Use shared database types and connection helpers from git-pkgs

Import Package and Version types from the git-pkgs database package instead of defining them locally. Both projects now share the same type definitions, keeping the packages and versions tables in sync. Delegate SQLite connection setup to the shared Open function so pragma settings (WAL, busy timeout, connection limit) stay aligned.
2026-09-16 15:52:05 -04:00 · 2026-03-04 19:21:42 +00:00
194 changed files with 3478 additions and 41454 deletions
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@ -8,14 +8,6 @@ updates:
    cooldown:
      default-days: 7
  - package-ecosystem: docker
    directory: /
    schedule:
      interval: weekly
    open-pull-requests-limit: 5
    cooldown:
      default-days: 7
  - package-ecosystem: github-actions
    directory: /
    schedule:
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -13,17 +13,18 @@ jobs:
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        go-version: ['1.25']
    runs-on: ${{ matrix.os }}
    steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
      - name: Set up Go
-        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
        with:
-          go-version-file: go.mod
+          go-version: ${{ matrix.go-version }}
      - name: Build
        run: go build -v ./...
@ -34,42 +35,14 @@ jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
      - name: Set up Go
-        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
        with:
-          go-version-file: go.mod
+          go-version: '1.25'
      - name: golangci-lint
        run: go tool golangci-lint run ./...
  helm:
    name: Helm chart
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - uses: azure/setup-helm@9bc31f4ebc9c6b171d7bfbaa5d006ae7abdb4310 # v5.0.1
        with:
          version: v3.18.6
      - name: Lint chart
        run: helm lint deploy/charts/proxy
      - name: Render chart variants
        run: |
          set -euo pipefail
          helm template proxy deploy/charts/proxy >/dev/null
          helm template proxy deploy/charts/proxy \
            --set persistence.enabled=false \
            --set config.existingConfigMap=proxy-config \
            --set ingress.enabled=true \
            --set 'ingress.hosts[0].host=proxy.example.com' \
            --set 'ingress.hosts[0].paths[0].path=/' \
            --set 'ingress.hosts[0].paths[0].pathType=Prefix' \
            >/dev/null
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@ -1,161 +0,0 @@
 name: Publish Docker image
 on:
  workflow_dispatch:
  push:
    tags:
      - "v*"
 permissions: {}
 concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
  push_to_registry:
    name: Push Docker image to GHCR
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
      id-token: write
    steps:
      - name: Check out the repo
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
        with:
          persist-credentials: false
      - name: Set up QEMU
        uses: docker/setup-qemu-action@1f40c72289eff860ee54a304f1438e3cff362e0a # v4.3.0
        with:
          platforms: linux/amd64,linux/arm64
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
      - name: Log in to the Container registry
        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302
        with:
          images: ghcr.io/${{ github.repository }}
      - uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
      - name: Build and push Docker image
        id: build
        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          provenance: mode=max
          sbom: true
      - name: Sign image by digest
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          IMAGE: ghcr.io/${{ github.repository }}
        run: |
          set -euo pipefail
          [[ "$DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]]
          cosign sign --yes "${IMAGE}@${DIGEST}"
      - name: Verify BuildKit attestations and extract SPDX predicates
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          IMAGE: ghcr.io/${{ github.repository }}
        run: |
          set -euo pipefail
          reference="${IMAGE}@${DIGEST}"
          docker buildx imagetools inspect "$reference" --format '{{ json .Provenance }}' > provenance.json
          docker buildx imagetools inspect "$reference" --format '{{ json .SBOM }}' > sbom.json
          for platform in linux/amd64 linux/arm64; do
            jq -e --arg p "$platform" '.[$p].SLSA | type == "object" and length > 0' \
              provenance.json >/dev/null
            jq -e --arg p "$platform" '.[$p].SPDX' sbom.json > "sbom-${platform//\//-}.spdx.json"
          done
      - name: Attest platform SBOMs by digest
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          IMAGE: ghcr.io/${{ github.repository }}
        run: |
          set -euo pipefail
          [[ "$DIGEST" =~ ^sha256:[0-9a-f]{64}$ ]]
          reference="${IMAGE}@${DIGEST}"
          for predicate in sbom-linux-amd64.spdx.json sbom-linux-arm64.spdx.json; do
            cosign attest --yes --type spdxjson --predicate "$predicate" "$reference"
          done
  publish_chart:
    name: Push Helm chart to GHCR
    if: github.ref_type == 'tag'
    needs: push_to_registry
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Check out the repo
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1
        with:
          persist-credentials: false
          ref: ${{ github.sha }}
      - uses: azure/setup-helm@9bc31f4ebc9c6b171d7bfbaa5d006ae7abdb4310 # v5.0.1
        with:
          version: v3.18.6
      - name: Validate and normalize release version
        id: version
        env:
          TAG: ${{ github.ref_name }}
        run: |
          set -euo pipefail
          semver='^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-((0|[1-9][0-9]*|[0-9]*[A-Za-z-][0-9A-Za-z-]*)(\.(0|[1-9][0-9]*|[0-9]*[A-Za-z-][0-9A-Za-z-]*))*))?$'
          [[ "$TAG" =~ $semver ]] || {
            echo "Tag must be strict SemVer of the form vMAJOR.MINOR.PATCH[-PRERELEASE]: $TAG" >&2
            exit 1
          }
          version="${TAG#v}"
          [[ "$version" != "0.0.0" ]] || {
            echo "0.0.0 is a development placeholder and must not be published" >&2
            exit 1
          }
          echo "version=$version" >> "$GITHUB_OUTPUT"
      - name: Log in to GHCR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: printf '%s' "$GH_TOKEN" | helm registry login ghcr.io --username "$GITHUB_ACTOR" --password-stdin
      - name: Lint and package chart
        env:
          VERSION: ${{ steps.version.outputs.version }}
        run: |
          set -euo pipefail
          helm lint deploy/charts/proxy
          mkdir -p build
          helm package \
            --destination build \
            --version "$VERSION" \
            --app-version "$VERSION" \
            deploy/charts/proxy
          metadata="$(helm show chart "build/proxy-${VERSION}.tgz")"
          [[ "$(awk '$1 == "version:" {print $2}' <<<"$metadata")" == "$VERSION" ]]
          [[ "$(awk '$1 == "appVersion:" {gsub(/\"/, "", $2); print $2}' <<<"$metadata")" == "$VERSION" ]]
      - name: Push chart
        env:
          VERSION: ${{ steps.version.outputs.version }}
        run: helm push "build/proxy-${VERSION}.tgz" oci://ghcr.io/git-pkgs/charts
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@ -7,27 +7,24 @@ on:
 permissions:
  contents: write
  id-token: write
 jobs:
  release:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
          persist-credentials: false
      - uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
      - name: Set up Go
-        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
+        uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
        with:
          go-version-file: go.mod
          cache: false
-      - uses: goreleaser/goreleaser-action@f06c13b6b1a9625abc9e6e439d9c05a8f2190e94 # v7.2.3
+      - uses: goreleaser/goreleaser-action@ec59f474b9834571250b370d4735c50f8e2d1e29 # v7.0.0
        with:
          version: "~> v2"
          args: release --clean
--- a/.github/workflows/swagger.yml
+++ b/.github/workflows/swagger.yml
@ -1,36 +0,0 @@
 name: Swagger
 on:
  pull_request:
    branches: [main]
  push:
    branches: [main]
 permissions: {}
 jobs:
  swagger:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Set up Go
        uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
        with:
          go-version-file: go.mod
      - name: Install swag
        run: go install github.com/swaggo/swag/cmd/swag@latest
      - name: Generate swagger
        run: go generate ./internal/server
      - name: Verify no changes
        run: |
          if [ -n "$(git status --porcelain)" ]; then
            echo "Swagger docs are out of date. Run: go generate ./internal/server" >&2
            git status --porcelain
            exit 1
          fi
--- a/.github/workflows/zizmor.yml
+++ b/.github/workflows/zizmor.yml
@ -21,9 +21,9 @@ jobs:
      security-events: write
    steps:
      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
      - name: Run zizmor
-        uses: zizmorcore/zizmor-action@70fb788f84895a7701f5643d103d587e460b5c99 # v0.6.3
+        uses: zizmorcore/zizmor-action@0dce2577a4760a2749d8cfb7a84b7d5585ebcb7d # v0.5.0
--- a/.gitignore
+++ b/.gitignore
@ -4,7 +4,7 @@
 *.dll
 *.so
 *.dylib
-/proxy
+proxy
 # Test binary, built with `go test -c`
 *.test
@ -14,8 +14,8 @@
 coverage.html
 coverage.txt
-# Go vendor directory (repo root only; embedded UI vendor dirs are tracked)
+# Dependency directories
-/vendor/
+vendor/
 # Go workspace file
 go.work
@ -43,4 +43,4 @@ cache/*
 # Debug files
 __debug_bin
-debug
+debug
--- a/.golangci.yml
+++ b/.golangci.yml
@ -1,28 +0,0 @@
 version: "2"
 linters:
  enable:
    - gocritic
    - gocognit
    - gocyclo
    - maintidx
    - dupl
    - mnd
    - unparam
    - ireturn
    - goconst
    - errcheck
  settings:
    goconst:
      min-len: 4
      min-occurrences: 5
      ignore-tests: true
      ignore-string-values:
        - "^[a-z]+$"
  exclusions:
    rules:
      - path: _test\.go
        linters:
          - goconst
          - dupl
          - mnd
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@ -34,17 +34,6 @@ archives:
 checksum:
  name_template: "checksums.txt"
 signs:
  - cmd: cosign
    signature: "${artifact}.cosign.bundle"
    args:
      - sign-blob
      - "--bundle=${signature}"
      - "${artifact}"
      - "--yes"
    artifacts: checksum
    output: true
 snapshot:
  version_template: "{{ incpatch .Version }}-next"
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -39,7 +39,7 @@ proxy/
 │   │   └── queries.go       # CRUD operations
 │   ├── storage/             # Artifact file storage
 │   │   ├── storage.go       # Storage interface
-│   │   └── blob.go          # gocloud.dev/blob backends (file, S3, Azure)
+│   │   └── filesystem.go    # Local filesystem impl
 │   ├── upstream/            # Upstream registry clients
 │   │   ├── fetcher.go       # HTTP artifact fetching
 │   │   └── resolver.go      # Download URL resolution
@ -72,7 +72,7 @@ Key types:
 ### `internal/storage`
-Artifact file storage abstraction backed by `gocloud.dev/blob`. Supports local filesystem (`file://`), S3 (`s3://`), and Azure (`azblob://`) URLs.
+Artifact file storage abstraction. Currently implements local filesystem storage. Designed to allow future backends (S3, GCS).
 Interface:
 ```go
--- a/9
+++ b/9
@ -1,4 +1,4 @@
-FROM --platform=$BUILDPLATFORM golang:1.26.7-alpine AS builder
+FROM golang:1.24-alpine AS builder
 WORKDIR /src
@ -12,11 +12,10 @@ RUN go mod download
 # Copy source code
 COPY . .
-# Build the binary for the target platform
+# Build the binary
-ARG TARGETARCH
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /proxy ./cmd/proxy
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -ldflags="-s -w" -o /proxy ./cmd/proxy
-FROM alpine:3.24.1
+FROM alpine:3.21
 RUN apk add --no-cache ca-certificates
--- a/232
+++ b/232
@ -1,232 +0,0 @@
 GNU GENERAL PUBLIC LICENSE
 Version 3, 29 June 2007
 Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
 Preamble
 The GNU General Public License is a free, copyleft license for software and other kinds of works.
 The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
 When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
 To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.
 For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
 Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.
 For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.
 Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.
 Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.
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 13. Use with the GNU Affero General Public License.
 Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
 14. Revised Versions of this License.
 The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
 Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
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 17. Interpretation of Sections 15 and 16.
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 END OF TERMS AND CONDITIONS
 How to Apply These Terms to Your New Programs
 If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
 To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
     <one line to give the program's name and a brief idea of what it does.>
     Copyright (C) <year>  <name of author>
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     You should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
 If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
     <program>  Copyright (C) <year>  <name of author>
     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
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 The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.
--- a/README.md
+++ b/README.md
@ -2,101 +2,33 @@
 A caching proxy for package registries. Speeds up package downloads by caching artifacts locally, reducing bandwidth usage and improving reliability.
 ## Version Cooldown
 Most supply chain attacks rely on speed: a malicious version gets published and consumed by automated pipelines within minutes, before anyone notices. The cooldown feature adds a quarantine period to newly published versions. When enabled, the proxy strips versions from metadata responses until they've aged past a configurable threshold.
 ```yaml
 cooldown:
  default: "3d"              # hide versions published less than 3 days ago
  ecosystems:
    npm: "7d"                # npm gets a longer window
    cargo: "0"               # disable for cargo
  packages:
    "pkg:npm/lodash": "0"    # exempt trusted packages
 ```
 A 3-day cooldown means that when `lodash` publishes version `4.18.0`, your builds keep using `4.17.21` until 3 days have passed. If the new release turns out to be compromised, you were never exposed.
 Resolution order: package override, then ecosystem override, then global default. This lets you set a conservative default and carve out exceptions for packages where you need faster updates. See [docs/configuration.md](docs/configuration.md) for the full config reference.
 ## Artifact Scanning
 Cooldown only looks at a version's publish timestamp — it never inspects the actual bytes. Artifact scanning closes that gap: when enabled, every artifact is staged into storage and scanned by one or more external services (trivy, ClamAV, Wiz, or anything else that speaks a small HTTP/JSON contract) before it's committed to the cache and served to clients.
 ```yaml
 scanning:
  enabled: true
  signing_key: ${PROXY_SCANNING_SIGNING_KEY}
  scanners:
    - name: clamav
      url: http://clamav-adapter:8080/scan
      mode: block             # a block verdict deletes the artifact and returns 403
    - name: trivy
      url: http://trivy-adapter:8081/scan
      mode: monitor            # findings are logged, never gate caching
      ecosystems: [npm, pypi]
 ```
 The proxy never uploads artifact bytes to a scanner. Each scanner is notified with package metadata plus a short-lived signed URL; the scanner pulls the bytes itself from the proxy's own storage. Scanners run concurrently, and the first `block`-mode scanner to report a verdict of not-allowed wins immediately, canceling the rest. See [docs/configuration.md](docs/configuration.md) for the full config reference and the scanner HTTP contract.
 ## Supported Registries
-| Registry | Language/Platform | Cooldown | Completed |
+| Registry | Language/Platform | URL Resolution | Handler | Completed |
-|----------|-------------------|:--------:|:---------:|
+|----------|-------------------|:--------------:|:-------:|:---------:|
-| npm | JavaScript | Yes | ✓ |
+| npm | JavaScript | Yes | Yes | ✓ |
-| Cargo | Rust | Yes | ✓ |
+| Cargo | Rust | Yes | Yes | ✓ |
-| RubyGems | Ruby | Yes | ✓ |
+| RubyGems | Ruby | Yes | Yes | ✓ |
-| Go proxy | Go | | ✓ |
+| Go proxy | Go | Yes | Yes | ✓ |
-| Hex | Elixir | Yes* | ✓ |
+| Hex | Elixir | Yes | Yes | ✓ |
-| pub.dev | Dart | Yes | ✓ |
+| pub.dev | Dart | Yes | Yes | ✓ |
-| PyPI | Python | Yes | ✓ |
+| PyPI | Python | Yes | Yes | ✓ |
-| Maven | Java | | ✓ |
+| Maven | Java | Yes | Yes | ✓ |
-| Gradle Build Cache | Java/Kotlin | | ✓ |
+| NuGet | .NET | Yes | Yes | ✓ |
-| NuGet | .NET | Yes | ✓ |
+| Composer | PHP | Yes | Yes | ✓ |
-| Composer | PHP | Yes | ✓ |
+| Conan | C/C++ | Yes | Yes | ✓ |
-| Conan | C/C++ | | ✓ |
+| Conda | Python/R | Yes | Yes | ✓ |
-| Conda | Python/R | Yes | ✓ |
+| CRAN | R | Yes | Yes | ✓ |
-| CRAN | R | | ✓ |
+| Container | Docker/OCI | Yes | Yes | ✓ |
-| Julia | Julia | | ✓ |
+| Debian | Debian/Ubuntu | Yes | Yes | ✓ |
-| Swift | Swift | | ✓ |
+| RPM | RHEL/Fedora | Yes | Yes | ✓ |
-| Container | Docker/OCI | | ✓ |
+| Alpine | Alpine Linux | No | No | ✗ |
-| Homebrew | macOS/Linux | | ✓ |
+| Arch | Arch Linux | No | No | ✗ |
-| Debian | Debian/Ubuntu | | ✓ |
+| Chef | Chef | No | No | ✗ |
-| RPM | RHEL/Fedora | | ✓ |
+| Generic | Any | No | No | ✗ |
-| Alpine | Alpine Linux | | ✓ |
+| Helm | Kubernetes | No | No | ✗ |
-| Arch | Arch Linux | | ✗ |
+| Swift | Swift | No | No | ✗ |
-| Chef | Chef | | ✗ |
+| Vagrant | Vagrant | No | No | ✗ |
 | Generic | Any | | ✓ |
 | Helm | Kubernetes | | ✓ |
 | Vagrant | Vagrant | | ✗ |
 Cooldown requires publish timestamps in metadata. Registries without a "Yes" in the cooldown column either don't expose timestamps or haven't been wired up yet.
 \* Hex cooldown requires disabling registry signature verification (`HEX_NO_VERIFY_REPO_ORIGIN=1`) since the proxy re-encodes the protobuf payload.
 ## Install
 ```bash
 brew install git-pkgs/git-pkgs/proxy
 ```
 Or download a binary from the [releases page](https://github.com/git-pkgs/proxy/releases).
 ### Helm
 Install the chart from GHCR, setting the public URL that package-manager clients
 will use to reach the proxy:
 ```bash
 helm install proxy oci://ghcr.io/git-pkgs/charts/proxy \
  --set config.data.base_url=https://proxy.example.com
 ```
 The default chart deploys one replica backed by a 10 GiB persistent volume,
 using SQLite and filesystem artifact storage under `/data`. See
 [`deploy/charts/proxy/values.yaml`](deploy/charts/proxy/values.yaml) for ingress,
 external database and object-storage configuration options.
 ## Quick Start
@ -113,25 +45,6 @@ go build -o proxy ./cmd/proxy
 The proxy is now running. Configure your package managers to use it.
 ## OpenAPI (Swagger)
 This repo uses swaggo to generate an OpenAPI spec from annotated handlers.
 Generate the spec:
 ```bash
 go install github.com/swaggo/swag/cmd/swag@latest
 go generate ./internal/server
 ```
 Generated files are written to `docs/swagger/`.
 When the proxy is running, fetch the live spec from:
 - `http://localhost:8080/openapi.json`
 Or replace `http://localhost:8080` with your configured base URL. This link is also shown on the dashboard.
 ## Configuring Package Managers
 ### npm
@ -193,29 +106,6 @@ export GOPROXY=http://localhost:8080/go,direct
 Or in your shell profile for persistence.
 ### Homebrew
 Point Homebrew's JSON API and artifact domain at the proxy:
 ```bash
 export HOMEBREW_API_DOMAIN=http://localhost:8080/homebrew
 export HOMEBREW_ARTIFACT_DOMAIN=http://localhost:8080
 ```
 The artifact domain proxies manifests and bottle blobs under `/v2/homebrew/core/`. GHCR routing is limited to that repository. Source archives, cask application downloads, custom tap artifacts, and legacy flat-file bottle mirrors use Homebrew's normal fallback URLs. Keep fallback enabled by leaving `HOMEBREW_ARTIFACT_DOMAIN_NO_FALLBACK` unset.
 Enable `cache_metadata` or set `PROXY_CACHE_METADATA=true` to retain Homebrew JSON API responses for offline fallback. Bottle blobs and their OCI manifests are cached without this setting.
 The upstreams default to `https://formulae.brew.sh/api` for the JSON API and `https://ghcr.io` for artifacts. To chain this proxy to another proxy, configure its Homebrew endpoints as the upstreams:
 ```yaml
 upstream:
  homebrew_api: "https://upstream-proxy.example.com/homebrew"
  homebrew_artifact: "https://upstream-proxy.example.com"
 ```
 The equivalent environment variables are `PROXY_UPSTREAM_HOMEBREW_API` and `PROXY_UPSTREAM_HOMEBREW_ARTIFACT`.
 ### Hex (Elixir)
 Configure in `~/.hex/hex.config`:
@ -269,34 +159,6 @@ Add to your `~/.m2/settings.xml`:
 </settings>
 ```
 The `/maven/` endpoint uses Maven Central as primary upstream and falls back to the Gradle Plugin Portal for Gradle plugin marker metadata and related artifacts when the primary upstream returns not found.
 For Gradle plugin resolution via the same proxy endpoint:
 ```kotlin
 pluginManagement {
  repositories {
    maven(url = "http://localhost:8080/maven/")
  }
 }
 ```
 ### Gradle HTTP Build Cache
 Configure in `settings.gradle(.kts)`:
 ```kotlin
 buildCache {
  local {
    enabled = false
  }
  remote<HttpBuildCache> {
    url = uri("http://localhost:8080/gradle/")
    push = true
  }
 }
 ```
 ### NuGet
 Configure in `nuget.config`:
@ -384,40 +246,6 @@ local({
 })
 ```
 ### Julia
 Set the Pkg server before starting Julia:
 ```bash
 export JULIA_PKG_SERVER=http://localhost:8080/julia
 ```
 Or inside a running session:
 ```julia
 ENV["JULIA_PKG_SERVER"] = "http://localhost:8080/julia"
 using Pkg; Pkg.update()
 ```
 ### Swift
 Configure the proxy as the default registry for the current Swift package:
 ```bash
 swift package-registry set --allow-insecure-http http://localhost:8080/swift
 ```
 Registry dependencies use their scoped package identifier in `Package.swift`:
 ```swift
 dependencies: [
    .package(id: "apple.swift-argument-parser", from: "1.2.0")
 ]
 ```
 The proxy supports dependency resolution and source downloads. Publishing with
 `swift package-registry publish` is not supported.
 ### Docker / Container Registry
 Configure Docker to use the proxy as a registry mirror in `/etc/docker/daemon.json`:
@ -440,39 +268,6 @@ Or pull images directly:
 docker pull localhost:8080/library/nginx:latest
 ```
 ### Helm
 Configure each HTTP chart repository with a name, then add the matching proxy
 URL to Helm:
 ```yaml
 upstream:
  helm:
    bitnami: "https://charts.bitnami.com/bitnami"
 ```
 ```bash
 helm repo add bitnami http://localhost:8080/helm/bitnami
 helm repo update
 helm pull bitnami/nginx
 ```
 The proxy caches `index.yaml` using the normal metadata-cache settings and
 caches chart archives after verifying their SHA-256 digest from the index.
 For charts stored in an OCI registry, configure a named OCI upstream and add
 the reserved `upstream/{name}` prefix to the chart reference:
 ```yaml
 upstream:
  oci:
    ghcr: "https://ghcr.io"
 ```
 ```bash
 helm pull oci://localhost:8080/upstream/ghcr/owner/charts/mychart --version 1.0.0 --plain-http
 ```
 ### Debian / APT
 Configure APT to use the proxy in `/etc/apt/sources.list.d/proxy.list`:
@ -487,13 +282,6 @@ Replace your existing sources.list entries, then:
 sudo apt update
 ```
 The upstream defaults to `http://deb.debian.org/debian`. To proxy a different APT repository (e.g. Ubuntu), set `upstream.debian` in the config file or `PROXY_UPSTREAM_DEBIAN` in the environment:
 ```yaml
 upstream:
  debian: "http://archive.ubuntu.com/ubuntu"
 ```
 ### RPM / Yum / DNF
 Configure yum/dnf to use the proxy in `/etc/yum.repos.d/proxy.repo`:
@ -513,76 +301,9 @@ sudo dnf clean all
 sudo dnf update
 ```
 ### Alpine / apk
 Point `/etc/apk/repositories` at the proxy. The default repository name
 `alpine` proxies the official mirror (`https://dl-cdn.alpinelinux.org/alpine`):
 ```
 http://localhost:8080/apk/alpine/v3.22/main
 http://localhost:8080/apk/alpine/v3.22/community
 ```
 Then:
 ```bash
 apk update
 ```
 Repository indexes (v2 `APKINDEX.tar.gz` and v3 `Packages.adb`), detached
 signatures, and packages are served byte-for-byte unchanged, so apk's normal
 signature verification keeps working. Indexes use the metadata cache
 (`metadata_ttl`, stale fallback); `.apk` packages are stored in the shared
 artifact cache and remain available when the upstream is unreachable.
 To proxy other mirrors or private repositories, configure named upstreams
 under `upstream.apk` (this replaces the built-in default; re-add `alpine` if
 you still want it):
 ```yaml
 upstream:
  apk:
    alpine: "https://dl-cdn.alpinelinux.org/alpine"
    private: "https://apk.example.com"
 ```
 ```
 http://localhost:8080/apk/private
 ```
 apk appends the architecture and index filename to each repository line
 itself.
 ### GitHub Releases / mise (aqua backend)
 Configure named generic upstreams:
 ```yaml
 upstream:
  generic:
    github: "https://github.com"
    github-api: "https://api.github.com"
 ```
 Then rewrite GitHub URLs in mise's settings (`~/.config/mise/config.toml`, mise ≥ 2025.9.3):
 ```toml
 [settings.url_replacements]
 "regex:^https://github\\.com/([^/]+)/([^/]+)/releases/download/(.+)" = "http://localhost:8080/generic/github/$1/$2/releases/download/$3"
 "regex:^https://api\\.github\\.com/(.*)" = "http://localhost:8080/generic/github-api/$1"
 ```
 Release assets are cached permanently after the first download and keep
 installing while GitHub is down. Tag lookups through `api.github.com` are
 cached for `metadata_ttl` and served stale during an outage or rate limit.
 Commit a `mise.lock` and install with `mise install --locked` so pinned
 installs need no API call at all. Add a bearer token for `https://api.github.com`
 under `upstream.auth` if the fleet exceeds GitHub's anonymous rate limit.
 ## Configuration
 The proxy can be configured via:
 1. Command line flags (highest priority)
 2. Environment variables
 3. Configuration file (YAML or JSON)
@ -590,18 +311,14 @@ The proxy can be configured via:
 ### Command Line Flags
 ```
-config string           Path to configuration file
+-config string      Path to configuration file
-listen string           Address to listen on (default ":8080")
+-listen string      Address to listen on (default ":8080")
-base-url string         Public URL of this proxy (default "http://localhost:8080")
+-base-url string    Public URL of this proxy (default "http://localhost:8080")
-storage-url string      Storage URL (file://, s3://, gs://, azblob://)
+-storage string     Path to artifact storage directory (default "./cache/artifacts")
-storage-path string     Path to artifact storage directory (deprecated, use -storage-url)
+-database string    Path to SQLite database file (default "./cache/proxy.db")
-database-driver string  Database driver: sqlite or postgres (default "sqlite")
+-log-level string   Log level: debug, info, warn, error (default "info")
-database-path string    Path to SQLite database file (default "./cache/proxy.db")
+-log-format string  Log format: text, json (default "text")
-database-url string     PostgreSQL connection URL
+-version            Print version and exit
 -log-level string        Log level: debug, info, warn, error (default "info")
 -log-format string       Log format: text, json (default "text")
 -access-log string       Path to the JSONL access log
 -version                 Print version and exit
 ```
 ### Environment Variables
@ -609,15 +326,10 @@ The proxy can be configured via:
 ```bash
 PROXY_LISTEN=:8080
 PROXY_BASE_URL=http://localhost:8080
-PROXY_UI_URL=http://localhost:8080  # Optional; defaults to PROXY_BASE_URL
+PROXY_STORAGE_PATH=./cache/artifacts
 PROXY_STORAGE_URL=file:///var/cache/proxy/artifacts
 PROXY_DATABASE_DRIVER=sqlite
 PROXY_DATABASE_PATH=./cache/proxy.db
 PROXY_DATABASE_URL=postgres://user:pass@localhost/proxy?sslmode=disable
 PROXY_LOG_LEVEL=info
 PROXY_LOG_FORMAT=text
 PROXY_ACCESS_LOG_PATH=/var/log/proxy/access.jsonl
 PROXY_UPSTREAM_SWIFT=https://tuist.dev/api/registry/swift
 ```
 ### Configuration File
@ -627,127 +339,28 @@ listen: ":8080"
 base_url: "http://localhost:8080"
 storage:
-  url: "file:///var/cache/proxy/artifacts"
+  path: "/var/cache/proxy/artifacts"
  max_size: "10GB"  # Optional: evict LRU when exceeded
 database:
  driver: "sqlite"
  path: "/var/lib/proxy/cache.db"
 log:
  level: "info"
  format: "text"
 access_log:
  path: "/var/log/proxy/access.jsonl"  # Optional JSONL activity log
 # Optional: override upstream URLs
 upstream:
  npm: "https://registry.npmjs.org"
  cargo: "https://index.crates.io"
  swift: "https://tuist.dev/api/registry/swift"
 # Optional: version cooldown (see above)
 cooldown:
  default: "3d"
 ```
 See the [configuration reference](docs/configuration.md#upstream-registries) for every upstream key, environment variable, and default URL.
 Run with config file:
 ```bash
 ./proxy -config /etc/proxy/config.yaml
 ```
 ### PostgreSQL
 SQLite is the default and works well for single-node deployments. For multi-node setups or if you prefer a managed database, switch to Postgres:
 ```yaml
 database:
  driver: "postgres"
  url: "postgres://user:password@localhost:5432/proxy?sslmode=disable"
 ```
 Or via environment variables:
 ```bash
 PROXY_DATABASE_DRIVER=postgres
 PROXY_DATABASE_URL=postgres://user:password@localhost:5432/proxy?sslmode=disable
 ```
 The proxy creates tables automatically on first run.
 ### S3 Storage
 The proxy can store cached artifacts in S3 or any S3-compatible service (MinIO, R2, etc.) instead of the local filesystem.
 ```yaml
 storage:
  url: "s3://my-bucket-name?region=us-east-1"
 ```
 For S3-compatible services like MinIO:
 ```yaml
 storage:
  url: "s3://my-bucket?endpoint=http://localhost:9000&disableSSL=true&s3ForcePathStyle=true"
 ```
 Set credentials via standard AWS environment variables (`AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, `AWS_REGION`).
 ### Google Cloud Storage
 The proxy can store cached artifacts in a GCS bucket using the `gs://` URL scheme.
 ```yaml
 storage:
  url: "gs://my-bucket-name"
 ```
 Authentication uses [Application Default Credentials](https://docs.cloud.google.com/docs/authentication/application-default-credentials), which means no credentials need to be embedded in the config or environment. Supported sources, in order:
 - **GKE Workload Identity** — bind the Kubernetes service account running the proxy to a Google service account that has `roles/storage.objectAdmin` on the bucket. The proxy will use the workload's token automatically.
 - **Attached service account** on GCE, Cloud Run, Cloud Functions, etc.
 - **`GOOGLE_APPLICATION_CREDENTIALS`** environment variable pointing at a service account JSON key file.
 - **`gcloud auth application-default login`** for local development.
 #### GKE Workload Identity setup
 ```bash
 # 1. Create a Google service account
 gcloud iam service-accounts create git-pkgs-proxy \
  --project=PROJECT_ID
 # 2. Grant it access to the bucket
 gsutil iam ch \
  serviceAccount:git-pkgs-proxy@PROJECT_ID.iam.gserviceaccount.com:objectAdmin \
  gs://my-bucket-name
 # 3. Bind the Kubernetes service account to it
 gcloud iam service-accounts add-iam-policy-binding \
  git-pkgs-proxy@PROJECT_ID.iam.gserviceaccount.com \
  --role=roles/iam.workloadIdentityUser \
  --member="serviceAccount:PROJECT_ID.svc.id.goog[NAMESPACE/KSA_NAME]"
 # 4. Annotate the Kubernetes service account
 kubectl annotate serviceaccount KSA_NAME \
  --namespace=NAMESPACE \
  iam.gke.io/gcp-service-account=git-pkgs-proxy@PROJECT_ID.iam.gserviceaccount.com
 ```
 #### Direct serve (signed URLs) with Workload Identity
 When `direct_serve: true` is enabled, the proxy issues HTTP 302 redirects to presigned GCS URLs. Workload Identity provides no private key, so the GCS backend calls the [IAM Credentials `signBlob` API](https://docs.cloud.google.com/iam/docs/reference/credentials/rest/v1/projects.serviceAccounts/signBlob). Grant the service account the token-creator role on itself:
 ```bash
 gcloud iam service-accounts add-iam-policy-binding \
  git-pkgs-proxy@PROJECT_ID.iam.gserviceaccount.com \
  --role=roles/iam.serviceAccountTokenCreator \
  --member="serviceAccount:git-pkgs-proxy@PROJECT_ID.iam.gserviceaccount.com"
 ```
 ## CLI Commands
 ### serve (default)
@ -759,49 +372,6 @@ proxy serve [flags]
 proxy [flags]  # same as 'proxy serve'
 ```
 ### mirror
 Pre-populate the cache from PURLs, SBOM files, or entire registries. Useful for ensuring offline availability or warming the cache before deployments.
 ```bash
 # Mirror specific package versions
 proxy mirror pkg:npm/lodash@4.17.21 pkg:cargo/serde@1.0.0
 # Mirror all versions of a package
 proxy mirror pkg:npm/lodash
 # Mirror from a CycloneDX or SPDX SBOM
 proxy mirror --sbom sbom.cdx.json
 # Preview what would be mirrored
 proxy mirror --dry-run pkg:npm/lodash
 # Control parallelism
 proxy mirror --concurrency 8 pkg:npm/lodash@4.17.21
 ```
 The mirror command accepts the same storage and database flags as `serve`. Already-cached artifacts are skipped.
 A mirror API is also available when the server is running:
 ```bash
 # Start a mirror job
 curl -X POST http://localhost:8080/api/mirror \
  -H "Content-Type: application/json" \
  -d '{"purls": ["pkg:npm/lodash@4.17.21"]}'
 # Start a mirror job from an inline CycloneDX or SPDX JSON SBOM
 curl -X POST http://localhost:8080/api/mirror \
  -H "Content-Type: application/json" \
  -d '{"sbom":{"bomFormat":"CycloneDX","components":[{"purl":"pkg:npm/lodash@4.17.21"}]}}'
 # Check job status
 curl http://localhost:8080/api/mirror/mirror-1
 # Cancel a running job
 curl -X DELETE http://localhost:8080/api/mirror/mirror-1
 ```
 ### stats
 Show cache statistics without running the server.
@ -814,10 +384,7 @@ proxy stats
 proxy stats -json
 # Custom database path
-proxy stats -database-path /var/lib/proxy/cache.db
+proxy stats -database /var/lib/proxy/cache.db
 # With PostgreSQL
 proxy stats -database-driver postgres -database-url postgres://user:pass@localhost/proxy
 # Show top 20 most popular packages
 proxy stats -popular 20
@ -855,10 +422,9 @@ Recently cached:
 | Endpoint | Description |
 |----------|-------------|
-| `GET /` | Dashboard (web UI) |
+| `GET /` | Welcome message and endpoint list |
-| `GET /health` | Health check and upstream circuit breaker state (JSON; HTTP 200 healthy, 503 unhealthy) |
+| `GET /health` | Health check (returns "ok" if healthy) |
 | `GET /stats` | Cache statistics (JSON) |
 | `GET /metrics` | Prometheus metrics |
 | `GET /npm/*` | npm registry protocol |
 | `GET /cargo/*` | Cargo sparse index protocol |
 | `GET /gem/*` | RubyGems protocol |
@ -872,25 +438,10 @@ Recently cached:
 | `GET /conan/*` | Conan C/C++ protocol |
 | `GET /conda/*` | Conda/Anaconda protocol |
 | `GET /cran/*` | CRAN (R) protocol |
 | `GET /julia/*` | Julia Pkg server protocol |
 | `GET /swift/*` | Swift Package Registry v1 protocol |
 | `GET /helm/{repository}/*` | HTTP Helm chart repository protocol |
 | `GET /homebrew/*` | Homebrew JSON API |
 | `GET /v2/*` | OCI/Docker registry protocol |
 | `GET /v2/homebrew/core/*` | Homebrew core bottle manifests and blobs from GHCR |
 | `GET /apk/{repository}/*` | Alpine APK repository protocol |
 | `GET /generic/{name}/*` | Generic HTTP download proxy (GitHub release assets, mise/aqua) |
 | `GET /debian/*` | Debian/APT repository protocol |
 | `GET /rpm/*` | RPM/Yum repository protocol |
 ### Mirror API
 | Endpoint | Description |
 |----------|-------------|
 | `POST /api/mirror` | Start a mirror job (JSON body with `purls` or an inline `sbom`) |
 | `GET /api/mirror/{id}` | Get job status and progress |
 | `DELETE /api/mirror/{id}` | Cancel a running job |
 ### Enrichment API
 The proxy provides REST endpoints for package metadata enrichment, vulnerability scanning, and outdated detection.
@ -1045,7 +596,7 @@ Response:
  "cached_artifacts": 142,
  "total_size_bytes": 523456789,
  "total_size": "499.2 MB",
-  "storage_url": "file:///path/to/cache/artifacts",
+  "storage_path": "./cache/artifacts",
  "database_path": "./cache/proxy.db"
 }
 ```
@ -1073,83 +624,6 @@ Response:
                    └─────────┘
 ```
 ## Web Interface
 The proxy serves a web UI under `/ui`. No separate frontend build is needed -- templates and assets are embedded in the binary. `GET /` redirects to `/ui/`. The UI is mounted under its own prefix so a reverse proxy can apply different access rules to it than to the package endpoints (for example, requiring auth for `PathPrefix(/ui)` while leaving `/npm`, `/pypi` etc. open to build machines).
 - **Dashboard** (`/ui/`) -- cache stats, popular packages, recently cached artifacts, and vulnerability overview.
 - **Install guide** (`/ui/install`) -- per-ecosystem configuration instructions, so you don't have to look them up here.
 - **Package browser** (`/ui/packages`) -- browse all cached packages with filtering by ecosystem and sorting by hits, size, name, or vulnerability count.
 - **Search** (`/ui/search?q=...`) -- search cached packages by name.
 - **Package detail** (`/ui/package/{ecosystem}/{name}`) -- metadata, license, vulnerabilities, and version list for a package. You can select two versions to compare.
 - **Version detail** (`/ui/package/{ecosystem}/{name}/{version}`) -- per-version metadata, integrity hash, artifact cache status, and hit counts.
 - **Source browser** (`/ui/package/{ecosystem}/{name}/{version}/browse`) -- browse files inside cached archives with syntax highlighting for text files and image previews.
 - **Version diff** (`/ui/package/{ecosystem}/{name}/compare/{v1}...{v2}`) -- side-by-side diff of two cached versions showing added, removed, and changed files.
 ## Monitoring
 The proxy exposes Prometheus metrics at `GET /metrics`. All metric names are prefixed with `proxy_`.
 | Metric | Type | Labels | Description |
 |--------|------|--------|-------------|
 | `proxy_requests_total` | counter | `ecosystem`, `status` | Proxy responses by package ecosystem and HTTP status |
 | `proxy_request_duration_seconds` | histogram | `ecosystem`, `status` | Proxy request duration |
 | `proxy_cache_hits_total` | counter | `ecosystem` | Cache hits |
 | `proxy_cache_misses_total` | counter | `ecosystem` | Cache misses |
 | `proxy_cache_size_bytes` | gauge | | Total size of cached artifacts |
 | `proxy_cached_artifacts_total` | gauge | | Number of cached artifacts |
 | `proxy_upstream_fetch_duration_seconds` | histogram | `ecosystem` | Time spent fetching from upstream |
 | `proxy_upstream_errors_total` | counter | `ecosystem`, `error_type` | Upstream fetch failures |
 | `proxy_storage_operation_duration_seconds` | histogram | `operation` | Storage read/write latency |
 | `proxy_storage_errors_total` | counter | `operation` | Storage read/write failures |
 | `proxy_active_requests` | gauge | | In-flight requests |
 | `proxy_health_probe_failures_total` | counter | `step` | Storage health probe failures by failing step (`write`, `size`, `read`, `verify`, `delete`). |
 | `proxy_circuit_breaker_state` | gauge | `registry` | Artifact-fetch circuit breaker state per upstream registry (0 closed, 2 open). Published once that registry's breaker has tripped. |
 | `proxy_circuit_breaker_trips_total` | counter | `registry` | Circuit breaker trips per upstream registry. |
 Cache size and artifact count are refreshed every 60 seconds. Circuit breaker state is read from the fetcher on each scrape of `/metrics` and each `/health` request, so `proxy_circuit_breaker_trips_total` counts the trips visible between those reads — a breaker that opens and recovers entirely between two scrapes is not counted. The remaining metrics update on each request.
 The breaker metrics carry one series per upstream host, but only for hosts whose breaker has tripped at least once since startup. A breaker is created per host the proxy fetches artifacts from, and for some ecosystems that host comes from upstream metadata rather than from configuration (composer takes it from a package's `dist.url`, helm from the chart URLs in `index.yaml`), so publishing every host would let upstream content grow the series count for the lifetime of the process. Once a host has tripped it keeps reporting, so a recovery still shows up as a transition to 0 rather than as a series that vanishes. `/health` is not a persistent time series and lists every breaker, tripped or not.
 The `registry` label is the host of the URL the artifact was fetched from. Because that URL can come from upstream metadata, it is not always one a host can be read off — a signed `dist.url` that fails to parse, for instance — and such a breaker is labelled `hostless-url-<digest>` instead, where the digest is keyed by a value drawn fresh at startup. Neither `/metrics` nor `/health` requires authentication, so a fetch URL is never published as a label or a key; the digest identifies the breaker for as long as the process runs without revealing the URL behind it or letting a chosen URL be matched against it.
 Alert on `proxy_circuit_breaker_state == 2` sustained for more than a few minutes: while a breaker is open, artifact downloads for that upstream fail with HTTP 502 on every cache miss, and only a single probe request per backoff interval reaches the upstream. Cached artifacts keep serving, and so does metadata for the same ecosystem (metadata does not go through the circuit breaker), so installs fail in a way that looks like a partial upstream outage.
 ### Health Check
 `/health` returns a structured JSON report of subsystem health. HTTP 200 if all checks pass; 503 if any fail.
 ```json
 {
  "status": "ok",
  "checks": {
    "database": {"status": "ok"},
    "storage":  {"status": "ok"}
  },
  "circuit_breakers": {
    "registry.npmjs.org": "closed",
    "static.crates.io":   "open"
  }
 }
 ```
 Failing checks include an `"error"` field. Storage failures also include a `"step"` field identifying which probe step failed (`write`, `size`, `read`, `verify`, `delete`). When the database check fails, the storage entry reports `{"status": "skipped"}` so the response always carries the same key set.
 `circuit_breakers` reports the state of each upstream's artifact-fetch circuit breaker (`"open"` or `"closed"`), keyed by upstream host — or by the `hostless-url-<digest>` placeholder described under [Monitoring](#monitoring) where the fetch URL has no host to read. The key is omitted until the proxy has fetched an artifact from at least one upstream, and a host appears only once a breaker has been created for it. Breakers trip after repeated upstream failures and retry the upstream after an exponential backoff. While one is open, artifact downloads for that host return HTTP 502 on a cache miss without contacting the upstream; already-cached artifacts are still served from storage, since the cache is checked before the fetcher. A breaker is reported as `"open"` throughout its backoff, including the half-open window in which it admits one probe request to test recovery. Breaker state is per process and in memory, so a restart clears it, but a restart is not needed for recovery: the backoff keeps retrying for as long as the breaker is open, so it closes on its own once the upstream serves again.
 An open breaker does **not** set `status` to `"error"` or change the HTTP status code: it reports a specific upstream refusing to serve, not this proxy being unfit to receive traffic, and failing the readiness probe over one unhealthy upstream would pull the pod out of rotation for every other ecosystem too. Use `proxy_circuit_breaker_state` for alerting on it.
 Storage probe results are cached for `health.storage_probe_interval` (default 30s) to bound the cost of probing remote backends. A probe holds an internal mutex for up to 10 seconds (the hardcoded per-probe timeout), so `/health` is intended as a Kubernetes **readiness** probe rather than a liveness probe — a slow S3 round-trip should pull the pod from rotation, not restart it.
 Scrape config for Prometheus:
 ```yaml
 scrape_configs:
  - job_name: git-pkgs-proxy
    static_configs:
      - targets: ["localhost:8080"]
 ```
 ## Production Deployment
 ### Systemd Service
@ -1181,25 +655,27 @@ sudo systemctl start proxy
 ### Docker
-A Dockerfile is included in the repo. Build and run:
+```dockerfile
 FROM golang:1.23-alpine AS build
 WORKDIR /app
 COPY . .
 RUN go build -o proxy ./cmd/proxy
 FROM alpine:latest
 RUN apk --no-cache add ca-certificates
 COPY --from=build /app/proxy /usr/local/bin/
 EXPOSE 8080
 VOLUME ["/data"]
 CMD ["proxy", "-storage", "/data/artifacts", "-database", "/data/proxy.db"]
 ```
 Build and run:
 ```bash
 docker build -t proxy .
 docker run -p 8080:8080 -v proxy-data:/data proxy
 ```
 With Postgres and S3:
 ```bash
 docker run -p 8080:8080 \
  -e PROXY_DATABASE_DRIVER=postgres \
  -e PROXY_DATABASE_URL=postgres://user:pass@db:5432/proxy \
  -e PROXY_STORAGE_URL=s3://my-bucket?region=us-east-1 \
  -e AWS_ACCESS_KEY_ID=... \
  -e AWS_SECRET_ACCESS_KEY=... \
  proxy
 ```
 ### Behind a Reverse Proxy
 When running behind nginx, Apache, or another reverse proxy, set `base_url` to your public URL:
@ -1208,47 +684,22 @@ When running behind nginx, Apache, or another reverse proxy, set `base_url` to y
 base_url: "https://proxy.example.com"
 ```
-If the UI is reached on a different hostname than the package endpoints — for example, the UI exposed publicly on a domain while build machines hit a Docker network alias — set `ui_base_url` separately. `base_url` is the URL package managers and metadata rewriting use; `ui_base_url` is the URL advertised to humans visiting the web UI (canonical/`og:url` tags and the install guide banner):
+nginx example:
 ```yaml
 base_url: "http://pkg-proxy:8080"        # internal alias for build machines
 ui_base_url: "https://proxy.example.com/ui"  # public UI URL
 ```
 When unset, `ui_base_url` defaults to `base_url`.
 > **Warning:** the proxy serves the UI and package endpoints on the same listener. Setting `ui_base_url` only changes what URL the UI advertises to humans; it does not stop package endpoints from being reachable on the same hostname and port. When fronting the proxy with a public reverse proxy, restrict the public route to `PathPrefix(/ui)` (or your proxy's equivalent), otherwise `/npm`, `/pypi`, and the other package endpoints stay exposed alongside the UI.
 nginx example, restricting the public host to the UI while leaving package endpoints reachable only on the internal listener:
 ```nginx
 server {
    listen 443 ssl;
    server_name proxy.example.com;
-    location /ui/ {
+    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_buffering off;
    }
    location / {
        return 404;
    }
 }
 ```
 Traefik example using `PathPrefix(/ui)` so the public router only matches UI traffic:
 ```yaml
 labels:
  traefik.enable: "true"
  traefik.http.services.pkg-proxy.loadbalancer.server.port: "8080"
  traefik.http.routers.pkg-proxy.rule: "Host(`proxy.example.com`) && PathPrefix(`/ui`)"
  traefik.http.routers.pkg-proxy.entrypoints: "websecure"
 ```
 ## Cache Management
 The proxy stores artifacts in the configured storage directory with this structure:
@ -1277,7 +728,7 @@ cache/artifacts/
            └── nginx-1.24.0-1.fc39.x86_64.rpm
 ```
-Cache metadata is stored in SQLite (default) or PostgreSQL. To clear a local cache:
+Cache metadata is stored in an SQLite database. To clear the cache:
 ```bash
 rm -rf ./cache/artifacts/*
@ -1289,8 +740,7 @@ The proxy will recreate the database on next start.
 ## Building from Source
 Requirements:
-
+- Go 1.23 or later
 - Go (the project version is declared in `go.mod`)
 ```bash
 git clone https://github.com/git-pkgs/proxy.git
--- a/cmd/proxy/main.go
+++ b/cmd/proxy/main.go
@ -1,10 +1,5 @@
 // Command proxy runs the git-pkgs package registry proxy server.
 //
 // @title git-pkgs proxy API
 // @version 0.1.0
 // @description HTTP API for package enrichment, vulnerability lookup, cache stats, and source browsing.
 // @BasePath /
 //
 // The proxy caches package artifacts from upstream registries (npm, cargo, etc.)
 // providing faster, more reliable access for development teams.
 //
@ -16,7 +11,6 @@
 //
 //	serve    Start the proxy server (default if no command given)
 //	stats    Show cache statistics
 //	mirror   Pre-populate cache from PURLs, SBOMs, or registries
 //
 // Serve Flags:
 //
@ -40,8 +34,6 @@
 //	      Log level: debug, info, warn, error (default "info")
 //	-log-format string
 //	      Log format: text, json (default "text")
 //	-access-log string
 //	      Path to the JSONL access log (disabled by default)
 //
 // Stats Flags:
 //
@ -74,14 +66,6 @@
 //	PROXY_DATABASE_URL     - PostgreSQL connection URL
 //	PROXY_LOG_LEVEL        - Log level
 //	PROXY_LOG_FORMAT       - Log format
 //	PROXY_ACCESS_LOG_PATH  - JSONL access log path
 //	PROXY_UPSTREAM_*       - Upstream URLs and network access controls
 //	PROXY_GRADLE_BUILD_CACHE_READ_ONLY       - Disable Gradle PUT uploads
 //	PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE - Max Gradle PUT request body size
 //	PROXY_GRADLE_BUILD_CACHE_MAX_AGE         - Gradle cache max age eviction
 //	PROXY_GRADLE_BUILD_CACHE_MAX_SIZE        - Gradle cache max total size
 //	PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL  - Gradle cache eviction sweep interval
 //	PROXY_HEALTH_STORAGE_PROBE_INTERVAL      - Storage health probe cache interval (default "30s")
 //
 // Example:
 //
@ -106,21 +90,14 @@ import (
 	"log/slog"
 	"os"
 	"os/signal"
 	"runtime/debug"
 	"strings"
 	"syscall"
 	"github.com/git-pkgs/proxy/internal/config"
 	"github.com/git-pkgs/proxy/internal/database"
 	"github.com/git-pkgs/proxy/internal/handler"
 	"github.com/git-pkgs/proxy/internal/mirror"
 	"github.com/git-pkgs/proxy/internal/server"
 	"github.com/git-pkgs/proxy/internal/storage"
 	"github.com/git-pkgs/registries/fetch"
 )
 const defaultTopN = 10
 var (
 	// Version is set at build time.
 	Version = "dev"
@ -129,15 +106,6 @@ var (
 	Commit = "unknown"
 )
 func init() {
 	if Version != "dev" {
 		return
 	}
 	if bi, ok := debug.ReadBuildInfo(); ok && bi.Main.Version != "" && bi.Main.Version != "(devel)" {
 		Version = bi.Main.Version
 	}
 }
 func main() {
 	if len(os.Args) > 1 {
 		switch os.Args[1] {
@ -149,10 +117,6 @@ func main() {
 			os.Args = append(os.Args[:1], os.Args[2:]...)
 			runStats()
 			return
 		case "mirror":
 			os.Args = append(os.Args[:1], os.Args[2:]...)
 			runMirror()
 			return
 		case "-version", "--version":
 			fmt.Printf("proxy %s (%s)\n", Version, Commit)
 			os.Exit(0)
@ -174,7 +138,6 @@ Usage: proxy [command] [flags]
 Commands:
  serve    Start the proxy server (default)
  stats    Show cache statistics
  mirror   Pre-populate cache from PURLs, SBOMs, or registries
 Run 'proxy <command> -help' for more information on a command.
@ -196,7 +159,6 @@ func runServe() {
 	databaseURL := fs.String("database-url", "", "PostgreSQL connection URL")
 	logLevel := fs.String("log-level", "", "Log level: debug, info, warn, error")
 	logFormat := fs.String("log-format", "", "Log format: text, json")
 	accessLogPath := fs.String("access-log", "", "Path to the JSONL access log")
 	version := fs.Bool("version", false, "Print version and exit")
 	fs.Usage = func() {
@ -214,39 +176,6 @@ func runServe() {
 		fmt.Fprintf(os.Stderr, "  PROXY_DATABASE_URL     PostgreSQL connection URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_LOG_LEVEL        Log level\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_LOG_FORMAT       Log format\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_ACCESS_LOG_PATH  JSONL access log path\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_ALLOW_PRIVATE_HOSTS  Comma-separated private upstream hosts\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_ALLOW_LOOPBACK       Permit loopback upstreams and redirects\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_NPM                  npm registry upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_CARGO                Cargo index upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_CARGO_DOWNLOAD       Cargo download upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_GEM                  RubyGems upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_GO                   Go module proxy upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_HEX                  Hex repository upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_HEX_API              Hex API upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_PUB                  pub registry upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_PYPI                 PyPI index and API upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_PYPI_DOWNLOAD        PyPI download upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_MAVEN                Maven repository upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL Gradle Plugin Portal upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_NUGET                NuGet API upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_NUGET_SEARCH         NuGet search upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_COMPOSER             Packagist API upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_COMPOSER_REPOSITORY  Packagist repository upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_CONAN                Conan registry upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_CONDA                Conda channel upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_CRAN                 CRAN mirror upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_JULIA                Julia package server upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_SWIFT                Swift Package Registry upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_OCI_DEFAULT          Default OCI registry upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_DEBIAN               Debian repository upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_UPSTREAM_RPM                  RPM repository upstream URL\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_READ_ONLY       Disable Gradle PUT uploads\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE Max Gradle PUT request body size\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_AGE         Gradle cache max age eviction\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_MAX_SIZE        Gradle cache max total size\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL  Gradle cache eviction sweep interval\n")
 		fmt.Fprintf(os.Stderr, "  PROXY_HEALTH_STORAGE_PROBE_INTERVAL      Storage health probe cache interval\n")
 	}
 	_ = fs.Parse(os.Args[1:])
@ -277,7 +206,7 @@ func runServe() {
 		cfg.Storage.URL = *storageURL
 	}
 	if *storagePath != "" {
-		cfg.Storage.Path = *storagePath //nolint:staticcheck // backwards compat
+		cfg.Storage.Path = *storagePath
 	}
 	if *databaseDriver != "" {
 		cfg.Database.Driver = *databaseDriver
@ -294,9 +223,6 @@ func runServe() {
 	if *logFormat != "" {
 		cfg.Log.Format = *logFormat
 	}
 	if *accessLogPath != "" {
 		cfg.AccessLog.Path = *accessLogPath
 	}
 	// Validate configuration
 	if err := cfg.Validate(); err != nil {
@ -308,10 +234,7 @@ func runServe() {
 	logger := setupLogger(cfg.Log.Level, cfg.Log.Format)
 	// Create and start server
-	srv, err := server.New(cfg, logger, server.BuildInfo{
+	srv, err := server.New(cfg, logger)
 		Version: Version,
 		Commit:  Commit,
 	})
 	if err != nil {
 		logger.Error("failed to create server", "error", err)
 		os.Exit(1)
@ -319,6 +242,7 @@ func runServe() {
 	// Handle shutdown signals
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 	go func() {
 		sigCh := make(chan os.Signal, 1)
@ -337,12 +261,10 @@ func runServe() {
 	// Wait for shutdown or error
 	select {
 	case <-ctx.Done():
 		cancel()
 		if err := srv.Shutdown(context.Background()); err != nil {
 			logger.Error("shutdown error", "error", err)
 		}
 	case err := <-errCh:
 		cancel()
 		if err != nil {
 			logger.Error("server error", "error", err)
 			os.Exit(1)
@ -356,8 +278,8 @@ func runStats() {
 	databasePath := fs.String("database-path", "./cache/proxy.db", "Path to SQLite database file")
 	databaseURL := fs.String("database-url", "", "PostgreSQL connection URL")
 	asJSON := fs.Bool("json", false, "Output as JSON")
-	popular := fs.Int("popular", defaultTopN, "Show top N most popular packages")
+	popular := fs.Int("popular", 10, "Show top N most popular packages")
-	recent := fs.Int("recent", defaultTopN, "Show N recently cached packages")
+	recent := fs.Int("recent", 10, "Show N recently cached packages")
 	fs.Usage = func() {
 		fmt.Fprintf(os.Stderr, "git-pkgs proxy - Show cache statistics\n\n")
@ -399,192 +321,36 @@ func runStats() {
 		db, err = database.Open(*databasePath)
 	}
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error opening database: %v\n", err)
 		os.Exit(1)
 	}
 	if err := printStats(db, *popular, *recent, *asJSON); err != nil {
 		fmt.Fprintf(os.Stderr, "%v\n", err)
 		os.Exit(1)
 	}
 }
 func runMirror() {
 	fs := flag.NewFlagSet("mirror", flag.ExitOnError)
 	configPath := fs.String("config", "", "Path to configuration file")
 	storageURL := fs.String("storage-url", "", "Storage URL (file:// or s3://)")
 	databaseDriver := fs.String("database-driver", "", "Database driver: sqlite or postgres")
 	databasePath := fs.String("database-path", "", "Path to SQLite database file")
 	databaseURL := fs.String("database-url", "", "PostgreSQL connection URL")
 	sbomPath := fs.String("sbom", "", "Path to CycloneDX or SPDX SBOM file")
 	concurrency := fs.Int("concurrency", 4, "Number of parallel downloads") //nolint:mnd // default concurrency
 	dryRun := fs.Bool("dry-run", false, "Show what would be mirrored without downloading")
 	fs.Usage = func() {
 		fmt.Fprintf(os.Stderr, "git-pkgs proxy - Pre-populate cache\n\n")
 		fmt.Fprintf(os.Stderr, "Usage: proxy mirror [flags] [purl...]\n\n")
 		fmt.Fprintf(os.Stderr, "Examples:\n")
 		fmt.Fprintf(os.Stderr, "  proxy mirror pkg:npm/lodash@4.17.21\n")
 		fmt.Fprintf(os.Stderr, "  proxy mirror --sbom sbom.cdx.json\n")
 		fmt.Fprintf(os.Stderr, "  proxy mirror pkg:npm/lodash  # all versions\n\n")
 		fmt.Fprintf(os.Stderr, "Flags:\n")
 		fs.PrintDefaults()
 	}
 	_ = fs.Parse(os.Args[1:])
 	purls := fs.Args()
 	// Determine source
 	var source mirror.Source
 	switch {
 	case *sbomPath != "":
 		data, err := os.ReadFile(*sbomPath)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "error reading SBOM %s: %v\n", *sbomPath, err)
 			os.Exit(1)
 		}
 		source = &mirror.SBOMSource{Data: data, Name: *sbomPath}
 	case len(purls) > 0:
 		source = &mirror.PURLSource{PURLs: purls}
 	default:
 		fmt.Fprintf(os.Stderr, "error: provide PURLs or --sbom\n")
 		fs.Usage()
 		os.Exit(1)
 	}
 	// Load config
 	cfg, err := loadConfig(*configPath)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error loading config: %v\n", err)
 		os.Exit(1)
 	}
 	cfg.LoadFromEnv()
 	if *storageURL != "" {
 		cfg.Storage.URL = *storageURL
 	}
 	if *databaseDriver != "" {
 		cfg.Database.Driver = *databaseDriver
 	}
 	if *databasePath != "" {
 		cfg.Database.Path = *databasePath
 	}
 	if *databaseURL != "" {
 		cfg.Database.URL = *databaseURL
 	}
 	if err := cfg.Validate(); err != nil {
 		fmt.Fprintf(os.Stderr, "invalid configuration: %v\n", err)
 		os.Exit(1)
 	}
 	logger := setupLogger("info", "text")
 	// Open database
 	var db *database.DB
 	switch cfg.Database.Driver {
 	case "postgres":
 		db, err = database.OpenPostgresOrCreate(cfg.Database.URL)
 	default:
 		db, err = database.OpenOrCreate(cfg.Database.Path)
 	}
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error opening database: %v\n", err)
 		os.Exit(1)
 	}
 	defer func() { _ = db.Close() }()
-	if err := db.MigrateSchema(); err != nil {
+	// Get stats
 		_ = db.Close()
 		fmt.Fprintf(os.Stderr, "error migrating schema: %v\n", err)
 		os.Exit(1) //nolint:gocritic // db closed above
 	}
 	// Open storage
 	sURL := cfg.Storage.URL
 	if sURL == "" {
 		sURL = "file://" + cfg.Storage.Path //nolint:staticcheck // backwards compat
 	}
 	store, err := storage.OpenBucket(context.Background(), sURL)
 	if err != nil {
 		_ = db.Close()
 		fmt.Fprintf(os.Stderr, "error opening storage: %v\n", err)
 		os.Exit(1) //nolint:gocritic // db closed above
 	}
 	// Build proxy (reuses same pipeline as serve)
 	fetcher := fetch.NewFetcher()
 	resolver := fetch.NewResolver()
 	proxy := handler.NewProxy(db, store, fetcher, resolver, logger)
 	proxy.CacheMetadata = true // mirror always caches metadata
 	proxy.MetadataTTL = cfg.ParseMetadataTTL()
 	proxy.MetadataMaxSize = cfg.ParseMetadataMaxSize()
 	m := mirror.New(proxy, db, store, logger, *concurrency)
 	ctx, cancel := context.WithCancel(context.Background())
 	go func() {
 		sigCh := make(chan os.Signal, 1)
 		signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
 		<-sigCh
 		cancel()
 	}()
 	if *dryRun {
 		items, err := m.RunDryRun(ctx, source)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "error: %v\n", err)
 			os.Exit(1)
 		}
 		fmt.Printf("Would mirror %d package versions:\n", len(items))
 		for _, item := range items {
 			fmt.Printf("  %s\n", item)
 		}
 		return
 	}
 	progress, err := m.Run(ctx, source)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 	fmt.Printf("Mirror complete: %d downloaded, %d skipped (cached), %d failed, %s total\n",
 		progress.Completed, progress.Skipped, progress.Failed, formatSize(progress.Bytes))
 	if len(progress.Errors) > 0 {
 		fmt.Fprintf(os.Stderr, "\nErrors:\n")
 		for _, e := range progress.Errors {
 			fmt.Fprintf(os.Stderr, "  %s/%s@%s: %s\n", e.Ecosystem, e.Name, e.Version, e.Error)
 		}
 	}
 }
 func printStats(db *database.DB, popular, recent int, asJSON bool) error {
 	defer func() { _ = db.Close() }()
 	stats, err := db.GetCacheStats()
 	if err != nil {
-		return fmt.Errorf("error getting stats: %w", err)
+		fmt.Fprintf(os.Stderr, "error getting stats: %v\n", err)
 		os.Exit(1)
 	}
-	popularPkgs, err := db.GetMostPopularPackages(popular)
+	popularPkgs, err := db.GetMostPopularPackages(*popular)
 	if err != nil {
-		return fmt.Errorf("error getting popular packages: %w", err)
+		fmt.Fprintf(os.Stderr, "error getting popular packages: %v\n", err)
 		os.Exit(1)
 	}
-	recentPkgs, err := db.GetRecentlyCachedPackages(recent)
+	recentPkgs, err := db.GetRecentlyCachedPackages(*recent)
 	if err != nil {
-		return fmt.Errorf("error getting recent packages: %w", err)
+		fmt.Fprintf(os.Stderr, "error getting recent packages: %v\n", err)
 		os.Exit(1)
 	}
-	if asJSON {
+	if *asJSON {
 		outputJSON(stats, popularPkgs, recentPkgs)
 	} else {
 		outputText(stats, popularPkgs, recentPkgs)
 	}
 	return nil
 }
 type jsonOutput struct {
--- a/cmd/proxy/main_test.go
+++ b/cmd/proxy/main_test.go
@ -1,58 +0,0 @@
 package main
 import (
 	"os"
 	"os/exec"
 	"strings"
 	"testing"
 )
 func TestServeHelpListsUpstreamEnvironmentVariables(t *testing.T) {
 	cmd := exec.Command(os.Args[0], "-test.run=^TestServeHelpProcess$")
 	cmd.Env = append(os.Environ(), "PROXY_TEST_SERVE_HELP=1")
 	output, err := cmd.CombinedOutput()
 	if err != nil {
 		t.Fatalf("serve help failed: %v\n%s", err, output)
 	}
 	variables := []string{
 		"PROXY_UPSTREAM_ALLOW_PRIVATE_HOSTS",
 		"PROXY_UPSTREAM_ALLOW_LOOPBACK",
 		"PROXY_UPSTREAM_NPM",
 		"PROXY_UPSTREAM_CARGO",
 		"PROXY_UPSTREAM_CARGO_DOWNLOAD",
 		"PROXY_UPSTREAM_GEM",
 		"PROXY_UPSTREAM_GO",
 		"PROXY_UPSTREAM_HEX",
 		"PROXY_UPSTREAM_HEX_API",
 		"PROXY_UPSTREAM_PUB",
 		"PROXY_UPSTREAM_PYPI",
 		"PROXY_UPSTREAM_PYPI_DOWNLOAD",
 		"PROXY_UPSTREAM_MAVEN",
 		"PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL",
 		"PROXY_UPSTREAM_NUGET",
 		"PROXY_UPSTREAM_NUGET_SEARCH",
 		"PROXY_UPSTREAM_COMPOSER",
 		"PROXY_UPSTREAM_COMPOSER_REPOSITORY",
 		"PROXY_UPSTREAM_CONAN",
 		"PROXY_UPSTREAM_CONDA",
 		"PROXY_UPSTREAM_CRAN",
 		"PROXY_UPSTREAM_JULIA",
 		"PROXY_UPSTREAM_OCI_DEFAULT",
 		"PROXY_UPSTREAM_DEBIAN",
 		"PROXY_UPSTREAM_RPM",
 	}
 	for _, variable := range variables {
 		if !strings.Contains(string(output), variable) {
 			t.Errorf("serve help omitted %s", variable)
 		}
 	}
 }
 func TestServeHelpProcess(*testing.T) {
 	if os.Getenv("PROXY_TEST_SERVE_HELP") != "1" {
 		return
 	}
 	os.Args = []string{"proxy", "serve", "-help"}
 	main()
 }
--- a/config.example.yaml
+++ b/config.example.yaml
@ -4,22 +4,10 @@
 # Server listen address
 listen: ":8080"
-# Public URL where package endpoints are reachable.
+# Public URL where this proxy is accessible
-# Used for rewriting package metadata URLs and shown in install guide snippets
+# Used for rewriting package metadata URLs
 # so users know what to point their package manager at.
 base_url: "http://localhost:8080"
 # Timeout for individual upstream HTTP requests made by protocol handlers
 # (metadata fetches, pass-through file requests). Uses Go duration syntax.
 # Set to "0" to disable the timeout. Default: "30s".
 # http_timeout: "30s"
 # Public URL where the web UI is reached. Defaults to base_url when unset.
 # Set this separately when the UI is served on a different hostname than the
 # package endpoints — for example, the UI on a public domain behind auth while
 # build machines hit a Docker network alias for the package endpoints.
 # ui_base_url: "https://proxy.example.com/ui"
 # Artifact storage configuration
 storage:
  # Storage backend URL
@ -27,20 +15,9 @@ storage:
  #   - file:///path/to/dir - Local filesystem (default)
  #   - s3://bucket-name - Amazon S3
  #   - s3://bucket?endpoint=http://localhost:9000 - S3-compatible (MinIO)
  #   - gs://bucket-name - Google Cloud Storage
  #   - azblob://container-name - Azure Blob Storage
  #
  # For S3, configure credentials via environment variables:
  #   AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION
  #
  # For GCS, authentication uses Application Default Credentials. On GKE with
  # Workload Identity, bind the Kubernetes service account to a Google service
  # account that has roles/storage.objectAdmin on the bucket. No extra config
  # is needed in this file. For local development, run:
  #   gcloud auth application-default login
  # If direct_serve is enabled, the service account also needs
  # roles/iam.serviceAccountTokenCreator on itself so the IAM Credentials
  # signBlob API can sign URLs without a private key.
  url: ""
  # Local filesystem path (used when url is empty)
@ -52,23 +29,6 @@ storage:
  # Empty or "0" means unlimited
  max_size: ""
  # Redirect cached artifact downloads to presigned storage URLs (HTTP 302)
  # instead of streaming through the proxy. Only effective for S3, GCS, and Azure.
  # Leave disabled if clients reach the proxy through an authenticating gateway,
  # since presigned URLs bypass it.
  direct_serve: false
  # How long presigned URLs remain valid (e.g. "5m", "1h"). Default: "15m".
  direct_serve_ttl: "15m"
  # Public base URL to substitute into presigned URLs. Set this when the
  # proxy reaches storage at an internal address (127.0.0.1, a Docker
  # service name) but clients must use a public hostname. Only scheme and
  # host are used; the signed path and query are preserved. For S3/MinIO
  # the reverse proxy at this address must forward requests with the
  # internal Host header or the SigV4 signature will not validate.
  # direct_serve_base_url: "https://minio.example.com"
 # Database configuration
 database:
  # Database driver: "sqlite" (default) or "postgres"
@ -89,24 +49,10 @@ log:
  # Log format: "text" or "json"
  format: "text"
-# JSONL access log. Leave path empty to disable it.
+# Upstream registry URLs and authentication
 access_log:
  path: ""
 # Upstream URLs for built-in routes and authentication
 upstream:
  # Hosts allowed to resolve to private, ULA, or CGNAT addresses
  allow_private_hosts: []
  # Permit upstream requests and redirects to loopback addresses
  allow_loopback: false
  # npm registry URL
  npm: "https://registry.npmjs.org"
  # Always request full npm packuments so served metadata carries publish
  # times ("time" map) even when cooldown is disabled. Needed by clients that
  # gate on publish age, e.g. Yarn's npmMinimalAgeGate. Default: false.
  # npm_full_metadata: true
  # Cargo sparse index URL
  cargo: "https://index.crates.io"
@ -114,109 +60,14 @@ upstream:
  # Cargo crate download URL
  cargo_download: "https://static.crates.io/crates"
  # RubyGems registry URL
  gem: "https://rubygems.org"
  # Go module proxy URL
  go: "https://proxy.golang.org"
  # Hex repository URL
  hex: "https://repo.hex.pm"
  # Hex API URL used for package timestamps
  hex_api: "https://hex.pm"
  # pub registry URL
  pub: "https://pub.dev"
  # PyPI index and API URL
  pypi: "https://pypi.org"
  # PyPI package download URL
  pypi_download: "https://files.pythonhosted.org"
  # Maven repository URL (used by /maven endpoint)
  maven: "https://repo1.maven.org/maven2"
  # Gradle Plugin Portal Maven URL (fallback for plugin marker artifacts)
  gradle_plugin_portal: "https://plugins.gradle.org/m2"
  # NuGet API URL
  nuget: "https://api.nuget.org"
  # NuGet search API URL
  nuget_search: "https://azuresearch-usnc.nuget.org"
  # Packagist API URL
  composer: "https://packagist.org"
  # Packagist repository URL
  composer_repository: "https://repo.packagist.org"
  # Conan registry URL
  conan: "https://center.conan.io"
  # Conda channel base URL
  conda: "https://conda.anaconda.org"
  # CRAN mirror URL
  cran: "https://cloud.r-project.org"
  # Julia package server URL
  julia: "https://pkg.julialang.org"
  # Swift Package Registry URL (used by /swift endpoint)
  swift: "https://tuist.dev/api/registry/swift"
  # Default OCI registry URL for unprefixed /v2 requests
  oci_default: "https://registry-1.docker.io"
  # Debian/APT repository URL (used by /debian endpoint)
  debian: "http://deb.debian.org/debian"
  # RPM repository URL (used by /rpm endpoint)
  rpm: "https://dl.fedoraproject.org/pub/fedora/linux"
  # Homebrew JSON API URL (used by /homebrew endpoint)
  homebrew_api: "https://formulae.brew.sh/api"
  # Homebrew artifact registry URL (used for /v2/homebrew/core requests)
  homebrew_artifact: "https://ghcr.io"
  # Named HTTP Helm chart repositories (used by /helm/{name}/)
  # helm:
  #   bitnami: "https://charts.bitnami.com/bitnami"
  # Named OCI registries. Use the upstream/{name}/ repository prefix, e.g.
  # oci://proxy.example.com/upstream/ghcr/owner/chart.
  # oci:
  #   ghcr: "https://ghcr.io"
  # Named Alpine APK repositories (used by /apk/{name}/).
  # Defaults to {"alpine": "https://dl-cdn.alpinelinux.org/alpine"} when empty;
  # configuring any entry replaces that default.
  # apk:
  #   alpine: "https://dl-cdn.alpinelinux.org/alpine"
  #   private: "https://apk.example.com"
  # Named generic HTTP upstreams (used by /generic/{name}/). The remaining
  # request path and query are appended to the upstream URL. GitHub release
  # assets ({owner}/{repo}/releases/download/{tag}/{asset}) are cached
  # immutably; other paths use the metadata cache with stale-on-error.
  # generic:
  #   github: "https://github.com"
  #   github-api: "https://api.github.com"
  # Authentication for upstream registries
-  # Keys are absolute URL scopes. Scheme, host, effective port, and path
+  # Keys are URL prefixes matched against request URLs.
  # segment boundaries must match; the longest matching scope wins.
  # Values can reference environment variables using ${VAR_NAME} syntax.
  #
  # Supported auth types:
  #   - bearer: Authorization header with Bearer token
  #   - basic: Authorization header with Basic auth (username:password)
  #   - header: Custom header name and value
  #   - ecr: AWS ECR auto-refreshing token via the AWS SDK credential chain
  auth:
    # Example: npm with bearer token
    # "https://registry.npmjs.org":
@ -239,87 +90,3 @@ upstream:
    #   type: header
    #   header_name: "X-Auth-Token"
    #   header_value: "${MAVEN_TOKEN}"
    # Example: private AWS ECR registry (12h tokens auto-refreshed via
    # ecr:GetAuthorizationToken; credentials come from the AWS SDK default
    # chain, so IRSA / instance profiles / AWS_* env vars all work; the region
    # is inferred from the private ECR hostname)
    # "https://123456789012.dkr.ecr.eu-west-1.amazonaws.com":
    #   type: ecr
 # Gradle HttpBuildCache configuration
 gradle:
  build_cache:
    # Set to true to disable PUT uploads (read-only cache mode)
    read_only: false
    # Maximum accepted Gradle cache upload body size
    # Required and must be > 0
    max_upload_size: "100MB"
    # Evict entries older than this age (set to "0" to disable age-based eviction)
    max_age: "168h"
    # Cap total Gradle cache size; oldest entries are deleted first
    # ("0" disables size-based eviction)
    # max_size: "20GB"
    # How often eviction runs when max_age or max_size is set
    sweep_interval: "10m"
 # Health endpoint configuration.
 health:
  # Minimum time between storage backend probes.
  # The /health endpoint runs a write/read/verify/delete round-trip
  # against the configured storage backend and caches the result for
  # this interval. Set to "0" to probe on every request.
  # Default: "30s".
  storage_probe_interval: "30s"
 # Version cooldown configuration
 # Hides package versions published too recently, giving the community time
 # to spot malicious releases before they're pulled into projects.
 # Supported durations: "7d" (days), "48h" (hours), "30m" (minutes), "0" (disabled)
 cooldown:
  # Global default cooldown for all ecosystems
  # default: "3d"
  # Per-ecosystem overrides
  # ecosystems:
  #   npm: "7d"
  #   cargo: "0"
  # Per-package overrides (keyed by PURL). Keys are normalized, so npm scopes
  # may use either @scope or the canonical %40scope form.
  # packages:
  #   "pkg:npm/lodash": "0"
  #   "pkg:npm/@babel/core": "14d"
 # Pre-cache artifact scanning. When enabled, every artifact is staged into
 # storage and scanned by the configured scanners before it is committed to
 # the cache and served to clients. Scanners never receive artifact bytes
 # directly — each notify call includes a short-lived signed URL that the
 # scanner fetches itself, so the proxy stays agnostic to trivy/ClamAV/Wiz/
 # any custom service. Scanners run concurrently; the first "block" verdict
 # wins and cancels the rest.
 # scanning:
 #   enabled: true
 #   fail_open: false
 #   timeout: 30s
 #
 #   # Authenticates pull requests to the internal scan-fetch route.
 #   # Required whenever enabled is true. Supports ${VAR_NAME} expansion.
 #   signing_key: ${PROXY_SCANNING_SIGNING_KEY}
 #
 #   # Address scanners use to reach this proxy to pull staged artifacts.
 #   # Defaults to base_url.
 #   # fetch_base_url: http://proxy.internal:8080
 #
 #   scanners:
 #     - name: clamav
 #       url: http://clamav-adapter:8080/scan
 #       mode: block
 #     - name: trivy
 #       url: http://trivy-adapter:8081/scan
 #       mode: monitor
 #       ecosystems: [npm, pypi]
--- a/deploy/charts/proxy/.helmignore
+++ b/deploy/charts/proxy/.helmignore
@ -1,6 +0,0 @@
 .DS_Store
 .git/
 .github/
 *.swp
 *.tmp
 *.tgz
--- a/deploy/charts/proxy/Chart.yaml
+++ b/deploy/charts/proxy/Chart.yaml
@ -1,11 +0,0 @@
 apiVersion: v2
 name: proxy
 description: A caching proxy for package registries
 type: application
 version: 0.0.0
 appVersion: "0.0.0"
 home: https://github.com/git-pkgs/proxy
 sources:
  - https://github.com/git-pkgs/proxy
 annotations:
  artifacthub.io/license: MIT
--- a/deploy/charts/proxy/templates/NOTES.txt
+++ b/deploy/charts/proxy/templates/NOTES.txt
@ -1,15 +0,0 @@
 git-pkgs proxy has been installed.
 The default base URL is intended for local port forwarding. Before exposing the
 proxy, set config.data.base_url to the URL used by package-manager clients.
 To access the proxy locally:
  kubectl -n {{ .Release.Namespace }} port-forward service/{{ include "proxy.fullname" . }} {{ .Values.service.port }}:{{ .Values.service.port }}
 Then visit http://localhost:{{ .Values.service.port }}/.
 {{- if not .Values.persistence.enabled }}
 WARNING: persistence is disabled. Cached artifacts and the default SQLite
 database will be lost when the pod is replaced.
 {{- end }}
--- a/deploy/charts/proxy/templates/_helpers.tpl
+++ b/deploy/charts/proxy/templates/_helpers.tpl
@ -1,46 +0,0 @@
 {{/* Expand the chart name. */}}
 {{- define "proxy.name" -}}
 {{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
 {{- end }}
 {{/* Create a release-specific, DNS-safe resource name. */}}
 {{- define "proxy.fullname" -}}
 {{- if .Values.fullnameOverride }}
 {{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
 {{- else }}
 {{- $name := include "proxy.name" . }}
 {{- if contains $name .Release.Name }}
 {{- .Release.Name | trunc 63 | trimSuffix "-" }}
 {{- else }}
 {{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
 {{- end }}
 {{- end }}
 {{- end }}
 {{- define "proxy.labels" -}}
 helm.sh/chart: {{ printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
 {{ include "proxy.selectorLabels" . }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{- end }}
 {{- define "proxy.selectorLabels" -}}
 app.kubernetes.io/name: {{ include "proxy.name" . }}
 app.kubernetes.io/instance: {{ .Release.Name }}
 {{- end }}
 {{- define "proxy.configMapName" -}}
 {{- default (include "proxy.fullname" .) .Values.config.existingConfigMap }}
 {{- end }}
 {{- define "proxy.claimName" -}}
 {{- default (include "proxy.fullname" .) .Values.persistence.existingClaim }}
 {{- end }}
 {{- define "proxy.image" -}}
 {{- if .Values.image.digest -}}
 {{- printf "%s@%s" .Values.image.repository .Values.image.digest -}}
 {{- else -}}
 {{- printf "%s:%s" .Values.image.repository (default .Chart.AppVersion .Values.image.tag) -}}
 {{- end -}}
 {{- end }}
--- a/deploy/charts/proxy/templates/configmap.yaml
+++ b/deploy/charts/proxy/templates/configmap.yaml
@ -1,12 +0,0 @@
 {{- if not .Values.config.existingConfigMap }}
 apiVersion: v1
 kind: ConfigMap
 metadata:
  name: {{ include "proxy.fullname" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "proxy.labels" . | nindent 4 }}
 data:
  {{ required "config.existingConfigMapKey is required" .Values.config.existingConfigMapKey }}: |
    {{- toYaml .Values.config.data | nindent 4 }}
 {{- end }}
--- a/deploy/charts/proxy/templates/deployment.yaml
+++ b/deploy/charts/proxy/templates/deployment.yaml
@ -1,102 +0,0 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
  name: {{ include "proxy.fullname" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "proxy.labels" . | nindent 4 }}
 spec:
  replicas: {{ .Values.replicaCount }}
  strategy:
    {{- toYaml .Values.deploymentStrategy | nindent 4 }}
  selector:
    matchLabels:
      {{- include "proxy.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      labels:
        {{- include "proxy.selectorLabels" . | nindent 8 }}
        {{- with .Values.podLabels }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
      annotations:
        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
        {{- with .Values.podAnnotations }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
    spec:
      automountServiceAccountToken: false
      terminationGracePeriodSeconds: {{ .Values.terminationGracePeriodSeconds }}
      securityContext:
        {{- toYaml .Values.podSecurityContext | nindent 8 }}
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      containers:
        - name: {{ .Chart.Name }}
          image: {{ include "proxy.image" . | quote }}
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          securityContext:
            {{- toYaml .Values.containerSecurityContext | nindent 12 }}
          args:
            - serve
            - -config
            - /etc/proxy/{{ .Values.config.existingConfigMapKey }}
          {{- with .Values.extraEnv }}
          env:
            {{- toYaml . | nindent 12 }}
          {{- end }}
          {{- with .Values.extraEnvFrom }}
          envFrom:
            {{- toYaml . | nindent 12 }}
          {{- end }}
          ports:
            - name: http
              containerPort: {{ .Values.service.containerPort }}
              protocol: TCP
          startupProbe:
            {{- toYaml .Values.startupProbe | nindent 12 }}
          readinessProbe:
            {{- toYaml .Values.readinessProbe | nindent 12 }}
          livenessProbe:
            {{- toYaml .Values.livenessProbe | nindent 12 }}
          resources:
            {{- toYaml .Values.resources | nindent 12 }}
          volumeMounts:
            - name: config
              mountPath: /etc/proxy/{{ .Values.config.existingConfigMapKey }}
              subPath: {{ .Values.config.existingConfigMapKey }}
              readOnly: true
            - name: data
              mountPath: {{ .Values.persistence.mountPath }}
      volumes:
        - name: config
          configMap:
            name: {{ include "proxy.configMapName" . }}
            items:
              - key: {{ required "config.existingConfigMapKey is required" .Values.config.existingConfigMapKey }}
                path: {{ .Values.config.existingConfigMapKey }}
        - name: data
          {{- if .Values.persistence.enabled }}
          persistentVolumeClaim:
            claimName: {{ include "proxy.claimName" . }}
          {{- else }}
          emptyDir: {}
          {{- end }}
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.topologySpreadConstraints }}
      topologySpreadConstraints:
        {{- toYaml . | nindent 8 }}
      {{- end }}
--- a/deploy/charts/proxy/templates/ingress.yaml
+++ b/deploy/charts/proxy/templates/ingress.yaml
@ -1,39 +0,0 @@
 {{- if .Values.ingress.enabled }}
 {{- if not .Values.ingress.hosts }}
 {{- fail "ingress.hosts must be set when ingress.enabled=true" }}
 {{- end }}
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
  name: {{ include "proxy.fullname" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "proxy.labels" . | nindent 4 }}
  {{- with .Values.ingress.annotations }}
  annotations:
    {{- toYaml . | nindent 4 }}
  {{- end }}
 spec:
  {{- with .Values.ingress.className }}
  ingressClassName: {{ . | quote }}
  {{- end }}
  {{- with .Values.ingress.tls }}
  tls:
    {{- toYaml . | nindent 4 }}
  {{- end }}
  rules:
    {{- range .Values.ingress.hosts }}
    - host: {{ .host | quote }}
      http:
        paths:
          {{- range .paths }}
          - path: {{ .path | quote }}
            pathType: {{ .pathType }}
            backend:
              service:
                name: {{ include "proxy.fullname" $ }}
                port:
                  number: {{ $.Values.service.port }}
          {{- end }}
    {{- end }}
 {{- end }}
--- a/deploy/charts/proxy/templates/pvc.yaml
+++ b/deploy/charts/proxy/templates/pvc.yaml
@ -1,22 +0,0 @@
 {{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
  name: {{ include "proxy.fullname" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "proxy.labels" . | nindent 4 }}
  {{- with .Values.persistence.annotations }}
  annotations:
    {{- toYaml . | nindent 4 }}
  {{- end }}
 spec:
  accessModes:
    {{- toYaml .Values.persistence.accessModes | nindent 4 }}
  {{- with .Values.persistence.storageClass }}
  storageClassName: {{ . | quote }}
  {{- end }}
  resources:
    requests:
      storage: {{ .Values.persistence.size }}
 {{- end }}
--- a/deploy/charts/proxy/templates/service.yaml
+++ b/deploy/charts/proxy/templates/service.yaml
@ -1,16 +0,0 @@
 apiVersion: v1
 kind: Service
 metadata:
  name: {{ include "proxy.fullname" . }}
  namespace: {{ .Release.Namespace }}
  labels:
    {{- include "proxy.labels" . | nindent 4 }}
 spec:
  type: {{ .Values.service.type }}
  ports:
    - name: http
      port: {{ .Values.service.port }}
      targetPort: http
      protocol: TCP
  selector:
    {{- include "proxy.selectorLabels" . | nindent 4 }}
--- a/deploy/charts/proxy/values.yaml
+++ b/deploy/charts/proxy/values.yaml
@ -1,138 +0,0 @@
 # More than one replica requires config.data.database on Postgres,
 # config.data.storage on object storage, deploymentStrategy: RollingUpdate,
 # and a PVC access mode other than ReadWriteOnce (or persistence disabled).
 replicaCount: 1
 nameOverride: ""
 fullnameOverride: ""
 image:
  repository: ghcr.io/git-pkgs/proxy
  # An empty tag uses the chart appVersion.
  tag: ""
  # When set, digest takes precedence over tag.
  digest: ""
  pullPolicy: IfNotPresent
 imagePullSecrets: []
 service:
  type: ClusterIP
  port: 8080
  # Keep this aligned with config.data.listen (or the listen address in an
  # existing ConfigMap).
  containerPort: 8080
 # The generated configuration is ignored when existingConfigMap is set.
 config:
  existingConfigMap: ""
  existingConfigMapKey: config.yaml
  data:
    listen: ":8080"
    # Set this to the URL package-manager clients use to reach the proxy.
    base_url: "http://localhost:8080"
    storage:
      url: "file:///data/artifacts"
    database:
      driver: sqlite
      path: "/data/proxy.db"
    log:
      level: info
      format: json
 # Environment variables override values from the configuration file. This is
 # also the recommended way to supply secret values such as database passwords
 # and object-storage credentials.
 extraEnv: []
 #  - name: PROXY_DATABASE_URL
 #    valueFrom:
 #      secretKeyRef:
 #        name: proxy-database
 #        key: url
 extraEnvFrom: []
 #  - secretRef:
 #      name: proxy-object-storage
 persistence:
  enabled: true
  # Keep this aligned with config.data.storage.url and config.data.database.path
  # (or the equivalent paths in an existing ConfigMap).
  mountPath: /data
  existingClaim: ""
  annotations: {}
  accessModes:
    - ReadWriteOnce
  size: 10Gi
  storageClass: ""
 deploymentStrategy:
  type: Recreate
 ingress:
  enabled: false
  className: ""
  annotations: {}
  hosts: []
  #  - host: proxy.example.com
  #    paths:
  #      - path: /
  #        pathType: Prefix
  tls: []
  #  - secretName: proxy-tls
  #    hosts:
  #      - proxy.example.com
 podAnnotations: {}
 podLabels: {}
 podSecurityContext:
  runAsNonRoot: true
  runAsUser: 1000
  runAsGroup: 1000
  fsGroup: 1000
  seccompProfile:
    type: RuntimeDefault
 containerSecurityContext:
  allowPrivilegeEscalation: false
  readOnlyRootFilesystem: true
  capabilities:
    drop:
      - ALL
 resources: {}
 #  requests:
 #    cpu: 100m
 #    memory: 128Mi
 #  limits:
 #    memory: 512Mi
 startupProbe:
  tcpSocket:
    port: http
  failureThreshold: 30
  periodSeconds: 2
 # /health checks both the database and storage backends and can take up to ten
 # seconds. It is intentionally a readiness check rather than a liveness check.
 readinessProbe:
  httpGet:
    path: /health
    port: http
  timeoutSeconds: 11
  periodSeconds: 15
  failureThreshold: 2
 livenessProbe:
  tcpSocket:
    port: http
  periodSeconds: 20
  failureThreshold: 3
 terminationGracePeriodSeconds: 30
 nodeSelector: {}
 tolerations: []
 affinity: {}
 topologySpreadConstraints: []
--- a/docs/architecture.md
+++ b/docs/architecture.md
@ -7,24 +7,29 @@ This document describes the internal architecture of the git-pkgs proxy.
 The proxy is a caching HTTP server that sits between package manager clients and upstream registries. It intercepts requests, checks a local cache, and either serves cached content or fetches from upstream.
 ```
-┌──────────────────────────────────────────────────────────────────┐
+┌─────────────────────────────────────────────────────────────────┐
-│                          HTTP Server                              │
+│                         HTTP Server                              │
-│  ┌──────────────────────────────────────────────────────────┐    │
+│  ┌─────────────────────────────────────────────────────────┐    │
-│  │                     Router (Chi)                          │    │
+│  │                    Router (ServeMux)                     │    │
-│  │  /npm/*     -> NPMHandler      /health  -> healthHandler  │    │
+│  │  /npm/*  -> NPMHandler                                   │    │
-│  │  /cargo/*   -> CargoHandler    /stats   -> statsHandler   │    │
+│  │  /cargo/* -> CargoHandler                                │    │
-│  │  /gem/*     -> GemHandler      /metrics -> prometheus     │    │
+│  │  /health -> healthHandler                                │    │
-│  │  ...17 ecosystems              /api/*   -> APIHandler     │    │
+│  │  /stats  -> statsHandler                                 │    │
-│  │                                /ui/*    -> Web UI         │    │
+│  └─────────────────────────────────────────────────────────┘    │
-│  └──────────────────────────────────────────────────────────┘    │
+│                              │                                   │
-│         │                    │                    │               │
+│                              ▼                                   │
-│         ▼                    ▼                    ▼               │
+│  ┌─────────────────────────────────────────────────────────┐    │
 │  │                         Proxy                            │    │
 │  │  - GetOrFetchArtifact()                                  │    │
 │  │  - Coordinates DB, Storage, Fetcher                      │    │
 │  └─────────────────────────────────────────────────────────┘    │
 │         │                    │                    │              │
 │         ▼                    ▼                    ▼              │
 │  ┌───────────┐       ┌─────────────┐      ┌─────────────┐       │
-│  │ Database  │       │   Storage   │      │   Upstream  │       │
+│  │  Database │       │   Storage   │      │   Upstream  │       │
-│  │ SQLite or │       │ Filesystem  │      │  Registries │       │
+│  │  (SQLite) │       │ (Filesystem)│      │  (Fetcher)  │       │
 │  │ Postgres  │       │  or S3      │      │  (Fetcher)  │       │
 │  └───────────┘       └─────────────┘      └─────────────┘       │
-└──────────────────────────────────────────────────────────────────┘
+└─────────────────────────────────────────────────────────────────┘
 ```
 ## Request Flow
@ -86,102 +91,29 @@ Metadata is not cached - always fetched fresh. This ensures clients see new vers
 ### `internal/database`
-SQLite or PostgreSQL database for cache metadata. SQLite uses `modernc.org/sqlite` (pure Go, no CGO). PostgreSQL uses `lib/pq`.
+SQLite database for cache metadata. Uses `modernc.org/sqlite` (pure Go, no CGO).
 The schema is compatible with [git-pkgs](https://github.com/git-pkgs) databases. The proxy adds the `artifacts` and `vulnerabilities` tables on top of the shared `packages` and `versions` tables, so both tools can point at the same database.
 **Tables:**
 ```sql
 packages (
-    id          INTEGER PRIMARY KEY,  -- SERIAL on Postgres
+    id, purl, ecosystem, name, namespace, latest_version,
-    purl        TEXT NOT NULL,        -- unique, e.g. pkg:npm/lodash
+    license, description, homepage, repository_url, upstream_url,
-    ecosystem   TEXT NOT NULL,
+    metadata_fetched_at, created_at, updated_at
    name        TEXT NOT NULL,
    latest_version  TEXT,
    license         TEXT,
    description     TEXT,
    homepage        TEXT,
    repository_url  TEXT,
    registry_url    TEXT,
    supplier_name   TEXT,
    supplier_type   TEXT,
    source          TEXT,
    enriched_at     DATETIME,
    vulns_synced_at DATETIME,
    created_at      DATETIME,
    updated_at      DATETIME
 )
 -- indexes: purl (unique), (ecosystem, name)
 versions (
-    id           INTEGER PRIMARY KEY,
+    id, purl, package_id, version, license, integrity,
-    purl         TEXT NOT NULL,       -- unique, e.g. pkg:npm/lodash@4.17.21
+    published_at, yanked, metadata_fetched_at, created_at, updated_at
    package_purl TEXT NOT NULL,       -- FK to packages.purl
    license      TEXT,
    published_at DATETIME,
    integrity    TEXT,                -- subresource integrity hash
    yanked       INTEGER DEFAULT 0,  -- BOOLEAN on Postgres
    source       TEXT,
    enriched_at  DATETIME,
    created_at   DATETIME,
    updated_at   DATETIME
 )
 -- indexes: purl (unique), package_purl
 artifacts (
-    id             INTEGER PRIMARY KEY,
+    id, version_id, filename, upstream_url, storage_path,
-    version_purl   TEXT NOT NULL,
+    content_hash, size, content_type, fetched_at,
-    filename       TEXT NOT NULL,
+    hit_count, last_accessed_at, created_at, updated_at
    upstream_url   TEXT NOT NULL,
    storage_path   TEXT,              -- null until cached
    content_hash   TEXT,              -- SHA-256
    size           INTEGER,           -- BIGINT on Postgres
    content_type   TEXT,
    fetched_at     DATETIME,
    hit_count      INTEGER DEFAULT 0, -- BIGINT on Postgres
    last_accessed_at DATETIME,
    created_at     DATETIME,
    updated_at     DATETIME
 )
 -- indexes: (version_purl, filename) unique, storage_path, last_accessed_at
 vulnerabilities (
    id            INTEGER PRIMARY KEY,
    vuln_id       TEXT NOT NULL,      -- e.g. CVE-2021-1234
    ecosystem     TEXT NOT NULL,
    package_name  TEXT NOT NULL,
    severity      TEXT,
    summary       TEXT,
    fixed_version TEXT,
    cvss_score    REAL,
    "references"  TEXT,               -- JSON array
    fetched_at    DATETIME,
    created_at    DATETIME,
    updated_at    DATETIME
 )
 -- indexes: (vuln_id, ecosystem, package_name) unique, (ecosystem, package_name)
 metadata_cache (
    id            INTEGER PRIMARY KEY,
    ecosystem     TEXT NOT NULL,
    name          TEXT NOT NULL,
    storage_path  TEXT NOT NULL,
    etag          TEXT,
    content_type  TEXT,
    content_encoding TEXT,           -- replayed on serve so signed bytes stay verbatim
    size          INTEGER,           -- BIGINT on Postgres
    fetched_at    DATETIME,
    created_at    DATETIME,
    updated_at    DATETIME
 )
 -- indexes: (ecosystem, name) unique
 ```
 On PostgreSQL, `INTEGER PRIMARY KEY` becomes `SERIAL`, `DATETIME` becomes `TIMESTAMP`, `INTEGER DEFAULT 0` booleans become `BOOLEAN DEFAULT FALSE`, and size/count columns use `BIGINT`.
 The `MigrateSchema()` function handles backward compatibility with older git-pkgs databases by running named migrations that add missing columns and tables. See [migrations.md](migrations.md) for how to add new schema changes.
 **Key operations:**
 - `GetPackageByPURL()` - Look up package by PURL
 - `GetVersionByPURL()` - Look up version by PURL
@ -189,7 +121,6 @@ The `MigrateSchema()` function handles backward compatibility with older git-pkg
 - `UpsertPackage/Version/Artifact()` - Insert or update records
 - `RecordArtifactHit()` - Increment hit counter, update access time
 - `GetLeastRecentlyUsedArtifacts()` - For cache eviction
 - `SearchPackages()` - Full-text search across cached packages
 ### `internal/storage`
@ -241,8 +172,6 @@ Fetches artifacts from upstream registries.
 - Exponential backoff retry on 429 (rate limit) and 5xx errors
 - Returns streaming reader (doesn't load into memory)
 - Configurable user-agent
 - Shares an authentication-aware transport with metadata requests so URL-scoped credentials apply consistently
 - Discovers and caches scoped OCI Bearer tokens from registry challenges
 **Resolver:**
 - Determines download URL for a package/version
@ -270,39 +199,14 @@ HTTP protocol handlers for each registry type.
 - `handleIndex()` - Proxy sparse index
 - `handleDownload()` - Serve cached crate
 **SwiftHandler:**
 - Proxies the Swift Package Registry v1 read endpoints
 - Rewrites release URLs and caches source archives
 ### `internal/server`
-HTTP server setup, web UI, and API handlers.
+HTTP server setup.
 - Creates and wires together all components
- Mounts protocol handlers at ecosystem-specific paths
+- Mounts handlers at appropriate paths
- Middleware: request ID, real IP, logging, panic recovery, active request tracking
+- Adds logging middleware
- Web UI under `/ui`: dashboard, package browser, source browser, version comparison
+- Health and stats endpoints
 - Templates are embedded in the binary via `//go:embed`
 - Enrichment API for package metadata, vulnerability scanning, and outdated detection
 - Health, stats, and Prometheus metrics endpoints. `/health` runs an active write → size-check → read → verify → delete probe against the storage backend and returns a structured JSON response (`HealthResponse`) with `"ok"` / `"error"` status per subsystem. Probe results are cached (default 30 s, configurable via `health.storage_probe_interval`) to avoid overwhelming remote backends. The response also carries a `circuit_breakers` map reporting each upstream's artifact-fetch breaker as `"open"` or `"closed"`, keyed by the host fetched from (or an opaque placeholder where the fetch URL has no host to read); the same state is published as the `proxy_circuit_breaker_state` gauge on each `/metrics` scrape. An open breaker leaves the overall status `"ok"` — it describes an upstream, not this proxy.
 ### `internal/metrics`
 Prometheus metrics for cache performance, upstream latency, storage operations, and active requests. See the Monitoring section of the README for the full metric list.
 ### Cooldown
 Version age filtering for supply chain attack mitigation, provided by [github.com/git-pkgs/cooldown](https://github.com/git-pkgs/cooldown). Configurable at global, ecosystem, and per-package levels. Supported by npm, PyPI, pub.dev, and Composer handlers.
 ### `internal/enrichment`
 Package metadata enrichment. Fetches license, description, homepage, repository URL, and vulnerability data from upstream registries. Powers the `/api/` endpoints and the web UI's package detail pages.
 ### `internal/mirror`
 Selective package mirroring for pre-populating the proxy cache. Supports multiple input sources: individual PURLs (versioned or unversioned), CycloneDX/SPDX SBOM files, and full registry enumeration. Uses a bounded worker pool backed by `errgroup` to download artifacts in parallel, reusing `handler.Proxy.GetOrFetchArtifact()` for the actual fetch-and-cache work.
 The package also provides a `MetadataCache` for storing raw upstream metadata blobs so the proxy can serve metadata responses offline. The `JobStore` manages async mirror jobs exposed via the `/api/mirror` endpoints.
 ### `internal/config`
@ -353,12 +257,10 @@ Eviction can be implemented as:
 - Ensures clients fetch artifacts through proxy
 - Alternative: Let clients fetch directly, miss cache opportunity
-**Why not cache metadata (by default)?**
+**Why not cache metadata?**
 - Simplicity - no invalidation logic needed
 - Fresh data - new versions visible immediately
 - Metadata is small, upstream fetch is fast
 - Set `cache_metadata: true` or use the mirror command to enable metadata caching for offline use via the `metadata_cache` table
 - OCI manifests and tag lists are exceptions: they are cached automatically so previously fetched images remain pullable and tag resolution works when the registry or token service is unavailable
 **Why stream artifacts?**
 - Memory efficient - don't load large files into RAM
--- a/docs/configuration.md
+++ b/docs/configuration.md
@ -17,8 +17,7 @@ See `config.example.yaml` in the repository root for a complete example.
 | Config | Environment | Flag | Default | Description |
 |--------|-------------|------|---------|-------------|
 | `listen` | `PROXY_LISTEN` | `-listen` | `:8080` | Address to listen on |
-| `base_url` | `PROXY_BASE_URL` | `-base-url` | `http://localhost:8080` | Public URL package managers use to reach this proxy |
+| `base_url` | `PROXY_BASE_URL` | `-base-url` | `http://localhost:8080` | Public URL for the proxy |
 | `ui_base_url` | `PROXY_UI_URL` | - | (defaults to `base_url`) | Public URL where the web UI is reached. Set separately when the UI lives behind a different hostname than package endpoints (e.g. public domain vs Docker network alias). Used for canonical/og:url tags and the install guide banner. The proxy still serves package endpoints on the same listener, so any reverse proxy fronting the UI publicly should restrict the public route to `PathPrefix(/ui)` to avoid exposing package endpoints. |
 ## Storage
@ -108,168 +107,20 @@ log:
 | `log.level` | `PROXY_LOG_LEVEL` | `-log-level` | `debug`, `info`, `warn`, `error` |
 | `log.format` | `PROXY_LOG_FORMAT` | `-log-format` | `text`, `json` |
 ## Access Log
 The optional access log records client requests and each HTTP exchange with an upstream registry. It is always written as JSONL, with one JSON object per line. Records for the same client request share a `request_id`.
 ```yaml
 access_log:
  path: "/var/log/proxy/access.jsonl"
 ```
 | Config | Environment | Flag | Description |
 |--------|-------------|------|-------------|
 | `access_log.path` | `PROXY_ACCESS_LOG_PATH` | `-access-log` | File to append JSONL records to; empty disables the log |
 The parent directory must exist and be writable when the proxy starts. A newly created log file is readable and writable only by the proxy process owner.
 A request that receives a rate limit response from an upstream can produce records like these:
 ```json
 {"time":"2026-08-16T12:00:00Z","event":"upstream","request_id":"host/example-000001","method":"GET","url":"https://registry.example/packages/example","status_code":429,"duration_ms":42}
 {"time":"2026-08-16T12:00:00Z","event":"request","request_id":"host/example-000001","method":"GET","path":"/npm/example","status_code":502,"duration_ms":43,"remote_addr":"192.0.2.10:41234"}
 ```
 Upstream retries and OCI authentication calls are separate `upstream` records, so the log preserves every status returned over the wire. Network failures have an `error` field and no `status_code`. URL credentials, query strings, and fragments are omitted from both upstream URLs and client paths.
 ## Upstream Registries
-Each upstream used by a built-in package route can be set in YAML or JSON under `upstream`, or with its matching environment variable. Existing installations keep the same public upstreams by default. Trailing slashes are ignored.
+Override default upstream registry URLs:
 | Config | Environment | Default |
 |--------|-------------|---------|
 | `upstream.allow_private_hosts` | `PROXY_UPSTREAM_ALLOW_PRIVATE_HOSTS` | `[]` |
 | `upstream.allow_loopback` | `PROXY_UPSTREAM_ALLOW_LOOPBACK` | `false` |
 | `upstream.npm` | `PROXY_UPSTREAM_NPM` | `https://registry.npmjs.org` |
 | `upstream.npm_full_metadata` | `PROXY_UPSTREAM_NPM_FULL_METADATA` | `false` |
 | `upstream.cargo` | `PROXY_UPSTREAM_CARGO` | `https://index.crates.io` |
 | `upstream.cargo_download` | `PROXY_UPSTREAM_CARGO_DOWNLOAD` | `https://static.crates.io/crates` |
 | `upstream.gem` | `PROXY_UPSTREAM_GEM` | `https://rubygems.org` |
 | `upstream.go` | `PROXY_UPSTREAM_GO` | `https://proxy.golang.org` |
 | `upstream.hex` | `PROXY_UPSTREAM_HEX` | `https://repo.hex.pm` |
 | `upstream.hex_api` | `PROXY_UPSTREAM_HEX_API` | `https://hex.pm` |
 | `upstream.pub` | `PROXY_UPSTREAM_PUB` | `https://pub.dev` |
 | `upstream.pypi` | `PROXY_UPSTREAM_PYPI` | `https://pypi.org` |
 | `upstream.pypi_download` | `PROXY_UPSTREAM_PYPI_DOWNLOAD` | `https://files.pythonhosted.org` |
 | `upstream.maven` | `PROXY_UPSTREAM_MAVEN` | `https://repo1.maven.org/maven2` |
 | `upstream.gradle_plugin_portal` | `PROXY_UPSTREAM_GRADLE_PLUGIN_PORTAL` | `https://plugins.gradle.org/m2` |
 | `upstream.nuget` | `PROXY_UPSTREAM_NUGET` | `https://api.nuget.org` |
 | `upstream.nuget_search` | `PROXY_UPSTREAM_NUGET_SEARCH` | `https://azuresearch-usnc.nuget.org` |
 | `upstream.composer` | `PROXY_UPSTREAM_COMPOSER` | `https://packagist.org` |
 | `upstream.composer_repository` | `PROXY_UPSTREAM_COMPOSER_REPOSITORY` | `https://repo.packagist.org` |
 | `upstream.conan` | `PROXY_UPSTREAM_CONAN` | `https://center.conan.io` |
 | `upstream.conda` | `PROXY_UPSTREAM_CONDA` | `https://conda.anaconda.org` |
 | `upstream.cran` | `PROXY_UPSTREAM_CRAN` | `https://cloud.r-project.org` |
 | `upstream.julia` | `PROXY_UPSTREAM_JULIA` | `https://pkg.julialang.org` |
 | `upstream.swift` | `PROXY_UPSTREAM_SWIFT` | `https://tuist.dev/api/registry/swift` |
 | `upstream.oci_default` | `PROXY_UPSTREAM_OCI_DEFAULT` | `https://registry-1.docker.io` |
 | `upstream.debian` | `PROXY_UPSTREAM_DEBIAN` | `http://deb.debian.org/debian` |
 | `upstream.rpm` | `PROXY_UPSTREAM_RPM` | `https://dl.fedoraproject.org/pub/fedora/linux` |
 | `upstream.homebrew_api` | `PROXY_UPSTREAM_HOMEBREW_API` | `https://formulae.brew.sh/api` |
 | `upstream.homebrew_artifact` | `PROXY_UPSTREAM_HOMEBREW_ARTIFACT` | `https://ghcr.io` |
 Private, ULA, CGNAT, and loopback addresses are rejected by default. Add each private upstream hostname or IP address to `upstream.allow_private_hosts`. The matching environment variable accepts a comma-separated list. Loopback upstreams also require `upstream.allow_loopback: true`. That setting permits upstream requests and redirects to reach any loopback address.
 ```yaml
 upstream:
-  allow_private_hosts:
+  npm: "https://registry.npmjs.org"
-    - "upstream-proxy.internal"
+  cargo: "https://index.crates.io"
-  pypi: "http://upstream-proxy.internal/pypi"
+  cargo_download: "https://static.crates.io/crates"
  pypi_download: "http://upstream-proxy.internal/pypi"
 ```
 For protocols that use separate metadata and download services, configure both values. They may point to the same endpoint when chaining proxies:
 ```yaml
 upstream:
  pypi: "https://upstream-proxy.example.com/pypi"
  pypi_download: "https://upstream-proxy.example.com/pypi"
  nuget: "https://upstream-proxy.example.com/nuget"
  nuget_search: "https://upstream-proxy.example.com/nuget"
  composer: "https://upstream-proxy.example.com/composer"
  composer_repository: "https://upstream-proxy.example.com/composer"
 ```
 `upstream.hex_api` is used for cooldown timestamps and must expose Hex's `/api/packages/{name}` JSON endpoint.
 Helm HTTP repositories and additional OCI registries are configured as named maps:
 ```yaml
 upstream:
  # Named HTTP Helm chart repositories, served at /helm/{name}/.
  helm:
    bitnami: "https://charts.bitnami.com/bitnami"
  # Named OCI registries. Select one with the repository prefix
  # upstream/{name}/, e.g. oci://proxy.example.com/upstream/ghcr/owner/chart.
  oci:
    ghcr: "https://ghcr.io"
 ```
 Helm HTTP repositories are read-only. The proxy fetches and rewrites each
 repository's `index.yaml` so chart archives are downloaded through the proxy.
 Chart archives are retained only when their SHA-256 digest matches the digest
 listed in the index. Relative and absolute chart URLs are both supported.
 Generic HTTP upstreams proxy plain downloads from fixed base URLs:
 ```yaml
 upstream:
  # Named HTTP upstreams, served at /generic/{name}/. The rest of the
  # request path and the query string are appended to the upstream URL.
  generic:
    github: "https://github.com"
    github-api: "https://api.github.com"
  auth:
    # Optional: raise the GitHub API rate limit. Scoped to this host only,
    # so the token is never sent to the object store GitHub redirects to.
    "https://api.github.com":
      type: bearer
      token: "${GITHUB_TOKEN}"
 ```
 Only configured upstreams are reachable, so this is not an open HTTP proxy.
 Paths shaped like `{owner}/{repo}/releases/download/{tag}/{asset}` are
 version-pinned GitHub release assets: they are stored in the artifact cache
 and served from it without revalidation, including while the upstream is
 down. Every other path is served through the metadata cache (`cache_metadata`
 must be enabled for offline fallback): fresh within `metadata_ttl`, then
 revalidated with the upstream's `ETag`/`Last-Modified`, and served stale with
 a `Warning: 110` header when the upstream fails, refuses or rate-limits the
 request. Metadata responses are buffered up to `metadata_max_size`, so keep
 large mutable downloads (`releases/latest/download/...`) off this route.
 This is the cache behind [mise](https://mise.jdx.dev)'s aqua backend; see the
 mise section in the README for the client-side `url_replacements`.
 `upstream.oci_default` sets the registry used by unprefixed `/v2` requests,
 while `upstream.oci` selects named registries through the `upstream/{name}/`
 repository prefix. For example, `oci://proxy.example.com/upstream/ghcr/owner/chart`
 uses the `ghcr` registry with `owner/chart` as its repository.
 When the proxy uses plain HTTP (for example `localhost:8080`), pass
 `--plain-http` to Helm OCI commands.
 ```yaml
 upstream:
  # Named Alpine APK repositories, served at /apk/{name}/.
  apk:
    alpine: "https://dl-cdn.alpinelinux.org/alpine"
 ```
 Alpine APK repositories are read-only. Requests to `/apk/{name}/…` mirror the
 upstream layout, e.g. `/apk/alpine/v3.22/main/x86_64/APKINDEX.tar.gz`. Indexes
 (v2 `APKINDEX.tar.gz`, v3 `Packages.adb`) and detached signatures are cached
 with the metadata TTL and served byte-for-byte unchanged so apk signature
 verification keeps working; `.apk` packages use the shared artifact cache.
 When `upstream.apk` is empty, a single repository named `alpine` pointing at
 the official mirror is available; configuring any entry replaces that default.
 ## Authentication
-Configure authentication for private upstream registries. The same authentication-aware client is used for metadata and artifact downloads, and credentials can reference environment variables using `${VAR_NAME}` syntax.
+Configure authentication for private upstream registries. Auth is matched by URL prefix, and credentials can reference environment variables using `${VAR_NAME}` syntax.
 OCI registries that return a Bearer challenge from a `/v2/{repository}/…` endpoint are handled automatically. The proxy discovers the token realm from `WWW-Authenticate`, applies any configured credentials for the token URL, and reuses the scoped token until shortly before it expires.
 ### Bearer Token
@ -316,24 +167,9 @@ upstream:
      header_value: "${MAVEN_TOKEN}"
 ```
 ### AWS ECR
 Private ECR registries issue authorization tokens that expire after 12 hours. The `ecr` auth type calls `ecr:GetAuthorizationToken` on demand, caches the result, and refreshes it shortly before expiry, so no static credential appears in the config file:
 ```yaml
 upstream:
  oci:
    ecr: "https://123456789012.dkr.ecr.eu-west-1.amazonaws.com"
  auth:
    "https://123456789012.dkr.ecr.eu-west-1.amazonaws.com":
      type: ecr
 ```
 AWS credentials are resolved by the SDK's default chain, which covers EKS IAM Roles for Service Accounts (IRSA), EC2/ECS instance profiles, `AWS_ACCESS_KEY_ID` / `AWS_SECRET_ACCESS_KEY` environment variables, and `~/.aws/credentials`. The IAM identity needs the `ecr:GetAuthorizationToken` action plus the usual `ecr:BatchGetImage` / `ecr:GetDownloadUrlForLayer` permissions on the target repositories. The region is inferred from private ECR IPv4, dual-stack, and FIPS hostnames. For other endpoint formats, set `region` explicitly or configure a default region for the SDK.
 ### URL Matching
-Auth keys must be absolute URLs. Matching compares the scheme, host, effective port, and path-segment prefix, preventing credentials for `registry.example.com` from being sent to a lookalike host such as `registry.example.com.evil.test`. The longest matching scope wins, so you can configure different credentials for different paths:
+Auth configs are matched by URL prefix. The longest matching prefix wins, so you can configure different credentials for different paths:
 ```yaml
 upstream:
@ -348,249 +184,6 @@ upstream:
      token: "${PRIVATE_TOKEN}"
 ```
 ## Gradle Build Cache
 The `/gradle` endpoint supports optional safeguards for upload control and cache retention.
 ```yaml
 gradle:
  build_cache:
    read_only: false
    max_upload_size: "100MB"
    max_age: "168h"
    max_size: "20GB"
    sweep_interval: "10m"
 ```
 | Config | Environment | Description |
 |--------|-------------|-------------|
 | `gradle.build_cache.read_only` | `PROXY_GRADLE_BUILD_CACHE_READ_ONLY` | Disable PUT uploads and keep GET/HEAD read-only |
 | `gradle.build_cache.max_upload_size` | `PROXY_GRADLE_BUILD_CACHE_MAX_UPLOAD_SIZE` | Maximum accepted PUT body size (must be > 0) |
 | `gradle.build_cache.max_age` | `PROXY_GRADLE_BUILD_CACHE_MAX_AGE` | Delete entries older than this duration (default `168h`, set `0` to disable) |
 | `gradle.build_cache.max_size` | `PROXY_GRADLE_BUILD_CACHE_MAX_SIZE` | Total size cap for `_gradle/http-build-cache`, deleting oldest first (`0` disables) |
 | `gradle.build_cache.sweep_interval` | `PROXY_GRADLE_BUILD_CACHE_SWEEP_INTERVAL` | Frequency for background eviction sweeps |
 `max_age` and `max_size` are independent and can be combined. When both are set, age-based eviction runs first, then size-based eviction trims remaining entries oldest-first.
 ## Cooldown
 The cooldown feature hides package versions published too recently, giving the community time to spot malicious releases before they reach your projects. When a version is within its cooldown period, it's stripped from metadata responses so package managers won't install it.
 ```yaml
 cooldown:
  default: "3d"
  ecosystems:
    npm: "7d"
    cargo: "0"
  packages:
    "pkg:npm/lodash": "0"
    "pkg:npm/@babel/core": "14d"
 ```
 | Config | Environment | Description |
 |--------|-------------|-------------|
 | `cooldown.default` | `PROXY_COOLDOWN_DEFAULT` | Global default cooldown |
 | `cooldown.ecosystems` | - | Per-ecosystem overrides |
 | `cooldown.packages` | - | Per-package overrides (keyed by PURL) |
 Durations support days (`7d`), hours (`48h`), and minutes (`30m`). Set to `0` to disable.
 Package PURL keys are normalized to canonical form before matching, so `pkg:npm/@babel/core` and `pkg:npm/%40babel/core` are equivalent, as are `pkg:pypi/Django` and `pkg:pypi/django`. If both forms configure the same package, the canonical entry wins.
 Resolution order: package override, then ecosystem override, then global default. This lets you set a conservative default while exempting trusted packages.
 Currently supported for npm, PyPI, pub.dev, Composer, Cargo, NuGet, Conda, RubyGems, and Hex. These ecosystems include publish timestamps in their metadata.
 Note: Hex cooldown requires disabling registry signature verification since the proxy re-encodes the protobuf payload without the original signature. Set `HEX_NO_VERIFY_REPO_ORIGIN=1` or configure your repo with `no_verify: true`.
 ## Artifact Scanning
 Cooldown only ever looks at a version's *publish timestamp* — it never inspects the actual bytes of an artifact. Artifact scanning runs after a fetched artifact is staged into storage but before it becomes visible from cache, so an external scanner (trivy, ClamAV, Wiz, or any custom service) can block a bad verdict from ever reaching a client.
 ```yaml
 scanning:
  enabled: true
  fail_open: false
  timeout: 30s
  signing_key: ${PROXY_SCANNING_SIGNING_KEY}
  fetch_base_url: http://proxy.internal:8080
  scanners:
    - name: clamav
      url: http://clamav-adapter:8080/scan
      mode: block
    - name: trivy
      url: http://trivy-adapter:8081/scan
      mode: monitor
      ecosystems: [npm, pypi]
 ```
 | Config | Environment | Description |
 |--------|-------------|-------------|
 | `scanning.enabled` | `PROXY_SCANNING_ENABLED` | Turn on the scan gate. When false (default), artifacts are cached exactly as if scanning didn't exist |
 | `scanning.fail_open` | `PROXY_SCANNING_FAIL_OPEN` | Treat scanner errors/timeouts as allow instead of block. Default is fail-closed |
 | `scanning.timeout` | `PROXY_SCANNING_TIMEOUT` | Per-scan-call timeout, Go duration syntax (default `30s`) |
 | `scanning.signing_key` | `PROXY_SCANNING_SIGNING_KEY` | Signs pull requests to the internal scan-fetch route. Required whenever `enabled` is true |
 | `scanning.fetch_base_url` | `PROXY_SCANNING_FETCH_BASE_URL` | Address scanners use to reach this proxy to pull staged artifacts. Defaults to `base_url` |
 | `scanning.scanners` | - | List of external scanning services (YAML only) |
 | `scanning.scanners[].name` | - | Identifies this scanner in logs and metrics |
 | `scanning.scanners[].url` | - | Endpoint the proxy POSTs scan notifications to |
 | `scanning.scanners[].mode` | - | `block` (default) or `monitor` |
 | `scanning.scanners[].ecosystems` | - | Restricts this scanner to specific ecosystems (e.g. `npm`, `pypi`). Empty means all ecosystems |
 | `scanning.scanners[].headers` | - | Extra HTTP headers sent with every scan request (e.g. for authenticating to the scanner service). Values support `${VAR_NAME}` expansion |
 ### How caching defers to a scan verdict
 The proxy never uploads artifact bytes to a scanner. When an artifact is fetched from upstream, it's stored to the configured storage backend first, exactly as without scanning. If scanning is enabled for the artifact's ecosystem, the proxy then notifies each applicable scanner with package metadata and a short-lived, HMAC-signed URL pointing at the internal `/_internal/scan-fetch` route; each scanner GETs that URL itself to pull the exact bytes staged in storage and runs its own scan against them.
 Scanners configured for the same ecosystem all run concurrently, never sequentially. The moment any `block`-mode scanner reports a not-allowed verdict (or errors, unless `fail_open` is set), the proxy cancels the in-flight calls to the other scanners and deletes the staged artifact — it's never committed to the cache database, so it was never visible to a client. If nothing blocks, the proxy waits for every `block`-mode scanner to finish before caching the artifact and serving it. A `monitor`-mode scanner's findings are logged and never gate the wait or the caching decision, even when it reports not-allowed.
 A blocked download surfaces to the client as `403 Forbidden` with the scanner's reason, across every ecosystem handler.
 ### Scanner HTTP contract
 Any external service that implements this contract can act as a scanner — a trivy wrapper, a clamav-rest bridge, a Wiz connector, or an in-house service. The proxy POSTs a notify request to `scanning.scanners[].url` and waits for a JSON verdict.
 **Request**
 | Field | Type | Description |
 |-------|------|-------------|
 | `ecosystem` | string | e.g. `npm`, `pypi`, `cargo` |
 | `name` | string | Package name |
 | `version` | string | Package version |
 | `filename` | string | Artifact filename |
 | `purl` | string | Package URL (PURL) identifying this exact version |
 | `content_type` | string | Artifact content type |
 | `size` | integer | Artifact size in bytes |
 | `fetch_url` | string | Short-lived signed URL; GET this to retrieve the exact staged bytes |
 ```json
 {
  "ecosystem": "npm", "name": "left-pad", "version": "1.0.0",
  "filename": "left-pad-1.0.0.tgz", "purl": "pkg:npm/left-pad@1.0.0",
  "content_type": "application/octet-stream", "size": 1234,
  "fetch_url": "https://proxy.internal/_internal/scan-fetch?path=...&exp=...&sig=..."
 }
 ```
 **Response**
 | Field | Type | Description |
 |-------|------|-------------|
 | `allowed` | boolean | Whether the artifact may be cached and served |
 | `reason` | string | Human-readable reason, surfaced to the client when `allowed` is false |
 | `findings` | array | Optional list of `{"severity", "title", "description"}` objects |
 ```json
 {
  "allowed": false,
  "reason": "malware detected",
  "findings": [
    {"severity": "critical", "title": "Trojan.GenericKD", "description": "..."}
  ]
 }
 ```
 The scanner must respond within `scanning.timeout` (default `30s`); a timeout is treated the same as a `block` verdict unless `fail_open` is set.
 ### The `/_internal/scan-fetch` route
 `fetch_url` points at an internal route, `/_internal/scan-fetch`, that streams a staged object straight from the proxy's storage backend via a short-lived HMAC-signed token (`path`, `exp`, `sig` query parameters). This works identically across every storage backend — local filesystem, S3, GCS, Azure — since it never depends on a backend-specific presigned URL, only on the one storage operation every backend already implements.
 This route is not part of the public API. It's meant only for scanners to pull artifacts they've been notified about, and should be restricted to internal-network access at the ingress/network-policy layer — the HMAC scoping (one object, a short TTL) limits what a leaked token can do, but isn't a substitute for network restriction. Its query parameters are also documented in the generated [OpenAPI spec](../README.md#openapi-swagger).
 The route only exists when scanning is actually configured: it's not mounted at all unless at least one scanner is enabled and `scanning.signing_key` is set, and it also refuses every request with `404` if either condition somehow isn't met at request time. There is no way to reach it, even with a forged token, when scanning is disabled.
 ## Metadata Caching
 By default the proxy fetches metadata fresh from upstream on every request. Enable `cache_metadata` to store metadata responses in the database and storage backend for offline fallback. When upstream is unreachable, the proxy serves the last cached copy. ETag-based revalidation avoids re-downloading unchanged metadata.
 OCI manifests and tag lists are always cached because cached image blobs cannot be pulled without their manifests and offline clients may need tag resolution. Digest-addressed manifests are immutable and served directly from cache. Tag-addressed manifests and tag lists follow `metadata_ttl`, revalidate when stale, and fall back to the last cached response when the registry is unavailable.
 ```yaml
 cache_metadata: true
 ```
 Or via environment variable: `PROXY_CACHE_METADATA=true`.
 The `proxy mirror` command always enables metadata caching regardless of this setting.
 ### Metadata TTL
 When metadata caching is enabled, `metadata_ttl` controls how long a cached response is considered fresh before revalidating with upstream. During the TTL window, cached metadata is served directly without contacting upstream, reducing latency and upstream load.
 ```yaml
 metadata_ttl: "5m"   # default
 ```
 Or via environment variable: `PROXY_METADATA_TTL=10m`.
 Set to `"0"` to always revalidate with upstream (ETag-based conditional requests still avoid re-downloading unchanged content).
 When upstream is unreachable and the cached entry is past its TTL, the proxy serves the stale cached copy with a `Warning: 110 - "Response is Stale"` header so clients can tell the data may be outdated.
 ### Metadata size limit
 Upstream metadata responses are buffered in memory before being rewritten and served. `metadata_max_size` caps that buffer to protect against OOM from a misbehaving upstream. Some npm packages with thousands of versions (for example `renovate`) exceed the 100 MB default, so raise this if you see `metadata response exceeds size limit` in the logs.
 ```yaml
 metadata_max_size: "100MB"   # default
 ```
 Or via environment variable: `PROXY_METADATA_MAX_SIZE=250MB`.
 ## Upstream HTTP timeout
 Protocol handlers use a shared HTTP client for upstream requests such as metadata fetches and pass-through file downloads. `http_timeout` sets that client's per-request timeout. Raise it if slow upstreams or large metadata responses cause `context deadline exceeded` errors.
 ```yaml
 http_timeout: "30s"   # default
 ```
 Or via environment variable: `PROXY_HTTP_TIMEOUT=2m`.
 Set to `"0"` to disable the timeout entirely (requests then rely only on the server's write timeout). Independently of this setting, the shared transport gives up on an upstream that has not sent response headers within 60 seconds.
 ## Mirror API
 The `/api/mirror` endpoints are disabled by default. Enable them to allow starting mirror jobs via HTTP:
 ```yaml
 mirror_api: true
 ```
 Or via environment variable: `PROXY_MIRROR_API=true`.
 When disabled, the endpoints are not registered and return 404.
 Start a mirror job with either PURLs or an inline CycloneDX or SPDX JSON document:
 ```bash
 curl -X POST http://localhost:8080/api/mirror \
  -H "Content-Type: application/json" \
  -d '{"sbom":{"bomFormat":"CycloneDX","components":[{"purl":"pkg:npm/lodash@4.17.21"}]}}'
 ```
 ## Mirror Command
 The `proxy mirror` command pre-populates the cache from various sources. It accepts the same storage and database flags as `serve`.
 | Flag | Default | Description |
 |------|---------|-------------|
 | `--sbom` | | Path to CycloneDX or SPDX SBOM file |
 | `--concurrency` | `4` | Number of parallel downloads |
 | `--dry-run` | `false` | Show what would be mirrored without downloading |
 | `--config` | | Path to configuration file |
 | `--storage-url` | | Storage URL |
 | `--database-driver` | | Database driver |
 | `--database-path` | | SQLite database file |
 | `--database-url` | | PostgreSQL connection URL |
 Positional arguments are treated as PURLs:
 ```bash
 proxy mirror pkg:npm/lodash@4.17.21 pkg:cargo/serde@1.0.0
 ```
 ## Docker
 ### SQLite with Local Storage
--- a/docs/migrations.md
+++ b/docs/migrations.md
@ -1,51 +0,0 @@
 # Database Migrations
 Schema changes are tracked in a `migrations` table. Each migration has a name and a function. On startup, `MigrateSchema()` loads the set of already-applied names in one query and runs anything new.
 Fresh databases created via `Create()` get the full schema and all migrations are recorded as already applied.
 ## Adding a migration
 In `internal/database/schema.go`:
 1. Write a migration function:
 ```go
 func migrateAddWidgetColumn(db *DB) error {
    hasCol, err := db.HasColumn("packages", "widget")
    if err != nil {
        return fmt.Errorf("checking column widget: %w", err)
    }
    if !hasCol {
        colType := "TEXT"
        if db.dialect == DialectPostgres {
            colType = "TEXT" // adjust if types differ
        }
        if _, err := db.Exec(fmt.Sprintf("ALTER TABLE packages ADD COLUMN widget %s", colType)); err != nil {
            return fmt.Errorf("adding column widget: %w", err)
        }
    }
    return nil
 }
 ```
 2. Append it to the `migrations` slice with the next sequential prefix:
 ```go
 var migrations = []migration{
    {"001_add_packages_enrichment_columns", migrateAddPackagesEnrichmentColumns},
    {"002_add_versions_enrichment_columns", migrateAddVersionsEnrichmentColumns},
    {"003_ensure_artifacts_table", migrateEnsureArtifactsTable},
    {"004_ensure_vulnerabilities_table", migrateEnsureVulnerabilitiesTable},
    {"005_add_widget_column", migrateAddWidgetColumn}, // new
 }
 ```
 3. Add the same column to both `schemaSQLite` and `schemaPostgres` at the top of the file so fresh databases start with the full schema.
 ## Rules
 - Migration functions must be idempotent. Use `HasColumn`/`HasTable` checks or `IF NOT EXISTS` clauses so they're safe to run against a database that already has the change.
 - Handle both SQLite and Postgres dialects. Common differences: `DATETIME` vs `TIMESTAMP`, `INTEGER DEFAULT 0` vs `BOOLEAN DEFAULT FALSE`, `INTEGER PRIMARY KEY` vs `SERIAL PRIMARY KEY`.
 - Never reorder or rename existing entries. The name string is the migration's identity in the database.
 - Never remove old migrations from the list. They won't run on already-migrated databases, but they need to exist for older databases upgrading for the first time.
--- a/docs/swagger/docs.go
+++ b/docs/swagger/docs.go
@ -1,839 +0,0 @@
 // Package swagger Code generated by swaggo/swag. DO NOT EDIT
 package swagger
 import "github.com/swaggo/swag"
 const docTemplate = `{
    "schemes": {{ marshal .Schemes }},
    "swagger": "2.0",
    "info": {
        "description": "{{escape .Description}}",
        "title": "{{.Title}}",
        "contact": {},
        "version": "{{.Version}}"
    },
    "host": "{{.Host}}",
    "basePath": "{{.BasePath}}",
    "paths": {
        "/_internal/scan-fetch": {
            "get": {
                "description": "Streams the exact bytes staged in storage for a pre-cache security scan.\nRequires a short-lived HMAC-signed token minted by the proxy itself and\ndelivered via the fetch_url field of the scan notify request (see the\nArtifact Scanning section of docs/configuration.md). Not part of the\npublic API; restrict access to the scanner network at the ingress layer.",
                "produces": [
                    "application/octet-stream"
                ],
                "tags": [
                    "scanning"
                ],
                "summary": "Fetch a staged artifact for scanning",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Storage path of the staged artifact",
                        "name": "path",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "integer",
                        "description": "Token expiry, Unix seconds",
                        "name": "exp",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "HMAC-SHA256 signature over the string path|exp",
                        "name": "sig",
                        "in": "query",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "file"
                        }
                    },
                    "403": {
                        "description": "invalid, expired, or tampered token",
                        "schema": {
                            "type": "string"
                        }
                    },
                    "404": {
                        "description": "object not found in storage, or scanning is not configured",
                        "schema": {
                            "type": "string"
                        }
                    }
                }
            }
        },
        "/api/bulk": {
            "post": {
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Bulk package lookup by PURL",
                "parameters": [
                    {
                        "description": "PURLs",
                        "name": "request",
                        "in": "body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/server.BulkRequest"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.BulkResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/outdated": {
            "post": {
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Check outdated packages",
                "parameters": [
                    {
                        "description": "Packages to check",
                        "name": "request",
                        "in": "body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/server.OutdatedRequest"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.OutdatedResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/packages": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "List cached packages",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "query"
                    },
                    {
                        "enum": [
                            "hits",
                            "name",
                            "size",
                            "cached_at",
                            "ecosystem",
                            "vulns"
                        ],
                        "type": "string",
                        "description": "Sort",
                        "name": "sort",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.PackagesListResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/search": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Search cached packages",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Query",
                        "name": "q",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.SearchResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/health": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "meta"
                ],
                "summary": "Health check",
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.HealthResponse"
                        }
                    },
                    "503": {
                        "description": "Service Unavailable",
                        "schema": {
                            "$ref": "#/definitions/server.HealthResponse"
                        }
                    }
                }
            }
        },
        "/stats": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "meta"
                ],
                "summary": "Cache statistics",
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.StatsResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/browse/{ecosystem}/{name}/{version}": {
            "get": {
                "description": "Lists files from the first cached artifact for a package version.",
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "List files inside a cached artifact",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Version",
                        "name": "version",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Directory path inside the archive",
                        "name": "path",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.BrowseListResponse"
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/browse/{ecosystem}/{name}/{version}/file/{filepath}": {
            "get": {
                "description": "Streams a single file from the cached artifact. The file path may contain slashes.",
                "produces": [
                    "application/octet-stream"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "Fetch a file inside a cached artifact",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Version",
                        "name": "version",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "File path inside the archive",
                        "name": "filepath",
                        "in": "path",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "file"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/compare/{ecosystem}/{name}/{fromVersion}/{toVersion}": {
            "get": {
                "description": "Returns a structured diff for two cached versions.",
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "Compare two cached versions",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "From version",
                        "name": "fromVersion",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "To version",
                        "name": "toVersion",
                        "in": "path",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "object",
                            "additionalProperties": true
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        }
    },
    "definitions": {
        "server.BrowseFileInfo": {
            "type": "object",
            "properties": {
                "is_dir": {
                    "type": "boolean"
                },
                "mod_time": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "path": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                }
            }
        },
        "server.BrowseListResponse": {
            "type": "object",
            "properties": {
                "files": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.BrowseFileInfo"
                    }
                },
                "path": {
                    "type": "string"
                }
            }
        },
        "server.BulkRequest": {
            "type": "object",
            "properties": {
                "purls": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    }
                }
            }
        },
        "server.BulkResponse": {
            "type": "object",
            "properties": {
                "packages": {
                    "type": "object",
                    "additionalProperties": {
                        "$ref": "#/definitions/server.PackageResponse"
                    }
                }
            }
        },
        "server.ErrorResponse": {
            "type": "object",
            "properties": {
                "code": {
                    "type": "string"
                },
                "message": {
                    "type": "string"
                }
            }
        },
        "server.HealthCheck": {
            "type": "object",
            "properties": {
                "error": {
                    "type": "string"
                },
                "status": {
                    "type": "string"
                },
                "step": {
                    "type": "string"
                }
            }
        },
        "server.HealthResponse": {
            "type": "object",
            "properties": {
                "checks": {
                    "type": "object",
                    "additionalProperties": {
                        "$ref": "#/definitions/server.HealthCheck"
                    }
                },
                "circuit_breakers": {
                    "description": "CircuitBreakers reports the state (\"open\" or \"closed\") of each upstream\nregistry's artifact-fetch circuit breaker, keyed by the host fetched from\nor, where the fetch URL has none to read, by an opaque placeholder\nstanding in for it. It is omitted when no breaker has been created yet.\nAn open breaker fails every artifact fetch it covers without contacting\nthe upstream, but says nothing about this proxy's own health, so it does\nnot change Status.",
                    "type": "object",
                    "additionalProperties": {
                        "type": "string"
                    }
                },
                "status": {
                    "type": "string"
                }
            }
        },
        "server.OutdatedPackage": {
            "type": "object",
            "properties": {
                "ecosystem": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "version": {
                    "type": "string"
                }
            }
        },
        "server.OutdatedRequest": {
            "type": "object",
            "properties": {
                "packages": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.OutdatedPackage"
                    }
                }
            }
        },
        "server.OutdatedResponse": {
            "type": "object",
            "properties": {
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.OutdatedResult"
                    }
                }
            }
        },
        "server.OutdatedResult": {
            "type": "object",
            "properties": {
                "ecosystem": {
                    "type": "string"
                },
                "is_outdated": {
                    "type": "boolean"
                },
                "latest_version": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "version": {
                    "type": "string"
                }
            }
        },
        "server.PackageListResult": {
            "type": "object",
            "properties": {
                "cached_at": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "hits": {
                    "type": "integer"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "license_category": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                },
                "vuln_count": {
                    "type": "integer"
                }
            }
        },
        "server.PackageResponse": {
            "type": "object",
            "properties": {
                "description": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "homepage": {
                    "type": "string"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "license_category": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "registry_url": {
                    "type": "string"
                },
                "repository": {
                    "type": "string"
                }
            }
        },
        "server.PackagesListResponse": {
            "type": "object",
            "properties": {
                "count": {
                    "type": "integer"
                },
                "ecosystem": {
                    "type": "string"
                },
                "page": {
                    "type": "integer"
                },
                "per_page": {
                    "type": "integer"
                },
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.PackageListResult"
                    }
                },
                "sort_by": {
                    "type": "string"
                },
                "total": {
                    "type": "integer"
                }
            }
        },
        "server.SearchPackageResult": {
            "type": "object",
            "properties": {
                "cached_at": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "hits": {
                    "type": "integer"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                }
            }
        },
        "server.SearchResponse": {
            "type": "object",
            "properties": {
                "count": {
                    "type": "integer"
                },
                "query": {
                    "type": "string"
                },
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.SearchPackageResult"
                    }
                }
            }
        },
        "server.StatsResponse": {
            "type": "object",
            "properties": {
                "cached_artifacts": {
                    "type": "integer"
                },
                "database_path": {
                    "type": "string"
                },
                "storage_url": {
                    "type": "string"
                },
                "total_size": {
                    "type": "string"
                },
                "total_size_bytes": {
                    "type": "integer"
                }
            }
        }
    }
 }`
 // SwaggerInfo holds exported Swagger Info so clients can modify it
 var SwaggerInfo = &swag.Spec{
 	Version:          "0.1.0",
 	Host:             "",
 	BasePath:         "/",
 	Schemes:          []string{},
 	Title:            "git-pkgs proxy API",
 	Description:      "HTTP API for package enrichment, vulnerability lookup, cache stats, and source browsing.",
 	InfoInstanceName: "swagger",
 	SwaggerTemplate:  docTemplate,
 	LeftDelim:        "{{",
 	RightDelim:       "}}",
 }
 func init() {
 	swag.Register(SwaggerInfo.InstanceName(), SwaggerInfo)
 }
--- a/docs/swagger/swagger.json
+++ b/docs/swagger/swagger.json
@ -1,814 +0,0 @@
 {
    "swagger": "2.0",
    "info": {
        "description": "HTTP API for package enrichment, vulnerability lookup, cache stats, and source browsing.",
        "title": "git-pkgs proxy API",
        "contact": {},
        "version": "0.1.0"
    },
    "basePath": "/",
    "paths": {
        "/_internal/scan-fetch": {
            "get": {
                "description": "Streams the exact bytes staged in storage for a pre-cache security scan.\nRequires a short-lived HMAC-signed token minted by the proxy itself and\ndelivered via the fetch_url field of the scan notify request (see the\nArtifact Scanning section of docs/configuration.md). Not part of the\npublic API; restrict access to the scanner network at the ingress layer.",
                "produces": [
                    "application/octet-stream"
                ],
                "tags": [
                    "scanning"
                ],
                "summary": "Fetch a staged artifact for scanning",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Storage path of the staged artifact",
                        "name": "path",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "integer",
                        "description": "Token expiry, Unix seconds",
                        "name": "exp",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "HMAC-SHA256 signature over the string path|exp",
                        "name": "sig",
                        "in": "query",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "file"
                        }
                    },
                    "403": {
                        "description": "invalid, expired, or tampered token",
                        "schema": {
                            "type": "string"
                        }
                    },
                    "404": {
                        "description": "object not found in storage, or scanning is not configured",
                        "schema": {
                            "type": "string"
                        }
                    }
                }
            }
        },
        "/api/bulk": {
            "post": {
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Bulk package lookup by PURL",
                "parameters": [
                    {
                        "description": "PURLs",
                        "name": "request",
                        "in": "body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/server.BulkRequest"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.BulkResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/outdated": {
            "post": {
                "consumes": [
                    "application/json"
                ],
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Check outdated packages",
                "parameters": [
                    {
                        "description": "Packages to check",
                        "name": "request",
                        "in": "body",
                        "required": true,
                        "schema": {
                            "$ref": "#/definitions/server.OutdatedRequest"
                        }
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.OutdatedResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/packages": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "List cached packages",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "query"
                    },
                    {
                        "enum": [
                            "hits",
                            "name",
                            "size",
                            "cached_at",
                            "ecosystem",
                            "vulns"
                        ],
                        "type": "string",
                        "description": "Sort",
                        "name": "sort",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.PackagesListResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/api/search": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "api"
                ],
                "summary": "Search cached packages",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Query",
                        "name": "q",
                        "in": "query",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.SearchResponse"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/health": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "meta"
                ],
                "summary": "Health check",
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.HealthResponse"
                        }
                    },
                    "503": {
                        "description": "Service Unavailable",
                        "schema": {
                            "$ref": "#/definitions/server.HealthResponse"
                        }
                    }
                }
            }
        },
        "/stats": {
            "get": {
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "meta"
                ],
                "summary": "Cache statistics",
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.StatsResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/browse/{ecosystem}/{name}/{version}": {
            "get": {
                "description": "Lists files from the first cached artifact for a package version.",
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "List files inside a cached artifact",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Version",
                        "name": "version",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Directory path inside the archive",
                        "name": "path",
                        "in": "query"
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "$ref": "#/definitions/server.BrowseListResponse"
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/browse/{ecosystem}/{name}/{version}/file/{filepath}": {
            "get": {
                "description": "Streams a single file from the cached artifact. The file path may contain slashes.",
                "produces": [
                    "application/octet-stream"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "Fetch a file inside a cached artifact",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Version",
                        "name": "version",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "File path inside the archive",
                        "name": "filepath",
                        "in": "path",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "file"
                        }
                    },
                    "400": {
                        "description": "Bad Request",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        },
        "/ui/api/compare/{ecosystem}/{name}/{fromVersion}/{toVersion}": {
            "get": {
                "description": "Returns a structured diff for two cached versions.",
                "produces": [
                    "application/json"
                ],
                "tags": [
                    "browse"
                ],
                "summary": "Compare two cached versions",
                "parameters": [
                    {
                        "type": "string",
                        "description": "Ecosystem",
                        "name": "ecosystem",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "Package name",
                        "name": "name",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "From version",
                        "name": "fromVersion",
                        "in": "path",
                        "required": true
                    },
                    {
                        "type": "string",
                        "description": "To version",
                        "name": "toVersion",
                        "in": "path",
                        "required": true
                    }
                ],
                "responses": {
                    "200": {
                        "description": "OK",
                        "schema": {
                            "type": "object",
                            "additionalProperties": true
                        }
                    },
                    "404": {
                        "description": "Not Found",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    },
                    "500": {
                        "description": "Internal Server Error",
                        "schema": {
                            "$ref": "#/definitions/server.ErrorResponse"
                        }
                    }
                }
            }
        }
    },
    "definitions": {
        "server.BrowseFileInfo": {
            "type": "object",
            "properties": {
                "is_dir": {
                    "type": "boolean"
                },
                "mod_time": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "path": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                }
            }
        },
        "server.BrowseListResponse": {
            "type": "object",
            "properties": {
                "files": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.BrowseFileInfo"
                    }
                },
                "path": {
                    "type": "string"
                }
            }
        },
        "server.BulkRequest": {
            "type": "object",
            "properties": {
                "purls": {
                    "type": "array",
                    "items": {
                        "type": "string"
                    }
                }
            }
        },
        "server.BulkResponse": {
            "type": "object",
            "properties": {
                "packages": {
                    "type": "object",
                    "additionalProperties": {
                        "$ref": "#/definitions/server.PackageResponse"
                    }
                }
            }
        },
        "server.ErrorResponse": {
            "type": "object",
            "properties": {
                "code": {
                    "type": "string"
                },
                "message": {
                    "type": "string"
                }
            }
        },
        "server.HealthCheck": {
            "type": "object",
            "properties": {
                "error": {
                    "type": "string"
                },
                "status": {
                    "type": "string"
                },
                "step": {
                    "type": "string"
                }
            }
        },
        "server.HealthResponse": {
            "type": "object",
            "properties": {
                "checks": {
                    "type": "object",
                    "additionalProperties": {
                        "$ref": "#/definitions/server.HealthCheck"
                    }
                },
                "circuit_breakers": {
                    "description": "CircuitBreakers reports the state (\"open\" or \"closed\") of each upstream\nregistry's artifact-fetch circuit breaker, keyed by the host fetched from\nor, where the fetch URL has none to read, by an opaque placeholder\nstanding in for it. It is omitted when no breaker has been created yet.\nAn open breaker fails every artifact fetch it covers without contacting\nthe upstream, but says nothing about this proxy's own health, so it does\nnot change Status.",
                    "type": "object",
                    "additionalProperties": {
                        "type": "string"
                    }
                },
                "status": {
                    "type": "string"
                }
            }
        },
        "server.OutdatedPackage": {
            "type": "object",
            "properties": {
                "ecosystem": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "version": {
                    "type": "string"
                }
            }
        },
        "server.OutdatedRequest": {
            "type": "object",
            "properties": {
                "packages": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.OutdatedPackage"
                    }
                }
            }
        },
        "server.OutdatedResponse": {
            "type": "object",
            "properties": {
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.OutdatedResult"
                    }
                }
            }
        },
        "server.OutdatedResult": {
            "type": "object",
            "properties": {
                "ecosystem": {
                    "type": "string"
                },
                "is_outdated": {
                    "type": "boolean"
                },
                "latest_version": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "version": {
                    "type": "string"
                }
            }
        },
        "server.PackageListResult": {
            "type": "object",
            "properties": {
                "cached_at": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "hits": {
                    "type": "integer"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "license_category": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                },
                "vuln_count": {
                    "type": "integer"
                }
            }
        },
        "server.PackageResponse": {
            "type": "object",
            "properties": {
                "description": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "homepage": {
                    "type": "string"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "license_category": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "registry_url": {
                    "type": "string"
                },
                "repository": {
                    "type": "string"
                }
            }
        },
        "server.PackagesListResponse": {
            "type": "object",
            "properties": {
                "count": {
                    "type": "integer"
                },
                "ecosystem": {
                    "type": "string"
                },
                "page": {
                    "type": "integer"
                },
                "per_page": {
                    "type": "integer"
                },
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.PackageListResult"
                    }
                },
                "sort_by": {
                    "type": "string"
                },
                "total": {
                    "type": "integer"
                }
            }
        },
        "server.SearchPackageResult": {
            "type": "object",
            "properties": {
                "cached_at": {
                    "type": "string"
                },
                "ecosystem": {
                    "type": "string"
                },
                "hits": {
                    "type": "integer"
                },
                "latest_version": {
                    "type": "string"
                },
                "license": {
                    "type": "string"
                },
                "name": {
                    "type": "string"
                },
                "size": {
                    "type": "integer"
                }
            }
        },
        "server.SearchResponse": {
            "type": "object",
            "properties": {
                "count": {
                    "type": "integer"
                },
                "query": {
                    "type": "string"
                },
                "results": {
                    "type": "array",
                    "items": {
                        "$ref": "#/definitions/server.SearchPackageResult"
                    }
                }
            }
        },
        "server.StatsResponse": {
            "type": "object",
            "properties": {
                "cached_artifacts": {
                    "type": "integer"
                },
                "database_path": {
                    "type": "string"
                },
                "storage_url": {
                    "type": "string"
                },
                "total_size": {
                    "type": "string"
                },
                "total_size_bytes": {
                    "type": "integer"
                }
            }
        }
    }
 }
--- a/go.mod
+++ b/go.mod
@ -1,149 +1,118 @@
 module github.com/git-pkgs/proxy
-go 1.26.7
+go 1.25.7
 require (
-	github.com/BurntSushi/toml v1.6.0
+	github.com/git-pkgs/archives v0.2.0
-	github.com/CycloneDX/cyclonedx-go v0.12.0
+	github.com/git-pkgs/enrichment v0.1.5
-	github.com/aws/aws-sdk-go-v2/config v1.33.2
+	github.com/git-pkgs/git-pkgs v0.15.1-0.20260304191500-e296d0146017
-	github.com/aws/aws-sdk-go-v2/service/ecr v1.64.0
+	github.com/git-pkgs/purl v0.1.9
-	github.com/git-pkgs/archives v0.7.0
+	github.com/git-pkgs/registries v0.3.0
-	github.com/git-pkgs/artifacts v0.2.1
+	github.com/git-pkgs/spdx v0.1.1
-	github.com/git-pkgs/cooldown v0.2.0
+	github.com/git-pkgs/vers v0.2.3
-	github.com/git-pkgs/enrichment v0.7.1
+	github.com/git-pkgs/vulns v0.1.3
-	github.com/git-pkgs/gcs v0.1.0
+	github.com/go-chi/chi/v5 v5.2.5
 	github.com/git-pkgs/integrity v0.1.1
 	github.com/git-pkgs/magic v0.3.1
 	github.com/git-pkgs/purl v0.1.20
 	github.com/git-pkgs/registries v0.9.1
 	github.com/git-pkgs/spdx v0.3.1
 	github.com/git-pkgs/vers v0.7.0
 	github.com/git-pkgs/vulns v0.2.3
 	github.com/go-chi/chi/v5 v5.3.2
 	github.com/jmoiron/sqlx v1.4.0
-	github.com/lib/pq v1.12.3
+	github.com/lib/pq v1.11.2
-	github.com/opencontainers/go-digest v1.0.0
+	github.com/prometheus/client_golang v1.23.2
-	github.com/prometheus/client_golang v1.24.1
+	github.com/prometheus/client_model v0.6.2
-	github.com/prometheus/client_model v0.6.3
+	gocloud.dev v0.45.0
 	github.com/spdx/tools-golang v0.5.7
 	github.com/swaggo/swag v1.16.6
 	gocloud.dev v0.46.0
 	golang.org/x/sync v0.23.0
 	google.golang.org/protobuf v1.36.12
 	gopkg.in/yaml.v3 v3.0.1
-	modernc.org/sqlite v1.58.0
+	modernc.org/sqlite v1.46.1
 )
 require (
-	4d63.com/gocheckcompilerdirectives v1.4.0 // indirect
+	4d63.com/gocheckcompilerdirectives v1.3.0 // indirect
 	4d63.com/gochecknoglobals v0.2.2 // indirect
 	charm.land/lipgloss/v2 v2.0.6 // indirect
 	cloud.google.com/go/auth v0.21.0 // indirect
 	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
 	cloud.google.com/go/compute/metadata v0.9.0 // indirect
 	codeberg.org/chavacava/garif v0.2.0 // indirect
 	codeberg.org/polyfloyd/go-errorlint v1.9.0 // indirect
 	dev.gaijin.team/go/exhaustruct/v4 v4.0.0 // indirect
-	dev.gaijin.team/go/exhaustruct/v5 v5.0.3 // indirect
+	dev.gaijin.team/go/golib v0.6.0 // indirect
 	dev.gaijin.team/go/golib v0.8.1 // indirect
 	github.com/4meepo/tagalign v1.4.3 // indirect
-	github.com/Abirdcfly/dupword v0.1.8 // indirect
+	github.com/Abirdcfly/dupword v0.1.7 // indirect
 	github.com/AdminBenni/iota-mixing v1.0.0 // indirect
-	github.com/AlwxSin/noinlineerr v1.0.6 // indirect
+	github.com/AlwxSin/noinlineerr v1.0.5 // indirect
-	github.com/Antonboom/errname v1.1.2 // indirect
+	github.com/Antonboom/errname v1.1.1 // indirect
-	github.com/Antonboom/nilnil v1.1.2 // indirect
+	github.com/Antonboom/nilnil v1.1.1 // indirect
 	github.com/Antonboom/testifylint v1.6.4 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.21.0 // indirect
+	github.com/BurntSushi/toml v1.6.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.13.1 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.4 // indirect
 	github.com/AzureAD/microsoft-authentication-library-for-go v1.7.0 // indirect
 	github.com/ClickHouse/clickhouse-go-linter v1.2.1 // indirect
 	github.com/Djarvur/go-err113 v0.1.1 // indirect
-	github.com/KyleBanks/depth v1.2.1 // indirect
+	github.com/Masterminds/semver/v3 v3.4.0 // indirect
-	github.com/Masterminds/semver/v3 v3.5.0 // indirect
+	github.com/MirrexOne/unqueryvet v1.5.3 // indirect
 	github.com/MirrexOne/unqueryvet v1.5.4 // indirect
 	github.com/OpenPeeDeeP/depguard/v2 v2.2.1 // indirect
-	github.com/PuerkitoBio/purell v1.1.1 // indirect
+	github.com/alecthomas/chroma/v2 v2.23.1 // indirect
 	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
 	github.com/alecthomas/chroma/v2 v2.27.0 // indirect
 	github.com/alecthomas/go-check-sumtype v0.3.1 // indirect
 	github.com/alexkohler/nakedret/v2 v2.0.6 // indirect
-	github.com/alexkohler/prealloc v1.1.0 // indirect
+	github.com/alexkohler/prealloc v1.0.2 // indirect
 	github.com/alfatraining/structtag v1.0.0 // indirect
 	github.com/alingse/asasalint v0.0.11 // indirect
 	github.com/alingse/nilnesserr v0.2.0 // indirect
 	github.com/anchore/go-struct-converter v0.1.0 // indirect
 	github.com/apapsch/go-jsonmerge/v2 v2.0.0 // indirect
-	github.com/ashanbrown/forbidigo/v2 v2.3.1 // indirect
+	github.com/ashanbrown/forbidigo/v2 v2.3.0 // indirect
-	github.com/ashanbrown/makezero/v2 v2.2.1 // indirect
+	github.com/ashanbrown/makezero/v2 v2.1.0 // indirect
-	github.com/aws/aws-sdk-go-v2 v1.46.0 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.41.3 // indirect
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.11 // indirect
+	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.6 // indirect
-	github.com/aws/aws-sdk-go-v2/credentials v1.20.2 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.32.11 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.19.1 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.19.11 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/s3/transfermanager v0.2.3 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.19 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.5.2 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.5 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.8.2 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.19 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.5.1 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.19 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.5 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.18 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.14.1 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.6 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.25 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.11 // indirect
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.102.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/signin v1.8.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.19 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.36.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/s3 v1.96.3 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.41.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/signin v1.0.7 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.48.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.30.12 // indirect
-	github.com/aws/smithy-go v1.28.1 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.16 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.41.8 // indirect
 	github.com/aws/smithy-go v1.24.2 // indirect
 	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bkielbasa/cyclop v1.2.3 // indirect
 	github.com/blizzy78/varnamelen v0.8.0 // indirect
 	github.com/bombsimon/wsl/v4 v4.7.0 // indirect
-	github.com/bombsimon/wsl/v5 v5.9.0 // indirect
+	github.com/bombsimon/wsl/v5 v5.6.0 // indirect
 	github.com/breml/bidichk v0.3.3 // indirect
 	github.com/breml/errchkjson v0.4.1 // indirect
-	github.com/butuzov/ireturn v0.4.1 // indirect
+	github.com/butuzov/ireturn v0.4.0 // indirect
-	github.com/butuzov/mirror v1.3.3 // indirect
+	github.com/butuzov/mirror v1.3.0 // indirect
 	github.com/catenacyber/perfsprint v0.10.1 // indirect
 	github.com/ccojocar/zxcvbn-go v1.0.4 // indirect
 	github.com/cenk/backoff v2.2.1+incompatible // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/charithe/durationcheck v0.0.11 // indirect
-	github.com/charmbracelet/colorprofile v0.4.3 // indirect
+	github.com/charmbracelet/colorprofile v0.2.3-0.20250311203215-f60798e515dc // indirect
-	github.com/charmbracelet/ultraviolet v0.0.0-20260811164956-006e29f97886 // indirect
+	github.com/charmbracelet/lipgloss v1.1.0 // indirect
-	github.com/charmbracelet/x/ansi v0.11.8 // indirect
+	github.com/charmbracelet/x/ansi v0.10.1 // indirect
-	github.com/charmbracelet/x/term v0.2.2 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.13-0.20250311204145-2c3ea96c31dd // indirect
-	github.com/charmbracelet/x/termios v0.1.1 // indirect
+	github.com/charmbracelet/x/term v0.2.1 // indirect
 	github.com/charmbracelet/x/windows v0.2.2 // indirect
 	github.com/ckaznocha/intrange v0.3.1 // indirect
 	github.com/clipperhouse/displaywidth v0.11.0 // indirect
 	github.com/clipperhouse/uax29/v2 v2.7.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.6 // indirect
 	github.com/curioswitch/go-reassign v0.3.0 // indirect
 	github.com/daixiang0/gci v0.13.7 // indirect
 	github.com/dave/dst v0.27.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/denis-tingaikin/go-header v0.5.0 // indirect
-	github.com/dlclark/regexp2/v2 v2.2.1 // indirect
+	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/ecosyste-ms/ecosystems-go v0.4.0 // indirect
+	github.com/ecosyste-ms/ecosystems-go v0.1.1 // indirect
 	github.com/ettle/strcase v0.2.0 // indirect
 	github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a // indirect
-	github.com/fatih/color v1.19.0 // indirect
+	github.com/fatih/color v1.18.0 // indirect
 	github.com/fatih/structtag v1.2.0 // indirect
-	github.com/firefart/nonamedreturns v1.0.8 // indirect
+	github.com/firefart/nonamedreturns v1.0.6 // indirect
 	github.com/fsnotify/fsnotify v1.9.0 // indirect
 	github.com/fzipp/gocyclo v0.6.0 // indirect
-	github.com/ghostiam/protogetter v0.3.21 // indirect
+	github.com/ghostiam/protogetter v0.3.20 // indirect
 	github.com/git-pkgs/packageurl-go v0.3.1 // indirect
-	github.com/git-pkgs/pom v0.1.7 // indirect
+	github.com/github/go-spdx/v2 v2.4.0 // indirect
-	github.com/github/go-spdx/v2 v2.7.0 // indirect
+	github.com/go-critic/go-critic v0.14.3 // indirect
 	github.com/go-critic/go-critic v0.14.4 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-openapi/jsonpointer v0.19.5 // indirect
 	github.com/go-openapi/jsonreference v0.19.6 // indirect
 	github.com/go-openapi/spec v0.20.4 // indirect
 	github.com/go-openapi/swag v0.19.15 // indirect
 	github.com/go-toolsmith/astcast v1.1.0 // indirect
 	github.com/go-toolsmith/astcopy v1.1.0 // indirect
 	github.com/go-toolsmith/astequal v1.2.0 // indirect
@ -156,111 +125,100 @@ require (
 	github.com/gobwas/glob v0.2.3 // indirect
 	github.com/godoc-lint/godoc-lint v0.11.2 // indirect
 	github.com/gofrs/flock v0.13.0 // indirect
 	github.com/golang-jwt/jwt/v5 v5.3.1 // indirect
 	github.com/golangci/asciicheck v0.5.0 // indirect
-	github.com/golangci/dupl v0.0.0-20260401084720-c99c5cf5c202 // indirect
+	github.com/golangci/dupl v0.0.0-20250308024227-f665c8d69b32 // indirect
 	github.com/golangci/go-printf-func-name v0.1.1 // indirect
-	github.com/golangci/gofmt v0.0.0-20260820135601-e84e05053792 // indirect
+	github.com/golangci/gofmt v0.0.0-20250106114630-d62b90e6713d // indirect
-	github.com/golangci/golangci-lint/v2 v2.13.1 // indirect
+	github.com/golangci/golangci-lint/v2 v2.10.1 // indirect
 	github.com/golangci/golines v0.15.0 // indirect
 	github.com/golangci/misspell v0.8.0 // indirect
 	github.com/golangci/plugin-module-register v0.1.2 // indirect
 	github.com/golangci/revgrep v0.8.0 // indirect
 	github.com/golangci/rowserrcheck v0.0.0-20260419091836-c5f79b8a11ba // indirect
 	github.com/golangci/swaggoswag v0.0.0-20250504205917-77f2aca3143e // indirect
 	github.com/golangci/unconvert v0.0.0-20250410112200-a129a6e6413e // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/google/wire v0.7.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.3.18 // indirect
+	github.com/googleapis/gax-go/v2 v2.17.0 // indirect
 	github.com/googleapis/gax-go/v2 v2.23.0 // indirect
 	github.com/gordonklaus/ineffassign v0.2.0 // indirect
 	github.com/gostaticanalysis/analysisutil v0.7.1 // indirect
 	github.com/gostaticanalysis/comment v1.5.0 // indirect
 	github.com/gostaticanalysis/forcetypeassert v0.2.0 // indirect
 	github.com/gostaticanalysis/nilerr v0.1.2 // indirect
 	github.com/hashicorp/go-immutable-radix/v2 v2.1.0 // indirect
-	github.com/hashicorp/go-version v1.9.0 // indirect
+	github.com/hashicorp/go-version v1.8.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hexops/gotextdiff v1.0.3 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/jgautheron/goconst v1.11.0 // indirect
+	github.com/jgautheron/goconst v1.8.2 // indirect
 	github.com/jingyugao/rowserrcheck v1.1.1 // indirect
 	github.com/jjti/go-spancheck v0.6.5 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/julz/importas v0.2.0 // indirect
 	github.com/karamaru-alpha/copyloopvar v1.2.2 // indirect
-	github.com/kisielk/errcheck v1.20.0 // indirect
+	github.com/kisielk/errcheck v1.9.0 // indirect
 	github.com/kkHAIKE/contextcheck v1.1.6 // indirect
 	github.com/klauspost/compress v1.19.2 // indirect
 	github.com/kulti/thelper v0.7.1 // indirect
 	github.com/kunwardeep/paralleltest v1.0.15 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/lasiar/canonicalheader v1.1.2 // indirect
 	github.com/ldez/exptostd v0.4.5 // indirect
-	github.com/ldez/gomoddirectives v0.9.0 // indirect
+	github.com/ldez/gomoddirectives v0.8.0 // indirect
 	github.com/ldez/grignotin v0.10.1 // indirect
 	github.com/ldez/structtags v0.6.1 // indirect
 	github.com/ldez/tagliatelle v0.7.2 // indirect
 	github.com/ldez/usetesting v0.5.0 // indirect
 	github.com/leonklingele/grouper v1.1.2 // indirect
-	github.com/lucasb-eyer/go-colorful v1.4.1 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
 	github.com/macabu/inamedparam v0.2.0 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/manuelarte/embeddedstructfieldcheck v0.4.0 // indirect
-	github.com/manuelarte/funcorder v0.6.0 // indirect
+	github.com/manuelarte/funcorder v0.5.0 // indirect
 	github.com/maratori/testableexamples v1.0.1 // indirect
 	github.com/maratori/testpackage v1.1.2 // indirect
 	github.com/matoous/godox v1.1.0 // indirect
-	github.com/mattn/go-colorable v0.1.15 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
-	github.com/mattn/go-isatty v0.0.24 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.24 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
-	github.com/mgechev/revive v1.15.0 // indirect
+	github.com/mgechev/revive v1.14.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/moricho/tparallel v0.3.2 // indirect
-	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/nakabonne/nestif v0.3.1 // indirect
 	github.com/ncruces/go-strftime v1.0.0 // indirect
 	github.com/nishanths/exhaustive v0.12.0 // indirect
 	github.com/nishanths/predeclared v0.2.2 // indirect
-	github.com/nunnatsa/ginkgolinter v0.24.0 // indirect
+	github.com/nunnatsa/ginkgolinter v0.23.0 // indirect
-	github.com/oapi-codegen/nullable v1.2.0 // indirect
+	github.com/oapi-codegen/runtime v1.2.0 // indirect
-	github.com/oapi-codegen/runtime v1.6.0 // indirect
+	github.com/pandatix/go-cvss v0.6.2 // indirect
 	github.com/package-url/packageurl-go v0.1.7 // indirect
 	github.com/pandatix/go-cvss v0.6.4 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
-	github.com/pelletier/go-toml/v2 v2.4.3 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
-	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/common v0.70.1 // indirect
+	github.com/prometheus/common v0.67.5 // indirect
-	github.com/prometheus/procfs v0.21.1 // indirect
+	github.com/prometheus/procfs v0.20.1 // indirect
 	github.com/quasilyte/go-ruleguard v0.4.5 // indirect
 	github.com/quasilyte/go-ruleguard/dsl v0.3.23 // indirect
 	github.com/quasilyte/gogrep v0.5.0 // indirect
 	github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727 // indirect
 	github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 // indirect
-	github.com/raeperd/recvcheck v0.3.0 // indirect
+	github.com/raeperd/recvcheck v0.2.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
-	github.com/rogpeppe/go-internal v1.16.0 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
 	github.com/rs/dnscache v0.0.0-20230804202142-fc85eb664529 // indirect
 	github.com/rubyist/circuitbreaker v2.2.1+incompatible // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/ryancurrah/gomodguard v1.4.1 // indirect
-	github.com/ryancurrah/gomodguard/v2 v2.1.3 // indirect
+	github.com/ryanrolds/sqlclosecheck v0.5.1 // indirect
 	github.com/ryanrolds/sqlclosecheck v0.6.0 // indirect
 	github.com/sanposhiho/wastedassign/v2 v2.1.0 // indirect
-	github.com/santhosh-tekuri/jsonschema/v6 v6.0.3 // indirect
+	github.com/santhosh-tekuri/jsonschema/v6 v6.0.2 // indirect
 	github.com/sashamelentyev/interfacebloat v1.1.0 // indirect
 	github.com/sashamelentyev/usestdlibvars v1.29.0 // indirect
-	github.com/securego/gosec/v2 v2.28.0 // indirect
+	github.com/securego/gosec/v2 v2.23.0 // indirect
-	github.com/sirupsen/logrus v1.10.1 // indirect
+	github.com/sirupsen/logrus v1.9.4 // indirect
 	github.com/sivchari/containedctx v1.0.3 // indirect
-	github.com/sonatard/noctx v0.5.1 // indirect
+	github.com/sonatard/noctx v0.4.0 // indirect
-	github.com/sourcegraph/go-diff v0.8.0 // indirect
+	github.com/sourcegraph/go-diff v0.7.0 // indirect
 	github.com/spf13/afero v1.15.0 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/cobra v1.10.2 // indirect
@ -269,20 +227,19 @@ require (
 	github.com/spf13/viper v1.12.0 // indirect
 	github.com/ssgreg/nlreturn/v2 v2.2.1 // indirect
 	github.com/stbenjam/no-sprintf-host-port v0.3.1 // indirect
-	github.com/stretchr/objx v0.5.3 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
-	github.com/stretchr/testify v1.12.1 // indirect
+	github.com/stretchr/testify v1.11.1 // indirect
 	github.com/subosito/gotenv v1.4.1 // indirect
-	github.com/tetafro/godot v1.5.6 // indirect
+	github.com/tetafro/godot v1.5.4 // indirect
-	github.com/timakin/bodyclose v0.0.0-20260129054331-73d1f95b84b4 // indirect
+	github.com/timakin/bodyclose v0.0.0-20241222091800-1db5c5ca4d67 // indirect
 	github.com/timonwong/loggercheck v0.11.0 // indirect
 	github.com/tomarrell/wrapcheck/v2 v2.12.0 // indirect
 	github.com/tommy-muehle/go-mnd/v2 v2.5.1 // indirect
-	github.com/ulikunitz/xz v0.5.16 // indirect
+	github.com/ulikunitz/xz v0.5.15 // indirect
 	github.com/ultraware/funlen v0.2.0 // indirect
 	github.com/ultraware/whitespace v0.2.0 // indirect
-	github.com/urfave/cli/v2 v2.3.0 // indirect
+	github.com/uudashr/gocognit v1.2.0 // indirect
-	github.com/uudashr/gocognit v1.2.1 // indirect
+	github.com/uudashr/iface v1.4.1 // indirect
 	github.com/uudashr/iface v1.5.0 // indirect
 	github.com/xen0n/gosmopolitan v1.3.0 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
 	github.com/yagipy/maintidx v1.0.0 // indirect
@ -290,41 +247,40 @@ require (
 	github.com/ykadowak/zerologlint v0.1.5 // indirect
 	gitlab.com/bosi/decorder v0.4.2 // indirect
 	go-simpler.org/musttag v0.14.0 // indirect
-	go-simpler.org/sloglint v0.12.0 // indirect
+	go-simpler.org/sloglint v0.11.1 // indirect
 	go.augendre.info/arangolint v0.4.0 // indirect
-	go.augendre.info/fatcontext v0.10.0 // indirect
+	go.augendre.info/fatcontext v0.9.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
-	go.opentelemetry.io/otel v1.44.0 // indirect
+	go.opentelemetry.io/otel v1.41.0 // indirect
-	go.opentelemetry.io/otel/metric v1.44.0 // indirect
+	go.opentelemetry.io/otel/metric v1.41.0 // indirect
-	go.opentelemetry.io/otel/sdk v1.44.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.41.0 // indirect
-	go.opentelemetry.io/otel/sdk/metric v1.44.0 // indirect
+	go.opentelemetry.io/otel/sdk/metric v1.41.0 // indirect
-	go.opentelemetry.io/otel/trace v1.44.0 // indirect
+	go.opentelemetry.io/otel/trace v1.41.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.27.1 // indirect
-	go.yaml.in/yaml/v2 v2.4.4 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
-	go.yaml.in/yaml/v3 v3.0.5 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/crypto v0.55.0 // indirect
 	golang.org/x/exp v0.0.0-20260218203240-3dfff04db8fa // indirect
-	golang.org/x/exp/typeparams v0.0.0-20260811152304-ee035b5b010f // indirect
+	golang.org/x/exp/typeparams v0.0.0-20260209203927-2842357ff358 // indirect
-	golang.org/x/mod v0.40.0 // indirect
+	golang.org/x/mod v0.33.0 // indirect
-	golang.org/x/net v0.58.0 // indirect
+	golang.org/x/net v0.51.0 // indirect
-	golang.org/x/oauth2 v0.36.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.47.0 // indirect
+	golang.org/x/sys v0.41.0 // indirect
-	golang.org/x/text v0.41.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
-	golang.org/x/tools v0.49.0 // indirect
+	golang.org/x/tools v0.42.0 // indirect
 	golang.org/x/xerrors v0.0.0-20240903120638-7835f813f4da // indirect
-	google.golang.org/api v0.288.0 // indirect
+	google.golang.org/api v0.269.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260706201446-f0a921348800 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260226221140-a57be14db171 // indirect
-	google.golang.org/grpc v1.83.2 // indirect
+	google.golang.org/grpc v1.79.1 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
-	honnef.co/go/tools v0.8.0 // indirect
+	honnef.co/go/tools v0.7.0 // indirect
-	modernc.org/libc v1.75.6 // indirect
+	modernc.org/libc v1.69.0 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
-	modernc.org/memory v1.12.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
-	mvdan.cc/gofumpt v0.11.0 // indirect
+	mvdan.cc/gofumpt v0.9.2 // indirect
-	mvdan.cc/unparam v0.0.0-20260818115549-3f964bcb5673 // indirect
+	mvdan.cc/unparam v0.0.0-20251027182757-5beb8c8f8f15 // indirect
 	sigs.k8s.io/yaml v1.6.0 // indirect
 )
 tool github.com/golangci/golangci-lint/v2/cmd/golangci-lint
--- a/go.sum
+++ b/go.sum
--- a/internal/accesslog/accesslog.go
+++ b/internal/accesslog/accesslog.go
@ -1,109 +0,0 @@
 // Package accesslog writes proxy activity as JSON Lines.
 package accesslog
 import (
 	"context"
 	"encoding/json"
 	"fmt"
 	"net/url"
 	"os"
 	"sync"
 	"time"
 )
 const (
 	accessLogFileMode os.FileMode = 0o600
 	// EventRequest identifies the response sent by the proxy to a client.
 	EventRequest = "request"
 	// EventUpstream identifies one HTTP exchange with an upstream service.
 	EventUpstream = "upstream"
 )
 type requestIDKey struct{}
 // Entry is one proxy activity record.
 type Entry struct {
 	Time       time.Time `json:"time"`
 	Event      string    `json:"event"`
 	RequestID  string    `json:"request_id,omitempty"`
 	Method     string    `json:"method"`
 	Path       string    `json:"path,omitempty"`
 	URL        string    `json:"url,omitempty"`
 	StatusCode int       `json:"status_code,omitempty"`
 	DurationMS int64     `json:"duration_ms"`
 	RemoteAddr string    `json:"remote_addr,omitempty"`
 	Error      string    `json:"error,omitempty"`
 }
 // Logger appends complete JSON objects to a file, one per line.
 type Logger struct {
 	mu      sync.Mutex
 	file    *os.File
 	encoder *json.Encoder
 }
 // Open opens path for append, creating it with owner-only permissions when needed.
 func Open(path string) (*Logger, error) {
 	file, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, accessLogFileMode)
 	if err != nil {
 		return nil, fmt.Errorf("opening access log: %w", err)
 	}
 	return &Logger{
 		file:    file,
 		encoder: json.NewEncoder(file),
 	}, nil
 }
 // Write appends an entry to the log.
 func (l *Logger) Write(entry Entry) error {
 	if entry.Time.IsZero() {
 		entry.Time = time.Now().UTC()
 	}
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	if err := l.encoder.Encode(entry); err != nil {
 		return fmt.Errorf("writing access log: %w", err)
 	}
 	return nil
 }
 // Close closes the log file after any active writer finishes.
 func (l *Logger) Close() error {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	if err := l.file.Close(); err != nil {
 		return fmt.Errorf("closing access log: %w", err)
 	}
 	return nil
 }
 // WithRequestID stores a proxy request ID in ctx.
 func WithRequestID(ctx context.Context, requestID string) context.Context {
 	return context.WithValue(ctx, requestIDKey{}, requestID)
 }
 // RequestID returns the proxy request ID stored in ctx.
 func RequestID(ctx context.Context) string {
 	requestID, _ := ctx.Value(requestIDKey{}).(string)
 	return requestID
 }
 // URLWithoutSecrets returns a URL without user information, query values, or fragments.
 func URLWithoutSecrets(value *url.URL) string {
 	if value == nil {
 		return ""
 	}
 	clean := *value
 	clean.User = nil
 	clean.RawQuery = ""
 	clean.ForceQuery = false
 	clean.Fragment = ""
 	clean.RawFragment = ""
 	return clean.String()
 }
--- a/internal/accesslog/accesslog_test.go
+++ b/internal/accesslog/accesslog_test.go
@ -1,91 +0,0 @@
 package accesslog
 import (
 	"bufio"
 	"context"
 	"encoding/json"
 	"net/url"
 	"os"
 	"path/filepath"
 	"sync"
 	"testing"
 )
 func TestLoggerWritesJSONLines(t *testing.T) {
 	path := filepath.Join(t.TempDir(), "access.jsonl")
 	logger, err := Open(path)
 	if err != nil {
 		t.Fatal(err)
 	}
 	const entries = 20
 	var wg sync.WaitGroup
 	for range entries {
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
 			if err := logger.Write(Entry{
 				Event:      EventUpstream,
 				RequestID:  "request-id",
 				Method:     "GET",
 				URL:        "https://registry.example/packages/example",
 				StatusCode: 429,
 			}); err != nil {
 				t.Errorf("Write: %v", err)
 			}
 		}()
 	}
 	wg.Wait()
 	if err := logger.Close(); err != nil {
 		t.Fatal(err)
 	}
 	file, err := os.Open(path)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer func() { _ = file.Close() }()
 	scanner := bufio.NewScanner(file)
 	count := 0
 	for scanner.Scan() {
 		var entry Entry
 		if err := json.Unmarshal(scanner.Bytes(), &entry); err != nil {
 			t.Fatalf("line %d is not JSON: %v", count+1, err)
 		}
 		if entry.Time.IsZero() {
 			t.Errorf("line %d has no time", count+1)
 		}
 		if entry.StatusCode != 429 {
 			t.Errorf("line %d status_code = %d, want 429", count+1, entry.StatusCode)
 		}
 		count++
 	}
 	if err := scanner.Err(); err != nil {
 		t.Fatal(err)
 	}
 	if count != entries {
 		t.Errorf("lines = %d, want %d", count, entries)
 	}
 }
 func TestRequestID(t *testing.T) {
 	ctx := WithRequestID(context.Background(), "abc-123")
 	if got := RequestID(ctx); got != "abc-123" {
 		t.Errorf("RequestID = %q, want %q", got, "abc-123")
 	}
 }
 func TestURLWithoutSecrets(t *testing.T) {
 	value, err := url.Parse("https://user:password@registry.example/package.tgz?token=secret#fragment")
 	if err != nil {
 		t.Fatal(err)
 	}
 	got := URLWithoutSecrets(value)
 	want := "https://registry.example/package.tgz"
 	if got != want {
 		t.Errorf("URLWithoutSecrets = %q, want %q", got, want)
 	}
 }
--- a/internal/config/config.go
+++ b/internal/config/config.go
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
--- a/internal/database/database.go
+++ b/internal/database/database.go
@ -4,8 +4,8 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
 	"time"
 	gitpkgsdb "github.com/git-pkgs/git-pkgs/database"
 	"github.com/jmoiron/sqlx"
 	_ "github.com/lib/pq"
 	_ "modernc.org/sqlite"
@ -13,18 +13,6 @@ import (
 const SchemaVersion = 1
 const dirPermissions = 0755
 // Postgres connection pool limits. database/sql keeps only two idle
 // connections by default, which opens a new Postgres session for almost every
 // request under load.
 const (
 	postgresMaxOpenConns    = 32
 	postgresMaxIdleConns    = 32
 	postgresConnMaxIdleTime = 5 * time.Minute
 	postgresConnMaxLifetime = 30 * time.Minute
 )
 type Dialect string
 const (
@ -42,10 +30,8 @@ func (db *DB) Dialect() Dialect {
 	return db.dialect
 }
-func Exists(path string) bool {
+// Exists checks if a database file exists at the given path.
-	_, err := os.Stat(path)
+var Exists = gitpkgsdb.Exists
 	return err == nil
 }
 func Create(path string) (*DB, error) {
 	if Exists(path) {
@ -67,29 +53,21 @@ func Create(path string) (*DB, error) {
 	return db, nil
 }
 // Open opens a SQLite database using the shared git-pkgs connection
 // settings (WAL mode, busy timeout, single connection).
 func Open(path string) (*DB, error) {
 	if dir := filepath.Dir(path); dir != "." && dir != "/" {
-		if err := os.MkdirAll(dir, dirPermissions); err != nil {
+		if err := os.MkdirAll(dir, 0755); err != nil {
 			return nil, fmt.Errorf("creating database directory: %w", err)
 		}
 	}
-	// Add busy_timeout to handle concurrent writes
+	sharedDB, err := gitpkgsdb.Open(path)
 	sqlDB, err := sqlx.Open("sqlite", path+"?_busy_timeout=5000")
 	if err != nil {
-		return nil, fmt.Errorf("opening database: %w", err)
+		return nil, err
 	}
-	// Limit connections to 1 for SQLite to serialize writes
+	return &DB{DB: sharedDB.SQLX(), dialect: DialectSQLite, path: path}, nil
 	sqlDB.SetMaxOpenConns(1)
 	db := &DB{DB: sqlDB, dialect: DialectSQLite, path: path}
 	if err := db.OptimizeForReads(); err != nil {
 		_ = sqlDB.Close()
 		return nil, fmt.Errorf("optimizing database: %w", err)
 	}
 	return db, nil
 }
 func OpenOrCreate(path string) (*DB, error) {
@ -105,11 +83,6 @@ func OpenPostgres(url string) (*DB, error) {
 		return nil, fmt.Errorf("opening postgres database: %w", err)
 	}
 	sqlDB.SetMaxOpenConns(postgresMaxOpenConns)
 	sqlDB.SetMaxIdleConns(postgresMaxIdleConns)
 	sqlDB.SetConnMaxIdleTime(postgresConnMaxIdleTime)
 	sqlDB.SetConnMaxLifetime(postgresConnMaxLifetime)
 	if err := sqlDB.Ping(); err != nil {
 		_ = sqlDB.Close()
 		return nil, fmt.Errorf("connecting to postgres: %w", err)
--- a/internal/database/database_test.go
+++ b/internal/database/database_test.go
@ -8,11 +8,6 @@ import (
 	"time"
 )
 const (
 	testContentHash = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
 	testIntegrity   = "sha512-z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg=="
 )
 func TestCreateAndOpen(t *testing.T) {
 	dir := t.TempDir()
 	dbPath := filepath.Join(dir, "test.db")
@ -137,7 +132,7 @@ func TestVersionCRUD(t *testing.T) {
 		v := &Version{
 			PURL:        "pkg:npm/lodash@4.17.21",
 			PackagePURL: "pkg:npm/lodash",
-			Integrity:   sql.NullString{String: testIntegrity, Valid: true},
+			Integrity:   sql.NullString{String: "sha512-abc123", Valid: true},
 		}
 		err = db.UpsertVersion(v)
@ -152,8 +147,8 @@ func TestVersionCRUD(t *testing.T) {
 		if got == nil {
 			t.Fatal("expected version, got nil")
 		}
-		if got.Version() != "4.17.21" {
+		if got.VersionString() != "4.17.21" {
-			t.Errorf("expected version 4.17.21, got %s", got.Version())
+			t.Errorf("expected version 4.17.21, got %s", got.VersionString())
 		}
 		versions, err := db.GetVersionsByPackagePURL("pkg:npm/lodash")
@ -205,7 +200,7 @@ func TestArtifactCRUD(t *testing.T) {
 			t.Error("expected artifact to not be cached yet")
 		}
-		err = db.MarkArtifactCached(versionPURL, "lodash-4.17.21.tgz", "/cache/npm/lodash-4.17.21.tgz", testContentHash, 12345, "application/gzip")
+		err = db.MarkArtifactCached(versionPURL, "lodash-4.17.21.tgz", "/cache/npm/lodash-4.17.21.tgz", "sha256-abc", 12345, "application/gzip")
 		if err != nil {
 			t.Fatalf("MarkArtifactCached failed: %v", err)
 		}
@ -244,92 +239,6 @@ func TestArtifactCRUD(t *testing.T) {
 	})
 }
 func TestGetCachedArtifact(t *testing.T) {
 	runWithBothDatabases(t, func(t *testing.T, db *DB) {
 		const (
 			packagePURL = "pkg:npm/lodash"
 			versionPURL = "pkg:npm/lodash@4.17.21"
 			filename    = "lodash-4.17.21.tgz"
 		)
 		seedCachedArtifactTestData(t, db, packagePURL, versionPURL, filename)
 		cached, err := db.GetCachedArtifact(packagePURL, versionPURL, filename)
 		if err != nil {
 			t.Fatalf("GetCachedArtifact before cache failed: %v", err)
 		}
 		if cached != nil {
 			t.Fatalf("expected no cached artifact, got %+v", cached)
 		}
 		if err := db.MarkArtifactCached(versionPURL, filename, "/cache/npm/"+filename,
 			testContentHash, 12345, "application/gzip"); err != nil {
 			t.Fatalf("MarkArtifactCached failed: %v", err)
 		}
 		cached, err = db.GetCachedArtifact(packagePURL, versionPURL, filename)
 		if err != nil {
 			t.Fatalf("GetCachedArtifact failed: %v", err)
 		}
 		if cached == nil {
 			t.Fatal("expected cached artifact, got nil")
 		}
 		if cached.Ecosystem != "npm" {
 			t.Errorf("expected npm ecosystem, got %q", cached.Ecosystem)
 		}
 		if cached.StoragePath != "/cache/npm/"+filename {
 			t.Errorf("expected cached storage path, got %q", cached.StoragePath)
 		}
 		if cached.Artifact.PURL != versionPURL {
 			t.Errorf("expected cached PURL %q, got %q", versionPURL, cached.Artifact.PURL)
 		}
 		if cached.Artifact.Digest.String() != "sha256:"+testContentHash {
 			t.Errorf("expected cached digest, got %q", cached.Artifact.Digest)
 		}
 		if cached.Artifact.Size != 12345 {
 			t.Errorf("expected cached size 12345, got %d", cached.Artifact.Size)
 		}
 		if cached.Artifact.Filename != filename {
 			t.Errorf("expected cached filename %q, got %q", filename, cached.Artifact.Filename)
 		}
 		if cached.Artifact.MediaType != "application/gzip" {
 			t.Errorf("expected cached content type, got %q", cached.Artifact.MediaType)
 		}
 		if cached.Integrity.String != testIntegrity {
 			t.Errorf("expected cached integrity, got %q", cached.Integrity.String)
 		}
 		cached, err = db.GetCachedArtifact("pkg:npm/other", versionPURL, filename)
 		if err != nil {
 			t.Fatalf("GetCachedArtifact with wrong package failed: %v", err)
 		}
 		if cached != nil {
 			t.Fatalf("expected package mismatch to miss cache, got %+v", cached)
 		}
 	})
 }
 func seedCachedArtifactTestData(t *testing.T, db *DB, packagePURL, versionPURL, filename string) {
 	t.Helper()
 	if err := db.UpsertPackage(&Package{PURL: packagePURL, Ecosystem: "npm", Name: "lodash"}); err != nil {
 		t.Fatalf("UpsertPackage failed: %v", err)
 	}
 	if err := db.UpsertVersion(&Version{
 		PURL:        versionPURL,
 		PackagePURL: packagePURL,
 		Integrity:   sql.NullString{String: testIntegrity, Valid: true},
 	}); err != nil {
 		t.Fatalf("UpsertVersion failed: %v", err)
 	}
 	if err := db.UpsertArtifact(&Artifact{
 		VersionPURL: versionPURL,
 		Filename:    filename,
 		UpstreamURL: "https://registry.npmjs.org/lodash/-/" + filename,
 	}); err != nil {
 		t.Fatalf("UpsertArtifact failed: %v", err)
 	}
 }
 func TestCacheManagement(t *testing.T) {
 	runWithBothDatabases(t, func(t *testing.T, db *DB) {
 		pkg := &Package{
@ -610,10 +519,8 @@ func createTestPostgresDB(t *testing.T) *DB {
 		t.Fatalf("OpenPostgres failed: %v", err)
 	}
-	// Drop and recreate every table CreateSchema creates for clean test state;
+	// Drop and recreate tables for clean test state
-	// leftover migration records make the next CreateSchema fail on the
+	tables := []string{"artifacts", "versions", "packages", "schema_info"}
 	// migrations primary key.
 	tables := []string{"artifacts", "versions", "packages", "vulnerabilities", "metadata_cache", "migrations", "schema_info"}
 	for _, table := range tables {
 		_, _ = db.Exec("DROP TABLE IF EXISTS " + table + " CASCADE")
 	}
@ -744,159 +651,58 @@ func TestMigrationFromOldSchema(t *testing.T) {
 	}
 	defer func() { _ = db.Close() }()
-	// Queries that require new columns should fail without migration
+	// Try to run queries that require new columns - these should fail without migration
-	if _, err := db.GetEnrichmentStats(); err == nil {
+	t.Run("queries should fail without migration", func(t *testing.T) {
-		t.Error("GetEnrichmentStats: expected error querying enriched_at column, got nil")
+		_, err := db.GetEnrichmentStats()
-	}
+		if err == nil {
-	if _, err := db.GetPackageByEcosystemName("npm", "test-package"); err == nil {
+			t.Error("GetEnrichmentStats: expected error querying enriched_at column, got nil")
-		t.Error("GetPackageByEcosystemName: expected error querying registry_url column, got nil")
+		}
-	}
+
-	// SearchPackages should work even with old schema because it uses sql.NullString
+		_, err = db.GetPackageByEcosystemName("npm", "test-package")
-	if _, err := db.SearchPackages("test", "", 10, 0); err != nil {
+		if err == nil {
-		t.Errorf("SearchPackages: unexpected error with old schema: %v", err)
+			t.Error("GetPackageByEcosystemName: expected error querying registry_url column, got nil")
-	}
+		}
 		// SearchPackages should work even with old schema because it uses sql.NullString
 		// for nullable columns, which can handle NULL values properly
 		_, err = db.SearchPackages("test", "", 10, 0)
 		if err != nil {
 			t.Errorf("SearchPackages: unexpected error with old schema: %v", err)
 		}
 	})
 	// Run migration
-	if err := db.MigrateSchema(); err != nil {
+	t.Run("migrate schema", func(t *testing.T) {
-		t.Fatalf("MigrateSchema failed: %v", err)
+		if err := db.MigrateSchema(); err != nil {
-	}
+			t.Fatalf("MigrateSchema failed: %v", err)
 		}
 	})
 	// Verify queries work after migration
-	stats, err := db.GetEnrichmentStats()
+	t.Run("queries should work after migration", func(t *testing.T) {
-	if err != nil {
+		stats, err := db.GetEnrichmentStats()
-		t.Errorf("GetEnrichmentStats failed after migration: %v", err)
+		if err != nil {
-	}
+			t.Errorf("GetEnrichmentStats failed after migration: %v", err)
 	if stats == nil {
 		t.Error("GetEnrichmentStats returned nil after migration")
 	}
 	pkg, err := db.GetPackageByEcosystemName("npm", "test-package")
 	if err != nil {
 		t.Errorf("GetPackageByEcosystemName failed after migration: %v", err)
 	}
 	if pkg == nil {
 		t.Fatal("GetPackageByEcosystemName returned nil after migration")
 	}
 	if pkg.Name != "test-package" {
 		t.Errorf("expected package name test-package, got %s", pkg.Name)
 	}
 	// Verify migrations were recorded
 	applied, err := db.appliedMigrations()
 	if err != nil {
 		t.Fatalf("appliedMigrations failed: %v", err)
 	}
 	for _, m := range migrations {
 		if !applied[m.name] {
 			t.Errorf("migration %s not recorded as applied", m.name)
 		}
-	}
+		if stats == nil {
-
+			t.Error("GetEnrichmentStats returned nil after migration")
 	// Running again should be a no-op
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("second MigrateSchema failed: %v", err)
 	}
 }
 func TestFreshDatabaseRecordsMigrations(t *testing.T) {
 	dir := t.TempDir()
 	dbPath := filepath.Join(dir, "fresh.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	applied, err := db.appliedMigrations()
 	if err != nil {
 		t.Fatalf("appliedMigrations failed: %v", err)
 	}
 	for _, m := range migrations {
 		if !applied[m.name] {
 			t.Errorf("migration %s not recorded in fresh database", m.name)
 		}
 	}
 }
-func TestMigrateSchemaSkipsApplied(t *testing.T) {
+		pkg, err := db.GetPackageByEcosystemName("npm", "test-package")
-	dir := t.TempDir()
+		if err != nil {
-	dbPath := filepath.Join(dir, "test.db")
+			t.Errorf("GetPackageByEcosystemName failed after migration: %v", err)
-
+		}
-	db, err := Create(dbPath)
+		if pkg == nil {
-	if err != nil {
+			t.Fatal("GetPackageByEcosystemName returned nil after migration")
-		t.Fatalf("Create failed: %v", err)
+		}
-	}
+		if pkg.Name != "test-package" {
-	defer func() { _ = db.Close() }()
+			t.Errorf("expected package name test-package, got %s", pkg.Name)
 	// All migrations are already recorded from Create. Running MigrateSchema
 	// should return without running any migration functions.
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema failed: %v", err)
 	}
 	// Verify count hasn't changed (no duplicate inserts)
 	var count int
 	if err := db.Get(&count, "SELECT COUNT(*) FROM migrations"); err != nil {
 		t.Fatalf("counting migrations failed: %v", err)
 	}
 	if count != len(migrations) {
 		t.Errorf("expected %d migrations, got %d", len(migrations), count)
 	}
 }
 func TestMigrateSchemaUpgradeFromFullyMigrated(t *testing.T) {
 	dir := t.TempDir()
 	dbPath := filepath.Join(dir, "existing.db")
 	// Simulate an existing proxy database that has the full current schema
 	// but no migrations table (i.e. it was running the previous version).
 	sqlDB, err := sql.Open("sqlite", dbPath)
 	if err != nil {
 		t.Fatalf("failed to open database: %v", err)
 	}
 	if _, err := sqlDB.Exec(schemaSQLite); err != nil {
 		t.Fatalf("failed to create schema: %v", err)
 	}
 	// Drop the migrations table that schemaSQLite now includes
 	if _, err := sqlDB.Exec("DROP TABLE migrations"); err != nil {
 		t.Fatalf("failed to drop migrations table: %v", err)
 	}
 	if _, err := sqlDB.Exec("INSERT INTO schema_info (version) VALUES (1)"); err != nil {
 		t.Fatalf("failed to set schema version: %v", err)
 	}
 	if err := sqlDB.Close(); err != nil {
 		t.Fatalf("failed to close database: %v", err)
 	}
 	db, err := Open(dbPath)
 	if err != nil {
 		t.Fatalf("Open failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	// This should create the migrations table and record all migrations
 	// without altering any tables (everything already exists).
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema failed: %v", err)
 	}
 	applied, err := db.appliedMigrations()
 	if err != nil {
 		t.Fatalf("appliedMigrations failed: %v", err)
 	}
 	for _, m := range migrations {
 		if !applied[m.name] {
 			t.Errorf("migration %s not recorded after upgrade", m.name)
 		}
 	}
-	// Second run should be the fast path (single SELECT)
+		// Note: SearchPackages not tested here because old timestamp data
-	if err := db.MigrateSchema(); err != nil {
+		// stored as strings can't be scanned into time.Time. This is a data
-		t.Fatalf("second MigrateSchema failed: %v", err)
+		// migration issue, not a schema migration issue.
-	}
+	})
 }
 func TestConcurrentWrites(t *testing.T) {
@ -1084,79 +890,3 @@ func TestSearchPackagesWithValues(t *testing.T) {
 		t.Errorf("expected 10 hits, got %d", result.Hits)
 	}
 }
 func BenchmarkMigrateSchemaFullyMigrated(b *testing.B) {
 	dir := b.TempDir()
 	dbPath := filepath.Join(dir, "bench.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		b.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	// First call to ensure everything is migrated
 	if err := db.MigrateSchema(); err != nil {
 		b.Fatalf("initial MigrateSchema failed: %v", err)
 	}
 	b.ResetTimer()
 	for b.Loop() {
 		if err := db.MigrateSchema(); err != nil {
 			b.Fatalf("MigrateSchema failed: %v", err)
 		}
 	}
 }
 func TestVersionPublishedAtPreserved(t *testing.T) {
 	runWithBothDatabases(t, func(t *testing.T, db *DB) {
 		publishedAt := time.Date(2020, 1, 2, 3, 4, 5, 0, time.UTC)
 		if err := db.SetVersionPublishedAt("pkg:npm/leftpad@1.0.0", "pkg:npm/leftpad", publishedAt); err != nil {
 			t.Fatalf("SetVersionPublishedAt failed: %v", err)
 		}
 		got, err := db.GetVersionByPURL("pkg:npm/leftpad@1.0.0")
 		if err != nil || got == nil {
 			t.Fatalf("GetVersionByPURL failed: %v", err)
 		}
 		if !got.PublishedAt.Valid || !got.PublishedAt.Time.Equal(publishedAt) {
 			t.Fatalf("PublishedAt = %v, want %v", got.PublishedAt, publishedAt)
 		}
 		// An upsert that carries no publish time (the artifact cache path)
 		// must not erase the stored value.
 		if err := db.UpsertVersion(&Version{
 			PURL:        "pkg:npm/leftpad@1.0.0",
 			PackagePURL: "pkg:npm/leftpad",
 		}); err != nil {
 			t.Fatalf("UpsertVersion failed: %v", err)
 		}
 		got, err = db.GetVersionByPURL("pkg:npm/leftpad@1.0.0")
 		if err != nil || got == nil {
 			t.Fatalf("GetVersionByPURL after upsert failed: %v", err)
 		}
 		if !got.PublishedAt.Valid || !got.PublishedAt.Time.Equal(publishedAt) {
 			t.Fatalf("PublishedAt after null upsert = %v, want %v preserved", got.PublishedAt, publishedAt)
 		}
 		// An upsert that does carry a publish time still updates it.
 		later := publishedAt.Add(24 * time.Hour)
 		if err := db.UpsertVersion(&Version{
 			PURL:        "pkg:npm/leftpad@1.0.0",
 			PackagePURL: "pkg:npm/leftpad",
 			PublishedAt: sql.NullTime{Time: later, Valid: true},
 		}); err != nil {
 			t.Fatalf("UpsertVersion with publish time failed: %v", err)
 		}
 		got, err = db.GetVersionByPURL("pkg:npm/leftpad@1.0.0")
 		if err != nil || got == nil {
 			t.Fatalf("GetVersionByPURL after second upsert failed: %v", err)
 		}
 		if !got.PublishedAt.Valid || !got.PublishedAt.Time.Equal(later) {
 			t.Fatalf("PublishedAt after valued upsert = %v, want %v", got.PublishedAt, later)
 		}
 	})
 }
--- a/internal/database/metadata_cache_test.go
+++ b/internal/database/metadata_cache_test.go
@ -1,364 +0,0 @@
 package database
 import (
 	"database/sql"
 	"path/filepath"
 	"testing"
 	"time"
 )
 func setupMetadataCacheDB(t *testing.T) *DB {
 	t.Helper()
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema failed: %v", err)
 	}
 	t.Cleanup(func() { _ = db.Close() })
 	return db
 }
 func TestUpsertAndGetMetadataCache(t *testing.T) {
 	db := setupMetadataCacheDB(t)
 	entry := &MetadataCacheEntry{
 		Ecosystem:   testEcosystemNPM,
 		Name:        "lodash",
 		StoragePath: "_metadata/npm/lodash/metadata",
 		ETag:        sql.NullString{String: `"abc123"`, Valid: true},
 		Link:        sql.NullString{String: `<https://registry.example.test/next>; rel="next"`, Valid: true},
 		ContentType: sql.NullString{String: "application/json", Valid: true},
 		ContentDigest: sql.NullString{
 			String: "sha256:0123456789abcdef",
 			Valid:  true,
 		},
 		Size:      sql.NullInt64{Int64: 1024, Valid: true},
 		FetchedAt: sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	err := db.UpsertMetadataCache(entry)
 	if err != nil {
 		t.Fatalf("UpsertMetadataCache() error = %v", err)
 	}
 	got, err := db.GetMetadataCache(testEcosystemNPM, "lodash")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if got == nil {
 		t.Fatal("GetMetadataCache() returned nil")
 	}
 	if got.Ecosystem != testEcosystemNPM {
 		t.Errorf("ecosystem = %q, want %q", got.Ecosystem, testEcosystemNPM)
 	}
 	if got.Name != "lodash" {
 		t.Errorf("name = %q, want %q", got.Name, "lodash")
 	}
 	if got.StoragePath != "_metadata/npm/lodash/metadata" {
 		t.Errorf("storage_path = %q, want %q", got.StoragePath, "_metadata/npm/lodash/metadata")
 	}
 	if !got.ETag.Valid || got.ETag.String != `"abc123"` {
 		t.Errorf("etag = %v, want %q", got.ETag, `"abc123"`)
 	}
 	if !got.Link.Valid || got.Link.String != `<https://registry.example.test/next>; rel="next"` {
 		t.Errorf("link = %v, want next link", got.Link)
 	}
 	if !got.ContentType.Valid || got.ContentType.String != "application/json" {
 		t.Errorf("content_type = %v, want %q", got.ContentType, "application/json")
 	}
 	if !got.ContentDigest.Valid || got.ContentDigest.String != "sha256:0123456789abcdef" {
 		t.Errorf("content_digest = %v, want %q", got.ContentDigest, "sha256:0123456789abcdef")
 	}
 	if !got.Size.Valid || got.Size.Int64 != 1024 {
 		t.Errorf("size = %v, want 1024", got.Size)
 	}
 }
 func TestGetMetadataCacheMiss(t *testing.T) {
 	db := setupMetadataCacheDB(t)
 	got, err := db.GetMetadataCache(testEcosystemNPM, "nonexistent")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if got != nil {
 		t.Errorf("expected nil for cache miss, got %v", got)
 	}
 }
 func TestUpsertMetadataCacheOverwrite(t *testing.T) {
 	db := setupMetadataCacheDB(t)
 	// First insert
 	entry1 := &MetadataCacheEntry{
 		Ecosystem:   testEcosystemNPM,
 		Name:        "lodash",
 		StoragePath: "_metadata/npm/lodash/metadata",
 		ETag:        sql.NullString{String: `"v1"`, Valid: true},
 		ContentType: sql.NullString{String: "application/json", Valid: true},
 		Size:        sql.NullInt64{Int64: 100, Valid: true},
 		FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	if err := db.UpsertMetadataCache(entry1); err != nil {
 		t.Fatalf("first UpsertMetadataCache() error = %v", err)
 	}
 	// Second insert (same ecosystem+name, different etag and size)
 	entry2 := &MetadataCacheEntry{
 		Ecosystem:   testEcosystemNPM,
 		Name:        "lodash",
 		StoragePath: "_metadata/npm/lodash/metadata",
 		ETag:        sql.NullString{String: `"v2"`, Valid: true},
 		ContentType: sql.NullString{String: "application/json", Valid: true},
 		Size:        sql.NullInt64{Int64: 200, Valid: true},
 		FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	if err := db.UpsertMetadataCache(entry2); err != nil {
 		t.Fatalf("second UpsertMetadataCache() error = %v", err)
 	}
 	got, err := db.GetMetadataCache(testEcosystemNPM, "lodash")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if got == nil {
 		t.Fatal("expected entry after overwrite")
 	}
 	if got.ETag.String != `"v2"` {
 		t.Errorf("etag = %q, want %q", got.ETag.String, `"v2"`)
 	}
 	if got.Size.Int64 != 200 {
 		t.Errorf("size = %d, want 200", got.Size.Int64)
 	}
 }
 func TestUpsertMetadataCacheNullableFields(t *testing.T) {
 	db := setupMetadataCacheDB(t)
 	entry := &MetadataCacheEntry{
 		Ecosystem:   "pypi",
 		Name:        "requests",
 		StoragePath: "_metadata/pypi/requests/metadata",
 	}
 	if err := db.UpsertMetadataCache(entry); err != nil {
 		t.Fatalf("UpsertMetadataCache() error = %v", err)
 	}
 	got, err := db.GetMetadataCache("pypi", "requests")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if got == nil {
 		t.Fatal("expected entry")
 	}
 	if got.ETag.Valid {
 		t.Error("expected null etag")
 	}
 	if got.ContentType.Valid {
 		t.Error("expected null content_type")
 	}
 	if got.Link.Valid {
 		t.Error("expected null link")
 	}
 	if got.Size.Valid {
 		t.Error("expected null size")
 	}
 }
 func TestMetadataCacheTableCreatedByMigration(t *testing.T) {
 	// Create a DB without the metadata_cache table, then migrate
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	// MigrateSchema should create the metadata_cache table
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema() error = %v", err)
 	}
 	has, err := db.HasTable("metadata_cache")
 	if err != nil {
 		t.Fatalf("HasTable() error = %v", err)
 	}
 	if !has {
 		t.Error("metadata_cache table should exist after migration")
 	}
 }
 func TestMetadataCacheContentDigestMigrationPreservesExistingRows(t *testing.T) {
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	if _, err := db.Exec("ALTER TABLE metadata_cache DROP COLUMN content_digest"); err != nil {
 		t.Fatalf("dropping content_digest: %v", err)
 	}
 	if _, err := db.Exec("DELETE FROM migrations WHERE name = ?", "006_add_metadata_content_digest"); err != nil {
 		t.Fatalf("resetting digest migration: %v", err)
 	}
 	if _, err := db.Exec(`
 		INSERT INTO metadata_cache (ecosystem, name, storage_path, content_type, size, fetched_at, created_at, updated_at)
 		VALUES (?, ?, ?, ?, ?, ?, ?, ?)
 	`, "oci-manifest", "cache-key", "_metadata/oci-manifest/cache-key/metadata", "application/json", 2, time.Now(), time.Now(), time.Now()); err != nil {
 		t.Fatalf("inserting legacy cache row: %v", err)
 	}
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema() error = %v", err)
 	}
 	hasDigest, err := db.HasColumn("metadata_cache", "content_digest")
 	if err != nil {
 		t.Fatalf("HasColumn() error = %v", err)
 	}
 	if !hasDigest {
 		t.Fatal("metadata_cache.content_digest was not added")
 	}
 	entry, err := db.GetMetadataCache("oci-manifest", "cache-key")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if entry == nil || entry.StoragePath != "_metadata/oci-manifest/cache-key/metadata" {
 		t.Fatalf("existing metadata cache row was not preserved: %#v", entry)
 	}
 	if entry.ContentDigest.Valid {
 		t.Errorf("legacy content digest = %q, want NULL", entry.ContentDigest.String)
 	}
 }
 func TestMetadataCacheLinkMigrationPreservesExistingRows(t *testing.T) {
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	if _, err := db.Exec("ALTER TABLE metadata_cache DROP COLUMN link"); err != nil {
 		t.Fatalf("dropping link: %v", err)
 	}
 	if _, err := db.Exec("DELETE FROM migrations WHERE name = ?", "007_add_metadata_link"); err != nil {
 		t.Fatalf("resetting link migration: %v", err)
 	}
 	if _, err := db.Exec(`
 		INSERT INTO metadata_cache (ecosystem, name, storage_path, content_type, size, fetched_at, created_at, updated_at)
 		VALUES (?, ?, ?, ?, ?, ?, ?, ?)
 	`, "oci-tags", "cache-key", "_metadata/oci-tags/cache-key/metadata", "application/json", 2, time.Now(), time.Now(), time.Now()); err != nil {
 		t.Fatalf("inserting legacy cache row: %v", err)
 	}
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema() error = %v", err)
 	}
 	hasLink, err := db.HasColumn("metadata_cache", "link")
 	if err != nil {
 		t.Fatalf("HasColumn() error = %v", err)
 	}
 	if !hasLink {
 		t.Fatal("metadata_cache.link was not added")
 	}
 	entry, err := db.GetMetadataCache("oci-tags", "cache-key")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if entry == nil || entry.StoragePath != "_metadata/oci-tags/cache-key/metadata" {
 		t.Fatalf("existing metadata cache row was not preserved: %#v", entry)
 	}
 	if entry.Link.Valid {
 		t.Errorf("legacy link = %q, want NULL", entry.Link.String)
 	}
 }
 func TestMetadataCacheContentEncodingMigrationPreservesExistingRows(t *testing.T) {
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	if _, err := db.Exec("ALTER TABLE metadata_cache DROP COLUMN content_encoding"); err != nil {
 		t.Fatalf("dropping content_encoding: %v", err)
 	}
 	if _, err := db.Exec("DELETE FROM migrations WHERE name = ?", "008_add_metadata_content_encoding"); err != nil {
 		t.Fatalf("resetting content_encoding migration: %v", err)
 	}
 	if _, err := db.Exec(`
 		INSERT INTO metadata_cache (ecosystem, name, storage_path, etag, content_type, size, fetched_at, created_at, updated_at)
 		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
 	`, "apk", "cache-key", "_metadata/apk/cache-key/metadata", "\"legacy-etag\"", "application/octet-stream", 2, time.Now(), time.Now(), time.Now()); err != nil {
 		t.Fatalf("inserting legacy cache row: %v", err)
 	}
 	if err := db.MigrateSchema(); err != nil {
 		t.Fatalf("MigrateSchema() error = %v", err)
 	}
 	hasEncoding, err := db.HasColumn("metadata_cache", "content_encoding")
 	if err != nil {
 		t.Fatalf("HasColumn() error = %v", err)
 	}
 	if !hasEncoding {
 		t.Fatal("metadata_cache.content_encoding was not added")
 	}
 	entry, err := db.GetMetadataCache("apk", "cache-key")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if entry == nil || entry.StoragePath != "_metadata/apk/cache-key/metadata" {
 		t.Fatalf("existing metadata cache row was not preserved: %#v", entry)
 	}
 	if entry.ContentEncoding.Valid {
 		t.Errorf("legacy content encoding = %q, want NULL", entry.ContentEncoding.String)
 	}
 	// The migration must clear the pre-fix validators so the row is refetched
 	// once with identity instead of a 304 re-serving the decompressed copy.
 	if entry.ETag.Valid {
 		t.Errorf("legacy etag = %q, want cleared", entry.ETag.String)
 	}
 	if entry.FetchedAt.Valid {
 		t.Errorf("legacy fetched_at = %v, want cleared", entry.FetchedAt.Time)
 	}
 }
 func TestMetadataCacheRoundTripsContentEncoding(t *testing.T) {
 	dbPath := filepath.Join(t.TempDir(), "test.db")
 	db, err := Create(dbPath)
 	if err != nil {
 		t.Fatalf("Create failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	entry := &MetadataCacheEntry{
 		Ecosystem:       "apk",
 		Name:            "index-key",
 		StoragePath:     "_metadata/apk/index-key/metadata",
 		ContentType:     sql.NullString{String: "application/octet-stream", Valid: true},
 		ContentEncoding: sql.NullString{String: "gzip", Valid: true},
 		Size:            sql.NullInt64{Int64: 10, Valid: true},
 		FetchedAt:       sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	if err := db.UpsertMetadataCache(entry); err != nil {
 		t.Fatalf("UpsertMetadataCache() error = %v", err)
 	}
 	got, err := db.GetMetadataCache("apk", "index-key")
 	if err != nil {
 		t.Fatalf("GetMetadataCache() error = %v", err)
 	}
 	if got == nil || !got.ContentEncoding.Valid || got.ContentEncoding.String != "gzip" {
 		t.Fatalf("content encoding round-trip failed: %#v", got)
 	}
 }
--- a/internal/database/postgres_pool_test.go
+++ b/internal/database/postgres_pool_test.go
@ -1,57 +0,0 @@
 package database
 import (
 	"context"
 	"database/sql"
 	"os"
 	"testing"
 )
 // TestOpenPostgresKeepsConnectionsIdle checks the connection-count limits
 // OpenPostgres sets: the open cap admits a burst of postgresMaxIdleConns
 // connections, and releasing them again leaves all of them idle in the pool.
 // database/sql's default keeps only two, so the next burst would open a new
 // Postgres session for almost every request. The idle-time and lifetime
 // settings are not exercised here.
 func TestOpenPostgresKeepsConnectionsIdle(t *testing.T) {
 	url := os.Getenv("PROXY_DATABASE_URL")
 	if url == "" {
 		t.Skip("PROXY_DATABASE_URL not set, skipping postgres pool test")
 	}
 	db, err := OpenPostgres(url)
 	if err != nil {
 		t.Fatalf("OpenPostgres failed: %v", err)
 	}
 	defer func() { _ = db.Close() }()
 	const burst = postgresMaxIdleConns
 	// database/sql keeps two idle connections by default; a burst that small
 	// could not tell the tuned pool from the default one.
 	if burst <= 2 {
 		t.Fatalf("postgresMaxIdleConns = %d, want more than database/sql's default of 2", burst)
 	}
 	if got := db.Stats().MaxOpenConnections; got <= 0 || got < burst {
 		t.Fatalf("MaxOpenConnections = %d, want a cap of at least %d", got, burst)
 	}
 	conns := make([]*sql.Conn, 0, burst)
 	for range burst {
 		conn, err := db.Conn(context.Background())
 		if err != nil {
 			t.Fatalf("taking connection %d: %v", len(conns)+1, err)
 		}
 		t.Cleanup(func() { _ = conn.Close() }) // release the session if an assertion below fails
 		conns = append(conns, conn)
 	}
 	if got := db.Stats().InUse; got != burst {
 		t.Fatalf("InUse = %d while holding %d connections", got, burst)
 	}
 	for _, conn := range conns {
 		_ = conn.Close()
 	}
 	if got := db.Stats().Idle; got != burst {
 		t.Errorf("Idle = %d after releasing %d connections, want all of them kept", got, burst)
 	}
 }
--- a/internal/database/queries.go
+++ b/internal/database/queries.go
@ -4,9 +4,6 @@ import (
 	"database/sql"
 	"fmt"
 	"time"
 	"github.com/git-pkgs/artifacts"
 	"github.com/opencontainers/go-digest"
 )
 // Package queries
@ -144,7 +141,7 @@ func (db *DB) UpsertVersion(v *Version) error {
 			ON CONFLICT(purl) DO UPDATE SET
 				license = EXCLUDED.license,
 				integrity = EXCLUDED.integrity,
-				published_at = COALESCE(EXCLUDED.published_at, versions.published_at),
+				published_at = EXCLUDED.published_at,
 				yanked = EXCLUDED.yanked,
 				enriched_at = EXCLUDED.enriched_at,
 				updated_at = EXCLUDED.updated_at
@ -157,7 +154,7 @@ func (db *DB) UpsertVersion(v *Version) error {
 			ON CONFLICT(purl) DO UPDATE SET
 				license = excluded.license,
 				integrity = excluded.integrity,
-				published_at = COALESCE(excluded.published_at, published_at),
+				published_at = excluded.published_at,
 				yanked = excluded.yanked,
 				enriched_at = excluded.enriched_at,
 				updated_at = excluded.updated_at
@ -174,38 +171,6 @@ func (db *DB) UpsertVersion(v *Version) error {
 	return nil
 }
 // SetVersionPublishedAt records a version's publish time, creating the
 // versions row if the proxy has not seen the version yet. It only writes
 // published_at, so it never disturbs enrichment data on an existing row.
 func (db *DB) SetVersionPublishedAt(versionPURL, packagePURL string, publishedAt time.Time) error {
 	now := time.Now()
 	var query string
 	if db.dialect == DialectPostgres {
 		query = `
 			INSERT INTO versions (purl, package_purl, published_at, created_at, updated_at)
 			VALUES ($1, $2, $3, $4, $5)
 			ON CONFLICT(purl) DO UPDATE SET
 				published_at = EXCLUDED.published_at,
 				updated_at = EXCLUDED.updated_at
 		`
 	} else {
 		query = `
 			INSERT INTO versions (purl, package_purl, published_at, created_at, updated_at)
 			VALUES (?, ?, ?, ?, ?)
 			ON CONFLICT(purl) DO UPDATE SET
 				published_at = excluded.published_at,
 				updated_at = excluded.updated_at
 		`
 	}
 	_, err := db.Exec(query, versionPURL, packagePURL, publishedAt, now, now)
 	if err != nil {
 		return fmt.Errorf("setting version publish time: %w", err)
 	}
 	return nil
 }
 // Artifact queries
 func (db *DB) GetArtifact(versionPURL, filename string) (*Artifact, error) {
@ -226,56 +191,6 @@ func (db *DB) GetArtifact(versionPURL, filename string) (*Artifact, error) {
 	return &a, nil
 }
 // GetCachedArtifact returns the fields needed to serve a cached artifact.
 func (db *DB) GetCachedArtifact(packagePURL, versionPURL, filename string) (*CachedArtifact, error) {
 	var row cachedArtifactRow
 	query := db.Rebind(`
 		SELECT packages.ecosystem, artifacts.storage_path, artifacts.content_hash, artifacts.size,
 		       artifacts.content_type, versions.integrity
 		FROM artifacts
 		JOIN versions ON versions.purl = artifacts.version_purl
 		JOIN packages ON packages.purl = versions.package_purl
 		WHERE packages.purl = ? AND artifacts.version_purl = ? AND artifacts.filename = ?
 		  AND artifacts.storage_path IS NOT NULL AND artifacts.fetched_at IS NOT NULL
 	`)
 	err := db.Get(&row, query, packagePURL, versionPURL, filename)
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
 	if err != nil {
 		return nil, err
 	}
 	return row.artifact(versionPURL, filename), nil
 }
 type cachedArtifactRow struct {
 	Ecosystem   string         `db:"ecosystem"`
 	StoragePath string         `db:"storage_path"`
 	ContentHash sql.NullString `db:"content_hash"`
 	Size        sql.NullInt64  `db:"size"`
 	ContentType sql.NullString `db:"content_type"`
 	Integrity   sql.NullString `db:"integrity"`
 }
 // artifact converts a cached artifact row to a CachedArtifact without
 // validation. A malformed hash or integrity value is handled by
 // checkCache, which clears the record and treats the request as a cache
 // miss so the client is served a fresh fetch instead of an error.
 func (row cachedArtifactRow) artifact(versionPURL, filename string) *CachedArtifact {
 	return &CachedArtifact{
 		Ecosystem:   row.Ecosystem,
 		StoragePath: row.StoragePath,
 		Integrity:   row.Integrity,
 		Artifact: artifacts.Artifact{
 			PURL:      versionPURL,
 			Digest:    digest.Digest("sha256:" + row.ContentHash.String),
 			Size:      row.Size.Int64,
 			Filename:  filename,
 			MediaType: row.ContentType.String,
 		},
 	}
 }
 func (db *DB) GetArtifactByPath(storagePath string) (*Artifact, error) {
 	var a Artifact
 	query := db.Rebind(`
@ -528,14 +443,11 @@ func (db *DB) GetMostPopularPackages(limit int) ([]PopularPackage, error) {
 }
 type RecentPackage struct {
-	Ecosystem   string    `db:"ecosystem"`
+	Ecosystem string    `db:"ecosystem"`
-	Name        string    `db:"name"`
+	Name      string    `db:"name"`
-	VersionPURL string    `db:"version_purl"`
+	Version   string    `db:"version"`
-	CachedAt    time.Time `db:"fetched_at"`
+	CachedAt  time.Time `db:"fetched_at"`
-	Size        int64     `db:"size"`
+	Size      int64     `db:"size"`
 	// Version is derived from VersionPURL rather than selected, so that the
 	// PURL percent-encoding is decoded (e.g. "%2B" back to "+").
 	Version string `db:"-"`
 }
 func (db *DB) GetRecentlyCachedPackages(limit int) ([]RecentPackage, error) {
@ -549,10 +461,10 @@ func (db *DB) GetRecentlyCachedPackages(limit int) ([]RecentPackage, error) {
 	}
 	var packages []RecentPackage
-	// There is no separate version column, so the full version PURL is selected
+	// We need to extract version from the purl since there's no separate version column
 	// and the version is decoded from it in Go.
 	query := db.Rebind(`
-		SELECT p.ecosystem, p.name, v.purl as version_purl,
+		SELECT p.ecosystem, p.name,
 		       SUBSTR(v.purl, INSTR(v.purl, '@') + 1) as version,
 		       a.fetched_at, COALESCE(a.size, 0) as size
 		FROM artifacts a
 		JOIN versions v ON v.purl = a.version_purl
@ -562,13 +474,25 @@ func (db *DB) GetRecentlyCachedPackages(limit int) ([]RecentPackage, error) {
 		LIMIT ?
 	`)
 	// For postgres, use different string function
 	if db.dialect == DialectPostgres {
 		query = db.Rebind(`
 			SELECT p.ecosystem, p.name,
 			       SUBSTRING(v.purl FROM POSITION('@' IN v.purl) + 1) as version,
 			       a.fetched_at, COALESCE(a.size, 0) as size
 			FROM artifacts a
 			JOIN versions v ON v.purl = a.version_purl
 			JOIN packages p ON p.purl = v.package_purl
 			WHERE a.storage_path IS NOT NULL AND a.fetched_at IS NOT NULL
 			ORDER BY a.fetched_at DESC
 			LIMIT ?
 		`)
 	}
 	err = db.Select(&packages, query, limit)
 	if err != nil {
 		return nil, err
 	}
 	for i := range packages {
 		packages[i].Version = VersionFromPURL(packages[i].VersionPURL)
 	}
 	return packages, nil
 }
@ -963,72 +887,3 @@ func (db *DB) CountCachedPackages(ecosystem string) (int64, error) {
 	err = db.Get(&count, query, args...)
 	return count, err
 }
 // Metadata cache queries
 func (db *DB) GetMetadataCache(ecosystem, name string) (*MetadataCacheEntry, error) {
 	var entry MetadataCacheEntry
 	query := db.Rebind(`
 		SELECT id, ecosystem, name, storage_path, etag, link, content_type, content_encoding,
 		       content_digest, size, last_modified, fetched_at, created_at, updated_at
 		FROM metadata_cache WHERE ecosystem = ? AND name = ?
 	`)
 	err := db.Get(&entry, query, ecosystem, name)
 	if err == sql.ErrNoRows {
 		return nil, nil
 	}
 	if err != nil {
 		return nil, err
 	}
 	return &entry, nil
 }
 func (db *DB) UpsertMetadataCache(entry *MetadataCacheEntry) error {
 	now := time.Now()
 	var query string
 	if db.dialect == DialectPostgres {
 		query = `
 			INSERT INTO metadata_cache (ecosystem, name, storage_path, etag, link, content_type, content_encoding,
 			                            content_digest, size, last_modified, fetched_at, created_at, updated_at)
 			VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13)
 			ON CONFLICT(ecosystem, name) DO UPDATE SET
 				storage_path = EXCLUDED.storage_path,
 				etag = EXCLUDED.etag,
 				link = EXCLUDED.link,
 				content_type = EXCLUDED.content_type,
 				content_encoding = EXCLUDED.content_encoding,
 				content_digest = EXCLUDED.content_digest,
 				size = EXCLUDED.size,
 				last_modified = EXCLUDED.last_modified,
 				fetched_at = EXCLUDED.fetched_at,
 				updated_at = EXCLUDED.updated_at
 		`
 	} else {
 		query = `
 			INSERT INTO metadata_cache (ecosystem, name, storage_path, etag, link, content_type, content_encoding,
 			                            content_digest, size, last_modified, fetched_at, created_at, updated_at)
 			VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
 			ON CONFLICT(ecosystem, name) DO UPDATE SET
 				storage_path = excluded.storage_path,
 				etag = excluded.etag,
 				link = excluded.link,
 				content_type = excluded.content_type,
 				content_encoding = excluded.content_encoding,
 				content_digest = excluded.content_digest,
 				size = excluded.size,
 				last_modified = excluded.last_modified,
 				fetched_at = excluded.fetched_at,
 				updated_at = excluded.updated_at
 		`
 	}
 	_, err := db.Exec(query,
 		entry.Ecosystem, entry.Name, entry.StoragePath, entry.ETag, entry.Link,
 		entry.ContentType, entry.ContentEncoding, entry.ContentDigest, entry.Size, entry.LastModified, entry.FetchedAt, now, now,
 	)
 	if err != nil {
 		return fmt.Errorf("upserting metadata cache: %w", err)
 	}
 	return nil
 }
--- a/internal/database/queries_packages_list_test.go
+++ b/internal/database/queries_packages_list_test.go
@ -6,121 +6,118 @@ import (
 	"time"
 )
-const testEcosystemNPM = "npm"
+func TestListCachedPackages(t *testing.T) {
 func setupListCachedPackagesDB(t *testing.T) *DB {
 	t.Helper()
 	db, err := Create(t.TempDir() + "/test.db")
 	if err != nil {
 		t.Fatal(err)
 	}
 	seedListCachedPackagesData(t, db)
 	return db
 }
 func seedListCachedPackagesData(t *testing.T, db *DB) {
 	t.Helper()
 	packages := []*Package{
 		{
 			PURL:          "pkg:npm/lodash",
 			Ecosystem:     testEcosystemNPM,
 			Name:          "lodash",
 			LatestVersion: sql.NullString{String: "4.17.21", Valid: true},
 			License:       sql.NullString{String: "MIT", Valid: true},
 		},
 		{
 			PURL:          "pkg:cargo/serde",
 			Ecosystem:     "cargo",
 			Name:          "serde",
 			LatestVersion: sql.NullString{String: "1.0.0", Valid: true},
 			License:       sql.NullString{String: "MIT OR Apache-2.0", Valid: true},
 		},
 		{
 			PURL:          "pkg:npm/react",
 			Ecosystem:     testEcosystemNPM,
 			Name:          "react",
 			LatestVersion: sql.NullString{String: "18.0.0", Valid: true},
 			License:       sql.NullString{String: "MIT", Valid: true},
 		},
 	}
 	for _, pkg := range packages {
 		if err := db.UpsertPackage(pkg); err != nil {
 			t.Fatal(err)
 		}
 	}
 	versions := []*Version{
 		{PURL: "pkg:npm/lodash@4.17.21", PackagePURL: packages[0].PURL},
 		{PURL: "pkg:cargo/serde@1.0.0", PackagePURL: packages[1].PURL},
 		{PURL: "pkg:npm/react@18.0.0", PackagePURL: packages[2].PURL},
 	}
 	for _, ver := range versions {
 		if err := db.UpsertVersion(ver); err != nil {
 			t.Fatal(err)
 		}
 	}
 	artifacts := []*Artifact{
 		{
 			VersionPURL: versions[0].PURL,
 			Filename:    "lodash.tgz",
 			UpstreamURL: "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
 			StoragePath: sql.NullString{String: "npm/lodash/4.17.21/lodash.tgz", Valid: true},
 			Size:        sql.NullInt64{Int64: 1024, Valid: true},
 			HitCount:    100,
 			FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 		},
 		{
 			VersionPURL: versions[1].PURL,
 			Filename:    "serde.crate",
 			UpstreamURL: "https://crates.io/api/v1/crates/serde/1.0.0/download",
 			StoragePath: sql.NullString{String: "cargo/serde/1.0.0/serde.crate", Valid: true},
 			Size:        sql.NullInt64{Int64: 2048, Valid: true},
 			HitCount:    50,
 			FetchedAt:   sql.NullTime{Time: time.Now().Add(-1 * time.Hour), Valid: true},
 		},
 		{
 			VersionPURL: versions[2].PURL,
 			Filename:    "react.tgz",
 			UpstreamURL: "https://registry.npmjs.org/react/-/react-18.0.0.tgz",
 			StoragePath: sql.NullString{String: "npm/react/18.0.0/react.tgz", Valid: true},
 			Size:        sql.NullInt64{Int64: 512, Valid: true},
 			HitCount:    200,
 			FetchedAt:   sql.NullTime{Time: time.Now().Add(-2 * time.Hour), Valid: true},
 		},
 	}
 	for _, art := range artifacts {
 		if err := db.UpsertArtifact(art); err != nil {
 			t.Fatal(err)
 		}
 	}
 }
 func TestListCachedPackages(t *testing.T) {
 	db := setupListCachedPackagesDB(t)
 	defer func() { _ = db.Close() }()
-	listAll := func(ecosystem, sortBy string) []PackageListItem {
+	// Create test packages
-		t.Helper()
+	pkg1 := &Package{
-		packages, err := db.ListCachedPackages(ecosystem, sortBy, 10, 0)
+		PURL:          "pkg:npm/lodash",
-		if err != nil {
+		Ecosystem:     "npm",
-			t.Fatal(err)
+		Name:          "lodash",
-		}
+		LatestVersion: sql.NullString{String: "4.17.21", Valid: true},
-		return packages
+		License:       sql.NullString{String: "MIT", Valid: true},
 	}
 	pkg2 := &Package{
 		PURL:          "pkg:cargo/serde",
 		Ecosystem:     "cargo",
 		Name:          "serde",
 		LatestVersion: sql.NullString{String: "1.0.0", Valid: true},
 		License:       sql.NullString{String: "MIT OR Apache-2.0", Valid: true},
 	}
 	pkg3 := &Package{
 		PURL:          "pkg:npm/react",
 		Ecosystem:     "npm",
 		Name:          "react",
 		LatestVersion: sql.NullString{String: "18.0.0", Valid: true},
 		License:       sql.NullString{String: "MIT", Valid: true},
 	}
 	if err := db.UpsertPackage(pkg1); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertPackage(pkg2); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertPackage(pkg3); err != nil {
 		t.Fatal(err)
 	}
 	// Create versions
 	ver1 := &Version{
 		PURL:        "pkg:npm/lodash@4.17.21",
 		PackagePURL: pkg1.PURL,
 	}
 	ver2 := &Version{
 		PURL:        "pkg:cargo/serde@1.0.0",
 		PackagePURL: pkg2.PURL,
 	}
 	ver3 := &Version{
 		PURL:        "pkg:npm/react@18.0.0",
 		PackagePURL: pkg3.PURL,
 	}
 	if err := db.UpsertVersion(ver1); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertVersion(ver2); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertVersion(ver3); err != nil {
 		t.Fatal(err)
 	}
 	// Create artifacts
 	art1 := &Artifact{
 		VersionPURL: ver1.PURL,
 		Filename:    "lodash.tgz",
 		UpstreamURL: "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
 		StoragePath: sql.NullString{String: "npm/lodash/4.17.21/lodash.tgz", Valid: true},
 		Size:        sql.NullInt64{Int64: 1024, Valid: true},
 		HitCount:    100,
 		FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	art2 := &Artifact{
 		VersionPURL: ver2.PURL,
 		Filename:    "serde.crate",
 		UpstreamURL: "https://crates.io/api/v1/crates/serde/1.0.0/download",
 		StoragePath: sql.NullString{String: "cargo/serde/1.0.0/serde.crate", Valid: true},
 		Size:        sql.NullInt64{Int64: 2048, Valid: true},
 		HitCount:    50,
 		FetchedAt:   sql.NullTime{Time: time.Now().Add(-1 * time.Hour), Valid: true},
 	}
 	art3 := &Artifact{
 		VersionPURL: ver3.PURL,
 		Filename:    "react.tgz",
 		UpstreamURL: "https://registry.npmjs.org/react/-/react-18.0.0.tgz",
 		StoragePath: sql.NullString{String: "npm/react/18.0.0/react.tgz", Valid: true},
 		Size:        sql.NullInt64{Int64: 512, Valid: true},
 		HitCount:    200,
 		FetchedAt:   sql.NullTime{Time: time.Now().Add(-2 * time.Hour), Valid: true},
 	}
 	if err := db.UpsertArtifact(art1); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertArtifact(art2); err != nil {
 		t.Fatal(err)
 	}
 	if err := db.UpsertArtifact(art3); err != nil {
 		t.Fatal(err)
 	}
 	t.Run("list all packages", func(t *testing.T) {
-		packages := listAll("", "hits")
+		packages, err := db.ListCachedPackages("", "hits", 10, 0)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if len(packages) != 3 {
 			t.Errorf("expected 3 packages, got %d", len(packages))
 		}
 		// Should be sorted by hits DESC
 		if packages[0].Name != "react" {
 			t.Errorf("expected first package to be react, got %s", packages[0].Name)
 		}
@ -130,26 +127,35 @@ func TestListCachedPackages(t *testing.T) {
 	})
 	t.Run("filter by ecosystem", func(t *testing.T) {
-		packages := listAll(testEcosystemNPM, "hits")
+		packages, err := db.ListCachedPackages("npm", "hits", 10, 0)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if len(packages) != 2 {
 			t.Errorf("expected 2 npm packages, got %d", len(packages))
 		}
 		for _, pkg := range packages {
-			if pkg.Ecosystem != testEcosystemNPM {
+			if pkg.Ecosystem != "npm" {
 				t.Errorf("expected npm ecosystem, got %s", pkg.Ecosystem)
 			}
 		}
 	})
 	t.Run("sort by name", func(t *testing.T) {
-		packages := listAll("", "name")
+		packages, err := db.ListCachedPackages("", "name", 10, 0)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if packages[0].Name != "lodash" {
 			t.Errorf("expected first package to be lodash, got %s", packages[0].Name)
 		}
 	})
 	t.Run("sort by size", func(t *testing.T) {
-		packages := listAll("", "size")
+		packages, err := db.ListCachedPackages("", "size", 10, 0)
 		if err != nil {
 			t.Fatal(err)
 		}
 		if packages[0].Name != "serde" {
 			t.Errorf("expected first package to be serde (largest), got %s", packages[0].Name)
 		}
@ -164,7 +170,7 @@ func TestListCachedPackages(t *testing.T) {
 			t.Errorf("expected count 3, got %d", count)
 		}
-		count, err = db.CountCachedPackages(testEcosystemNPM)
+		count, err = db.CountCachedPackages("npm")
 		if err != nil {
 			t.Fatal(err)
 		}
--- a/internal/database/schema.go
+++ b/internal/database/schema.go
@ -1,16 +1,6 @@
 package database
-import (
+import "fmt"
 	"fmt"
 	"strings"
 	"time"
 )
 const (
 	postgresTimestamp = "TIMESTAMP"
 	sqliteDatetime    = "DATETIME"
 	colTypeText       = "TEXT"
 )
 // Schema for proxy-specific tables. The packages and versions tables
 // are compatible with git-pkgs, allowing the proxy to use an existing
@ -94,29 +84,6 @@ CREATE TABLE IF NOT EXISTS vulnerabilities (
 );
 CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
 CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
 CREATE TABLE IF NOT EXISTS metadata_cache (
 	id INTEGER PRIMARY KEY,
 	ecosystem TEXT NOT NULL,
 	name TEXT NOT NULL,
 	storage_path TEXT NOT NULL,
 	etag TEXT,
 	link TEXT,
 	content_type TEXT,
 	content_encoding TEXT,
 	content_digest TEXT,
 	size INTEGER,
 	last_modified DATETIME,
 	fetched_at DATETIME,
 	created_at DATETIME,
 	updated_at DATETIME
 );
 CREATE UNIQUE INDEX IF NOT EXISTS idx_metadata_eco_name ON metadata_cache(ecosystem, name);
 CREATE TABLE IF NOT EXISTS migrations (
 	name TEXT NOT NULL PRIMARY KEY,
 	applied_at DATETIME NOT NULL
 );
 `
 var schemaPostgres = `
@ -197,29 +164,6 @@ CREATE TABLE IF NOT EXISTS vulnerabilities (
 );
 CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
 CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
 CREATE TABLE IF NOT EXISTS metadata_cache (
 	id SERIAL PRIMARY KEY,
 	ecosystem TEXT NOT NULL,
 	name TEXT NOT NULL,
 	storage_path TEXT NOT NULL,
 	etag TEXT,
 	link TEXT,
 	content_type TEXT,
 	content_encoding TEXT,
 	content_digest TEXT,
 	size BIGINT,
 	last_modified TIMESTAMP,
 	fetched_at TIMESTAMP,
 	created_at TIMESTAMP,
 	updated_at TIMESTAMP
 );
 CREATE UNIQUE INDEX IF NOT EXISTS idx_metadata_eco_name ON metadata_cache(ecosystem, name);
 CREATE TABLE IF NOT EXISTS migrations (
 	name TEXT NOT NULL PRIMARY KEY,
 	applied_at TIMESTAMP NOT NULL
 );
 `
 // schemaArtifactsOnly contains just the artifacts table for adding to existing git-pkgs databases.
@ -286,11 +230,6 @@ func (db *DB) CreateSchema() error {
 		return fmt.Errorf("setting schema version: %w", err)
 	}
 	// Record all migrations as applied since the full schema is already current.
 	if err := db.recordAllMigrations(); err != nil {
 		return fmt.Errorf("recording migrations: %w", err)
 	}
 	return db.OptimizeForReads()
 }
@ -351,349 +290,127 @@ func (db *DB) HasColumn(table, column string) (bool, error) {
 	return exists, err
 }
-// migration represents a named schema migration.
+// MigrateSchema adds missing columns to existing tables for backward compatibility.
 type migration struct {
 	name string
 	fn   func(db *DB) error
 }
 // migrations is the ordered list of all schema migrations. See
 // docs/migrations.md for how to add new ones.
 var migrations = []migration{
 	{"001_add_packages_enrichment_columns", migrateAddPackagesEnrichmentColumns},
 	{"002_add_versions_enrichment_columns", migrateAddVersionsEnrichmentColumns},
 	{"003_ensure_artifacts_table", migrateEnsureArtifactsTable},
 	{"004_ensure_vulnerabilities_table", migrateEnsureVulnerabilitiesTable},
 	{"005_ensure_metadata_cache_table", migrateEnsureMetadataCacheTable},
 	{"006_add_metadata_content_digest", migrateAddMetadataContentDigest},
 	{"007_add_metadata_link", migrateAddMetadataLink},
 	{"008_add_metadata_content_encoding", migrateAddMetadataContentEncoding},
 }
 // isTableNotFound returns true if the error indicates a missing table.
 // SQLite returns "no such table: X", Postgres returns "relation \"X\" does not exist".
 func isTableNotFound(err error) bool {
 	msg := err.Error()
 	return strings.Contains(msg, "no such table") ||
 		strings.Contains(msg, "does not exist")
 }
 // createMigrationsTable creates the migrations table.
 func (db *DB) createMigrationsTable() error {
 	var ts string
 	if db.dialect == DialectPostgres {
 		ts = postgresTimestamp
 	} else {
 		ts = sqliteDatetime
 	}
 	query := fmt.Sprintf(`CREATE TABLE IF NOT EXISTS migrations (
 		name TEXT NOT NULL PRIMARY KEY,
 		applied_at %s NOT NULL
 	)`, ts)
 	if _, err := db.Exec(query); err != nil {
 		return fmt.Errorf("creating migrations table: %w", err)
 	}
 	return nil
 }
 // appliedMigrations returns the set of migration names that have been recorded.
 // Returns nil if the migrations table does not exist yet.
 func (db *DB) appliedMigrations() (map[string]bool, error) {
 	var names []string
 	err := db.Select(&names, "SELECT name FROM migrations")
 	if err != nil {
 		// Table doesn't exist yet — this is a pre-migration database.
 		if isTableNotFound(err) {
 			return nil, nil
 		}
 		return nil, fmt.Errorf("loading applied migrations: %w", err)
 	}
 	applied := make(map[string]bool, len(names))
 	for _, name := range names {
 		applied[name] = true
 	}
 	return applied, nil
 }
 // recordMigration inserts a migration name into the migrations table.
 func (db *DB) recordMigration(name string) error {
 	query := db.Rebind("INSERT INTO migrations (name, applied_at) VALUES (?, ?)")
 	if _, err := db.Exec(query, name, time.Now().UTC()); err != nil {
 		return fmt.Errorf("recording migration %s: %w", name, err)
 	}
 	return nil
 }
 // recordAllMigrations marks every known migration as applied.
 func (db *DB) recordAllMigrations() error {
 	for _, m := range migrations {
 		if err := db.recordMigration(m.name); err != nil {
 			return err
 		}
 	}
 	return nil
 }
 // MigrateSchema applies any unapplied migrations in order.
 // For a fully migrated database this executes a single SELECT query.
 func (db *DB) MigrateSchema() error {
-	applied, err := db.appliedMigrations()
+	// Check and add missing columns to packages table
-	if err != nil {
+	packagesColumns := map[string]string{
-		return err
+		"registry_url":     "TEXT",
-	}
+		"supplier_name":    "TEXT",
-
+		"supplier_type":    "TEXT",
-	// If the migrations table didn't exist, create it now.
+		"source":           "TEXT",
-	if applied == nil {
+		"enriched_at":      "DATETIME",
-		if err := db.createMigrationsTable(); err != nil {
+		"vulns_synced_at":  "DATETIME",
 			return err
 		}
 		applied = make(map[string]bool)
 	}
 	for _, m := range migrations {
 		if applied[m.name] {
 			continue
 		}
 		if err := m.fn(db); err != nil {
 			return fmt.Errorf("migration %s: %w", m.name, err)
 		}
 		if err := db.recordMigration(m.name); err != nil {
 			return err
 		}
 	}
 	return nil
 }
 func migrateAddPackagesEnrichmentColumns(db *DB) error {
 	columns := map[string]string{
 		"registry_url":    colTypeText,
 		"supplier_name":   colTypeText,
 		"supplier_type":   colTypeText,
 		"source":          colTypeText,
 		"enriched_at":     sqliteDatetime,
 		"vulns_synced_at": sqliteDatetime,
 	}
 	if db.dialect == DialectPostgres {
-		columns["enriched_at"] = postgresTimestamp
+		packagesColumns["enriched_at"] = "TIMESTAMP"
-		columns["vulns_synced_at"] = postgresTimestamp
+		packagesColumns["vulns_synced_at"] = "TIMESTAMP"
 	}
-	for column, colType := range columns {
+	for column, colType := range packagesColumns {
 		hasCol, err := db.HasColumn("packages", column)
 		if err != nil {
 			return fmt.Errorf("checking column %s: %w", column, err)
 		}
 		if !hasCol {
-			alterQuery := fmt.Sprintf("ALTER TABLE packages ADD COLUMN %s %s", column, colType)
+			var alterQuery string
 			if db.dialect == DialectPostgres {
 				alterQuery = fmt.Sprintf("ALTER TABLE packages ADD COLUMN %s %s", column, colType)
 			} else {
 				alterQuery = fmt.Sprintf("ALTER TABLE packages ADD COLUMN %s %s", column, colType)
 			}
 			if _, err := db.Exec(alterQuery); err != nil {
 				return fmt.Errorf("adding column %s to packages: %w", column, err)
 			}
 		}
 	}
 	return nil
 }
-func migrateAddVersionsEnrichmentColumns(db *DB) error {
+	// Check and add missing columns to versions table
-	columns := map[string]string{
+	versionsColumns := map[string]string{
-		"integrity":   colTypeText,
+		"integrity":   "TEXT",
 		"yanked":      "INTEGER DEFAULT 0",
-		"source":      colTypeText,
+		"source":      "TEXT",
-		"enriched_at": sqliteDatetime,
+		"enriched_at": "DATETIME",
 	}
 	if db.dialect == DialectPostgres {
-		columns["yanked"] = "BOOLEAN DEFAULT FALSE"
+		versionsColumns["yanked"] = "BOOLEAN DEFAULT FALSE"
-		columns["enriched_at"] = postgresTimestamp
+		versionsColumns["enriched_at"] = "TIMESTAMP"
 	}
-	for column, colType := range columns {
+	for column, colType := range versionsColumns {
 		hasCol, err := db.HasColumn("versions", column)
 		if err != nil {
 			return fmt.Errorf("checking column %s: %w", column, err)
 		}
 		if !hasCol {
-			alterQuery := fmt.Sprintf("ALTER TABLE versions ADD COLUMN %s %s", column, colType)
+			var alterQuery string
 			if db.dialect == DialectPostgres {
 				alterQuery = fmt.Sprintf("ALTER TABLE versions ADD COLUMN %s %s", column, colType)
 			} else {
 				alterQuery = fmt.Sprintf("ALTER TABLE versions ADD COLUMN %s %s", column, colType)
 			}
 			if _, err := db.Exec(alterQuery); err != nil {
 				return fmt.Errorf("adding column %s to versions: %w", column, err)
 			}
 		}
 	}
 	return nil
 }
-func migrateEnsureArtifactsTable(db *DB) error {
+	// Ensure artifacts table exists
-	return db.EnsureArtifactsTable()
+	if err := db.EnsureArtifactsTable(); err != nil {
-}
+		return fmt.Errorf("ensuring artifacts table: %w", err)
 	}
-func migrateEnsureVulnerabilitiesTable(db *DB) error {
+	// Ensure vulnerabilities table exists
 	hasVulns, err := db.HasTable("vulnerabilities")
 	if err != nil {
 		return fmt.Errorf("checking vulnerabilities table: %w", err)
 	}
-	if hasVulns {
+	if !hasVulns {
-		return nil
+		var vulnSchema string
-	}
+		if db.dialect == DialectPostgres {
-
+			vulnSchema = `
-	var vulnSchema string
+				CREATE TABLE vulnerabilities (
-	if db.dialect == DialectPostgres {
+					id SERIAL PRIMARY KEY,
-		vulnSchema = `
+					vuln_id TEXT NOT NULL,
-			CREATE TABLE vulnerabilities (
+					ecosystem TEXT NOT NULL,
-				id SERIAL PRIMARY KEY,
+					package_name TEXT NOT NULL,
-				vuln_id TEXT NOT NULL,
+					severity TEXT,
-				ecosystem TEXT NOT NULL,
+					summary TEXT,
-				package_name TEXT NOT NULL,
+					fixed_version TEXT,
-				severity TEXT,
+					cvss_score REAL,
-				summary TEXT,
+					"references" TEXT,
-				fixed_version TEXT,
+					fetched_at TIMESTAMP,
-				cvss_score REAL,
+					created_at TIMESTAMP,
-				"references" TEXT,
+					updated_at TIMESTAMP
-				fetched_at TIMESTAMP,
+				);
-				created_at TIMESTAMP,
+				CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
-				updated_at TIMESTAMP
+				CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
-			);
+			`
-			CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
+		} else {
-			CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
+			vulnSchema = `
-		`
+				CREATE TABLE vulnerabilities (
-	} else {
+					id INTEGER PRIMARY KEY,
-		vulnSchema = `
+					vuln_id TEXT NOT NULL,
-			CREATE TABLE vulnerabilities (
+					ecosystem TEXT NOT NULL,
-				id INTEGER PRIMARY KEY,
+					package_name TEXT NOT NULL,
-				vuln_id TEXT NOT NULL,
+					severity TEXT,
-				ecosystem TEXT NOT NULL,
+					summary TEXT,
-				package_name TEXT NOT NULL,
+					fixed_version TEXT,
-				severity TEXT,
+					cvss_score REAL,
-				summary TEXT,
+					"references" TEXT,
-				fixed_version TEXT,
+					fetched_at DATETIME,
-				cvss_score REAL,
+					created_at DATETIME,
-				"references" TEXT,
+					updated_at DATETIME
-				fetched_at DATETIME,
+				);
-				created_at DATETIME,
+				CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
-				updated_at DATETIME
+				CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
-			);
+			`
-			CREATE UNIQUE INDEX IF NOT EXISTS idx_vulns_id_pkg ON vulnerabilities(vuln_id, ecosystem, package_name);
+		}
-			CREATE INDEX IF NOT EXISTS idx_vulns_ecosystem_pkg ON vulnerabilities(ecosystem, package_name);
+		if _, err := db.Exec(vulnSchema); err != nil {
-		`
+			return fmt.Errorf("creating vulnerabilities table: %w", err)
-	}
+		}
 	if _, err := db.Exec(vulnSchema); err != nil {
 		return fmt.Errorf("creating vulnerabilities table: %w", err)
 	}
 	return nil
 }
 func migrateEnsureMetadataCacheTable(db *DB) error {
 	return db.EnsureMetadataCacheTable()
 }
 func migrateAddMetadataContentDigest(db *DB) error {
 	hasColumn, err := db.HasColumn("metadata_cache", "content_digest")
 	if err != nil {
 		return fmt.Errorf("checking metadata_cache content_digest column: %w", err)
 	}
 	if hasColumn {
 		return nil
 	}
 	if _, err := db.Exec("ALTER TABLE metadata_cache ADD COLUMN content_digest TEXT"); err != nil {
 		return fmt.Errorf("adding metadata_cache content_digest column: %w", err)
 	}
 	return nil
 }
 func migrateAddMetadataLink(db *DB) error {
 	hasColumn, err := db.HasColumn("metadata_cache", "link")
 	if err != nil {
 		return fmt.Errorf("checking metadata_cache link column: %w", err)
 	}
 	if hasColumn {
 		return nil
 	}
 	if _, err := db.Exec("ALTER TABLE metadata_cache ADD COLUMN link TEXT"); err != nil {
 		return fmt.Errorf("adding metadata_cache link column: %w", err)
 	}
 	return nil
 }
 func migrateAddMetadataContentEncoding(db *DB) error {
 	hasColumn, err := db.HasColumn("metadata_cache", "content_encoding")
 	if err != nil {
 		return fmt.Errorf("checking metadata_cache content_encoding column: %w", err)
 	}
 	if hasColumn {
 		return nil
 	}
 	if _, err := db.Exec("ALTER TABLE metadata_cache ADD COLUMN content_encoding TEXT"); err != nil {
 		return fmt.Errorf("adding metadata_cache content_encoding column: %w", err)
 	}
 	// Rows cached before this column existed hold transport-decompressed bytes
 	// with no recorded encoding and the upstream ETag captured under Go's
 	// auto-added Accept-Encoding: gzip. Clearing the validators forces one fresh
 	// fetch per key so the encoding is recorded and verbatim bytes are restored,
 	// instead of an If-None-Match 304 re-serving the stale decompressed copy.
 	if _, err := db.Exec("UPDATE metadata_cache SET etag = NULL, fetched_at = NULL"); err != nil {
 		return fmt.Errorf("invalidating metadata_cache validators: %w", err)
 	}
 	return nil
 }
 // EnsureMetadataCacheTable creates the metadata_cache table if it doesn't exist.
 func (db *DB) EnsureMetadataCacheTable() error {
 	has, err := db.HasTable("metadata_cache")
 	if err != nil {
 		return fmt.Errorf("checking metadata_cache table: %w", err)
 	}
 	if has {
 		return nil
 	}
 	var schema string
 	if db.dialect == DialectPostgres {
 		schema = `
 			CREATE TABLE metadata_cache (
 				id SERIAL PRIMARY KEY,
 				ecosystem TEXT NOT NULL,
 				name TEXT NOT NULL,
 				storage_path TEXT NOT NULL,
 			etag TEXT,
 			link TEXT,
 			content_type TEXT,
 			content_encoding TEXT,
 				content_digest TEXT,
 				size BIGINT,
 				last_modified TIMESTAMP,
 				fetched_at TIMESTAMP,
 				created_at TIMESTAMP,
 				updated_at TIMESTAMP
 			);
 			CREATE UNIQUE INDEX IF NOT EXISTS idx_metadata_eco_name ON metadata_cache(ecosystem, name);
 		`
 	} else {
 		schema = `
 			CREATE TABLE metadata_cache (
 				id INTEGER PRIMARY KEY,
 				ecosystem TEXT NOT NULL,
 				name TEXT NOT NULL,
 				storage_path TEXT NOT NULL,
 			etag TEXT,
 			link TEXT,
 			content_type TEXT,
 			content_encoding TEXT,
 				content_digest TEXT,
 				size INTEGER,
 				last_modified DATETIME,
 				fetched_at DATETIME,
 				created_at DATETIME,
 				updated_at DATETIME
 			);
 			CREATE UNIQUE INDEX IF NOT EXISTS idx_metadata_eco_name ON metadata_cache(ecosystem, name);
 		`
 	}
 	if _, err := db.Exec(schema); err != nil {
 		return fmt.Errorf("creating metadata_cache table: %w", err)
 	}
 	return nil
 }
--- a/internal/database/types.go
+++ b/internal/database/types.go
@ -2,128 +2,16 @@ package database
 import (
 	"database/sql"
 	"net/url"
 	"strings"
 	"time"
-	"github.com/git-pkgs/artifacts"
+	gitpkgsdb "github.com/git-pkgs/git-pkgs/database"
 )
-// Package represents a package in the database.
+// Package and Version are shared with git-pkgs. The types and schema
-// Schema is compatible with git-pkgs.
+// are defined in the git-pkgs database package, keeping both projects
-type Package struct {
+// in sync automatically.
-	ID            int64          `db:"id" json:"id"`
+type Package = gitpkgsdb.Package
-	PURL          string         `db:"purl" json:"purl"`
+type Version = gitpkgsdb.Version
 	Ecosystem     string         `db:"ecosystem" json:"ecosystem"`
 	Name          string         `db:"name" json:"name"`
 	LatestVersion sql.NullString `db:"latest_version" json:"latest_version,omitempty"`
 	License       sql.NullString `db:"license" json:"license,omitempty"`
 	Description   sql.NullString `db:"description" json:"description,omitempty"`
 	Homepage      sql.NullString `db:"homepage" json:"homepage,omitempty"`
 	RepositoryURL sql.NullString `db:"repository_url" json:"repository_url,omitempty"`
 	RegistryURL   sql.NullString `db:"registry_url" json:"registry_url,omitempty"`
 	SupplierName  sql.NullString `db:"supplier_name" json:"supplier_name,omitempty"`
 	SupplierType  sql.NullString `db:"supplier_type" json:"supplier_type,omitempty"`
 	Source        sql.NullString `db:"source" json:"source,omitempty"`
 	EnrichedAt    sql.NullTime   `db:"enriched_at" json:"enriched_at,omitempty"`
 	VulnsSyncedAt sql.NullTime   `db:"vulns_synced_at" json:"vulns_synced_at,omitempty"`
 	CreatedAt     time.Time      `db:"created_at" json:"created_at"`
 	UpdatedAt     time.Time      `db:"updated_at" json:"updated_at"`
 }
 // Version represents a package version in the database.
 // Schema is compatible with git-pkgs.
 type Version struct {
 	ID          int64          `db:"id" json:"id"`
 	PURL        string         `db:"purl" json:"purl"`
 	PackagePURL string         `db:"package_purl" json:"package_purl"`
 	License     sql.NullString `db:"license" json:"license,omitempty"`
 	PublishedAt sql.NullTime   `db:"published_at" json:"published_at,omitempty"`
 	Integrity   sql.NullString `db:"integrity" json:"integrity,omitempty"`
 	Yanked      bool           `db:"yanked" json:"yanked"`
 	Source      sql.NullString `db:"source" json:"source,omitempty"`
 	EnrichedAt  sql.NullTime   `db:"enriched_at" json:"enriched_at,omitempty"`
 	CreatedAt   time.Time      `db:"created_at" json:"created_at"`
 	UpdatedAt   time.Time      `db:"updated_at" json:"updated_at"`
 }
 // Version extracts the version string from the PURL.
 // e.g., "pkg:npm/lodash@4.17.21" -> "4.17.21"
 func (v *Version) Version() string {
 	return VersionFromPURL(v.PURL)
 }
 // EscapedVersion returns the version escaped for use as a single URL path
 // segment.
 //
 // Version returns decoded text, which is what should be shown to a user but is
 // not safe to drop into a link: html/template preserves reserved characters and
 // existing escapes in a URL, so "release/1" would split into two path segments,
 // "v1?build" would start a query string, and a literal "%2B" would be read back
 // as "+". Escaping here and decoding in splitWildcardPath round-trips the value,
 // so the link resolves to the version that was stored.
 func (v *Version) EscapedVersion() string {
 	return url.PathEscape(v.Version())
 }
 // DisplayPURL returns the PURL with its path components percent-decoded, for
 // showing in the UI. The stored PURL keeps the canonical encoding (which is
 // what the API and all lookups use); this is only a readable rendering, so that
 // a version like "7.91+dfsg1-2ubuntu0.1" is not shown as "7.91%2Bdfsg1-2ubuntu0.1"
 // and an npm scope is shown as "@babel" rather than "%40babel". Qualifiers and
 // subpath keep their encoding, since decoding those would be ambiguous.
 func (v *Version) DisplayPURL() string {
 	base, suffix := v.PURL, ""
 	if i := strings.IndexAny(base, "?#"); i >= 0 {
 		base, suffix = base[:i], base[i:]
 	}
 	name, version := base, ""
 	if idx := strings.LastIndex(base, "@"); idx >= 0 {
 		name, version = base[:idx], "@"+decodePURLComponent(base[idx+1:])
 	}
 	parts := strings.Split(name, "/")
 	for i, part := range parts {
 		parts[i] = decodePURLComponent(part)
 	}
 	return strings.Join(parts, "/") + version + suffix
 }
 // VersionFromPURL extracts the decoded version string from a PURL.
 //
 // PURL percent-encodes characters that are not safe in a path component, so a
 // Debian version like "7.91+dfsg1-2ubuntu0.1" is stored as
 // "pkg:deb/nmap@7.91%2Bdfsg1-2ubuntu0.1". The raw substring after "@" is
 // therefore not the version: it must be percent-decoded before being displayed
 // or used to build a URL, otherwise "%2B" leaks into the UI and round-tripping
 // the value back into a PURL double-encodes it.
 //
 // e.g., "pkg:npm/lodash@4.17.21" -> "4.17.21"
 func VersionFromPURL(p string) string {
 	// Qualifiers ("?key=value") and subpath ("#path") follow the version.
 	if i := strings.IndexAny(p, "?#"); i >= 0 {
 		p = p[:i]
 	}
 	idx := strings.LastIndex(p, "@")
 	if idx < 0 {
 		return ""
 	}
 	return decodePURLComponent(p[idx+1:])
 }
 // decodePURLComponent percent-decodes a single PURL path component, returning
 // the input unchanged if it is not valid percent-encoding.
 func decodePURLComponent(s string) string {
 	if !strings.Contains(s, "%") {
 		return s
 	}
 	decoded, err := url.PathUnescape(s)
 	if err != nil {
 		return s
 	}
 	return decoded
 }
 // Artifact represents a cached artifact in the database.
 // This table is proxy-specific and not part of git-pkgs.
@ -148,44 +36,18 @@ func (a *Artifact) IsCached() bool {
 	return a.StoragePath.Valid && a.FetchedAt.Valid
 }
 // CachedArtifact contains the fields needed to serve a cached artifact.
 type CachedArtifact struct {
 	Ecosystem   string
 	StoragePath string
 	Artifact    artifacts.Artifact
 	Integrity   sql.NullString
 }
 // MetadataCacheEntry represents a cached metadata blob for offline serving.
 type MetadataCacheEntry struct {
 	ID              int64          `db:"id" json:"id"`
 	Ecosystem       string         `db:"ecosystem" json:"ecosystem"`
 	Name            string         `db:"name" json:"name"`
 	StoragePath     string         `db:"storage_path" json:"storage_path"`
 	ETag            sql.NullString `db:"etag" json:"etag,omitempty"`
 	Link            sql.NullString `db:"link" json:"link,omitempty"`
 	ContentType     sql.NullString `db:"content_type" json:"content_type,omitempty"`
 	ContentEncoding sql.NullString `db:"content_encoding" json:"content_encoding,omitempty"`
 	ContentDigest   sql.NullString `db:"content_digest" json:"content_digest,omitempty"`
 	Size            sql.NullInt64  `db:"size" json:"size,omitempty"`
 	LastModified    sql.NullTime   `db:"last_modified" json:"last_modified,omitempty"`
 	FetchedAt       sql.NullTime   `db:"fetched_at" json:"fetched_at,omitempty"`
 	CreatedAt       time.Time      `db:"created_at" json:"created_at"`
 	UpdatedAt       time.Time      `db:"updated_at" json:"updated_at"`
 }
 // Vulnerability represents a cached vulnerability record.
 type Vulnerability struct {
-	ID           int64           `db:"id" json:"id"`
+	ID           int64          `db:"id" json:"id"`
-	VulnID       string          `db:"vuln_id" json:"vuln_id"`
+	VulnID       string         `db:"vuln_id" json:"vuln_id"`
-	Ecosystem    string          `db:"ecosystem" json:"ecosystem"`
+	Ecosystem    string         `db:"ecosystem" json:"ecosystem"`
-	PackageName  string          `db:"package_name" json:"package_name"`
+	PackageName  string         `db:"package_name" json:"package_name"`
-	Severity     sql.NullString  `db:"severity" json:"severity,omitempty"`
+	Severity     sql.NullString `db:"severity" json:"severity,omitempty"`
-	Summary      sql.NullString  `db:"summary" json:"summary,omitempty"`
+	Summary      sql.NullString `db:"summary" json:"summary,omitempty"`
-	FixedVersion sql.NullString  `db:"fixed_version" json:"fixed_version,omitempty"`
+	FixedVersion sql.NullString `db:"fixed_version" json:"fixed_version,omitempty"`
 	CVSSScore    sql.NullFloat64 `db:"cvss_score" json:"cvss_score,omitempty"`
-	References   sql.NullString  `db:"references" json:"references,omitempty"`
+	References   sql.NullString `db:"references" json:"references,omitempty"`
-	FetchedAt    sql.NullTime    `db:"fetched_at" json:"fetched_at,omitempty"`
+	FetchedAt    sql.NullTime   `db:"fetched_at" json:"fetched_at,omitempty"`
-	CreatedAt    time.Time       `db:"created_at" json:"created_at"`
+	CreatedAt    time.Time      `db:"created_at" json:"created_at"`
-	UpdatedAt    time.Time       `db:"updated_at" json:"updated_at"`
+	UpdatedAt    time.Time      `db:"updated_at" json:"updated_at"`
 }
--- a/internal/database/version_purl_test.go
+++ b/internal/database/version_purl_test.go
@ -1,159 +0,0 @@
 package database
 import (
 	"database/sql"
 	"net/url"
 	"testing"
 	"time"
 )
 func TestVersionFromPURL(t *testing.T) {
 	tests := []struct {
 		name string
 		purl string
 		want string
 	}{
 		{"simple", "pkg:npm/lodash@4.17.21", "4.17.21"},
 		{"namespaced", "pkg:composer/symfony/console@6.0.0", "6.0.0"},
 		// Debian/Ubuntu versions routinely contain "+", which PURL encodes.
 		{"encoded plus", "pkg:deb/nmap@7.91%2Bdfsg1%2Breally7.80%2Bdfsg1-2ubuntu0.1", "7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1"},
 		{"encoded epoch", "pkg:deb/curl@1%3A7.81.0-1", "1:7.81.0-1"},
 		{"encoded plus with qualifier", "pkg:deb/nmap@7.91%2Bdfsg1?repository_url=http%3A%2F%2Fexample.com", "7.91+dfsg1"},
 		{"tilde is not encoded", "pkg:deb/foo@1.0~rc1", "1.0~rc1"},
 		{"no version", "pkg:npm/lodash", ""},
 		{"invalid escape passed through", "pkg:npm/lodash@1.0%zz", "1.0%zz"},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			if got := VersionFromPURL(tt.purl); got != tt.want {
 				t.Errorf("VersionFromPURL(%q) = %q, want %q", tt.purl, got, tt.want)
 			}
 			v := &Version{PURL: tt.purl}
 			if got := v.Version(); got != tt.want {
 				t.Errorf("Version.Version() for %q = %q, want %q", tt.purl, got, tt.want)
 			}
 		})
 	}
 }
 // TestVersionEscapedVersion checks the value the templates put in a URL. It
 // must survive the round trip back through the router: escaping here and
 // decoding per path segment on the way in has to yield the original version.
 func TestVersionEscapedVersion(t *testing.T) {
 	tests := []struct {
 		name string
 		purl string
 		want string
 	}{
 		{"simple", "pkg:npm/lodash@4.17.21", "4.17.21"},
 		// "+" is legal in a path segment, so it stays literal and the UI keeps
 		// showing the version the way Debian writes it.
 		{"plus stays literal", "pkg:deb/nmap@7.91%2Bdfsg1-2ubuntu0.1", "7.91+dfsg1-2ubuntu0.1"},
 		// A slash would otherwise split the version into two path segments.
 		{"slash", "pkg:golang/example@release%2F1", "release%2F1"},
 		// A question mark would otherwise start the query string.
 		{"question mark", "pkg:npm/example@v1%3Fbuild", "v1%3Fbuild"},
 		// A version containing a literal "%2B" is stored double-encoded; the
 		// link must re-encode it or it decodes back to "+" instead.
 		{"literal percent escape", "pkg:npm/example@1.0%252B", "1.0%252B"},
 		{"space", "pkg:npm/example@1.0%20beta", "1.0%20beta"},
 		{"no version", "pkg:npm/lodash", ""},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			v := &Version{PURL: tt.purl}
 			got := v.EscapedVersion()
 			if got != tt.want {
 				t.Errorf("EscapedVersion() for %q = %q, want %q", tt.purl, got, tt.want)
 			}
 			// The router decodes each path segment, which must give back the
 			// version the page displays.
 			decoded, err := url.PathUnescape(got)
 			if err != nil {
 				t.Fatalf("PathUnescape(%q) failed: %v", got, err)
 			}
 			if decoded != v.Version() {
 				t.Errorf("round trip for %q = %q, want %q", tt.purl, decoded, v.Version())
 			}
 		})
 	}
 }
 func TestVersionDisplayPURL(t *testing.T) {
 	tests := []struct {
 		name string
 		purl string
 		want string
 	}{
 		{"simple", "pkg:npm/lodash@4.17.21", "pkg:npm/lodash@4.17.21"},
 		{
 			"encoded plus",
 			"pkg:deb/nmap@7.91%2Bdfsg1%2Breally7.80%2Bdfsg1-2ubuntu0.1",
 			"pkg:deb/nmap@7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1",
 		},
 		{
 			"qualifier preserved",
 			"pkg:deb/nmap@7.91%2Bdfsg1?repository_url=http%3A%2F%2Fexample.com",
 			"pkg:deb/nmap@7.91+dfsg1?repository_url=http%3A%2F%2Fexample.com",
 		},
 		// The namespace is encoded too: MakePURLString("npm", "@babel/core", …)
 		// produces "pkg:npm/%40babel/core@…".
 		{"encoded npm scope", "pkg:npm/%40babel/core@7.0.0", "pkg:npm/@babel/core@7.0.0"},
 		{"encoded scope without version", "pkg:npm/%40babel/core", "pkg:npm/@babel/core"},
 		{"no version", "pkg:npm/lodash", "pkg:npm/lodash"},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			v := &Version{PURL: tt.purl}
 			if got := v.DisplayPURL(); got != tt.want {
 				t.Errorf("DisplayPURL() for %q = %q, want %q", tt.purl, got, tt.want)
 			}
 		})
 	}
 }
 // TestGetRecentlyCachedPackagesDecodesVersion guards the dashboard's "recently
 // cached" list, which derives the version from the version PURL.
 func TestGetRecentlyCachedPackagesDecodesVersion(t *testing.T) {
 	runWithBothDatabases(t, func(t *testing.T, db *DB) {
 		const versionPURL = "pkg:deb/nmap@7.91%2Bdfsg1%2Breally7.80%2Bdfsg1-2ubuntu0.1"
 		if err := db.UpsertPackage(&Package{
 			PURL: "pkg:deb/nmap", Ecosystem: "deb", Name: "nmap",
 		}); err != nil {
 			t.Fatalf("UpsertPackage failed: %v", err)
 		}
 		if err := db.UpsertVersion(&Version{
 			PURL: versionPURL, PackagePURL: "pkg:deb/nmap",
 		}); err != nil {
 			t.Fatalf("UpsertVersion failed: %v", err)
 		}
 		if err := db.UpsertArtifact(&Artifact{
 			VersionPURL: versionPURL,
 			Filename:    "nmap_7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1_amd64.deb",
 			UpstreamURL: "http://archive.ubuntu.com/ubuntu/pool/universe/n/nmap/nmap.deb",
 			StoragePath: sql.NullString{String: "/cache/nmap.deb", Valid: true},
 			FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 		}); err != nil {
 			t.Fatalf("UpsertArtifact failed: %v", err)
 		}
 		recent, err := db.GetRecentlyCachedPackages(10)
 		if err != nil {
 			t.Fatalf("GetRecentlyCachedPackages failed: %v", err)
 		}
 		if len(recent) != 1 {
 			t.Fatalf("expected 1 recent package, got %d", len(recent))
 		}
 		const want = "7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1"
 		if recent[0].Version != want {
 			t.Errorf("Version = %q, want %q", recent[0].Version, want)
 		}
 		if recent[0].VersionPURL != versionPURL {
 			t.Errorf("VersionPURL = %q, want %q", recent[0].VersionPURL, versionPURL)
 		}
 	})
 }
--- a/internal/enrichment/enrichment.go
+++ b/internal/enrichment/enrichment.go
@ -9,7 +9,6 @@ import (
 	"sync"
 	"time"
 	"github.com/git-pkgs/proxy/internal/packageurl"
 	"github.com/git-pkgs/purl"
 	"github.com/git-pkgs/registries"
 	_ "github.com/git-pkgs/registries/all" // Import all registry implementations
@ -68,10 +67,7 @@ type VulnInfo struct {
 // EnrichPackage fetches metadata for a package from registry APIs.
 func (s *Service) EnrichPackage(ctx context.Context, ecosystem, name string) (*PackageInfo, error) {
-	purlStr := packageurl.MakeString(ecosystem, name, "")
+	purlStr := purl.MakePURLString(ecosystem, name, "")
 	if purlStr == "" {
 		return nil, nil
 	}
 	pkg, err := registries.FetchPackageFromPURL(ctx, purlStr, s.regClient)
 	if err != nil {
@ -106,10 +102,7 @@ func (s *Service) EnrichPackage(ctx context.Context, ecosystem, name string) (*P
 // EnrichVersion fetches metadata for a specific package version.
 func (s *Service) EnrichVersion(ctx context.Context, ecosystem, name, version string) (*VersionInfo, error) {
-	purlStr := packageurl.MakeString(ecosystem, name, version)
+	purlStr := purl.MakePURLString(ecosystem, name, version)
 	if purlStr == "" {
 		return nil, nil
 	}
 	ver, err := registries.FetchVersionFromPURL(ctx, purlStr, s.regClient)
 	if err != nil {
@ -141,14 +134,9 @@ func (s *Service) EnrichVersion(ctx context.Context, ecosystem, name, version st
 // BulkEnrichPackages fetches metadata for multiple packages in parallel.
 func (s *Service) BulkEnrichPackages(ctx context.Context, packages []struct{ Ecosystem, Name string }) map[string]*PackageInfo {
-	purls := make([]string, 0, len(packages))
+	purls := make([]string, len(packages))
-	for _, pkg := range packages {
+	for i, pkg := range packages {
-		if purlStr := packageurl.MakeString(pkg.Ecosystem, pkg.Name, ""); purlStr != "" {
+		purls[i] = purl.MakePURLString(pkg.Ecosystem, pkg.Name, "")
 			purls = append(purls, purlStr)
 		}
 	}
 	if len(purls) == 0 {
 		return map[string]*PackageInfo{}
 	}
 	pkgData := registries.BulkFetchPackages(ctx, purls, s.regClient)
@ -159,10 +147,7 @@ func (s *Service) BulkEnrichPackages(ctx context.Context, packages []struct{ Eco
 			continue
 		}
-		p, err := purl.Parse(purlStr)
+		p, _ := purl.Parse(purlStr)
 		if err != nil {
 			continue
 		}
 		info := &PackageInfo{
 			Ecosystem:     p.Type,
 			Name:          pkg.Name,
@ -189,10 +174,7 @@ func (s *Service) BulkEnrichPackages(ctx context.Context, packages []struct{ Eco
 // CheckVulnerabilities queries for vulnerabilities affecting a package version.
 func (s *Service) CheckVulnerabilities(ctx context.Context, ecosystem, name, version string) ([]VulnInfo, error) {
-	p := packageurl.Make(ecosystem, name, version)
+	p := purl.MakePURL(ecosystem, name, version)
 	if p == nil {
 		return nil, nil
 	}
 	vulnList, err := s.vulnSource.Query(ctx, p)
 	if err != nil {
@ -219,6 +201,43 @@ func (s *Service) CheckVulnerabilities(ctx context.Context, ecosystem, name, ver
 	return results, nil
 }
 // BulkCheckVulnerabilities queries vulnerabilities for multiple package versions.
 func (s *Service) BulkCheckVulnerabilities(ctx context.Context, packages []struct{ Ecosystem, Name, Version string }) (map[string][]VulnInfo, error) {
 	purls := make([]*purl.PURL, len(packages))
 	for i, pkg := range packages {
 		purls[i] = purl.MakePURL(pkg.Ecosystem, pkg.Name, pkg.Version)
 	}
 	vulnResults, err := s.vulnSource.QueryBatch(ctx, purls)
 	if err != nil {
 		return nil, err
 	}
 	result := make(map[string][]VulnInfo, len(packages))
 	for i, vulnList := range vulnResults {
 		pkg := packages[i]
 		key := purl.MakePURLString(pkg.Ecosystem, pkg.Name, pkg.Version)
 		var infos []VulnInfo
 		for _, v := range vulnList {
 			info := VulnInfo{
 				ID:           v.ID,
 				Summary:      v.Summary,
 				Severity:     v.SeverityLevel(),
 				CVSSScore:    v.CVSSScore(),
 				FixedVersion: v.FixedVersion(pkg.Ecosystem, pkg.Name),
 			}
 			for _, ref := range v.References {
 				info.References = append(info.References, ref.URL)
 			}
 			infos = append(infos, info)
 		}
 		result[key] = infos
 	}
 	return result, nil
 }
 // IsOutdated checks if a version is older than the latest version.
 func (s *Service) IsOutdated(currentVersion, latestVersion string) bool {
 	if latestVersion == "" || currentVersion == "" {
@ -229,10 +248,7 @@ func (s *Service) IsOutdated(currentVersion, latestVersion string) bool {
 // GetLatestVersion fetches the latest version for a package.
 func (s *Service) GetLatestVersion(ctx context.Context, ecosystem, name string) (string, error) {
-	purlStr := packageurl.MakeString(ecosystem, name, "")
+	purlStr := purl.MakePURLString(ecosystem, name, "")
 	if purlStr == "" {
 		return "", nil
 	}
 	latest, err := registries.FetchLatestVersionFromPURL(ctx, purlStr, s.regClient)
 	if err != nil {
@ -272,6 +288,19 @@ func (s *Service) CategorizeLicense(license string) LicenseCategory {
 	return LicenseUnknown
 }
 // NormalizeLicense normalizes a license string to SPDX format.
 func (s *Service) NormalizeLicense(license string) string {
 	if license == "" {
 		return ""
 	}
 	if normalized, err := spdx.NormalizeExpressionLax(license); err == nil {
 		return normalized
 	}
 	return license
 }
 // EnrichmentResult contains all enrichment data for a package version.
 type EnrichmentResult struct {
 	Package         *PackageInfo
--- a/internal/enrichment/enrichment_test.go
+++ b/internal/enrichment/enrichment_test.go
@ -1,7 +1,6 @@
 package enrichment
 import (
 	"context"
 	"log/slog"
 	"os"
 	"testing"
@ -24,36 +23,6 @@ func TestNew(t *testing.T) {
 	}
 }
 func TestSwiftRegistryIdentitySkipsPURLDependentLookups(t *testing.T) {
 	svc := New(slog.New(slog.NewTextHandler(os.Stdout, nil)))
 	ctx := context.Background()
 	packageInfo, err := svc.EnrichPackage(ctx, "swift", "apple/example")
 	if err != nil || packageInfo != nil {
 		t.Errorf("EnrichPackage() = %#v, %v; want nil, nil", packageInfo, err)
 	}
 	versionInfo, err := svc.EnrichVersion(ctx, "swift", "apple/example", "1.2.3")
 	if err != nil || versionInfo != nil {
 		t.Errorf("EnrichVersion() = %#v, %v; want nil, nil", versionInfo, err)
 	}
 	vulnerabilities, err := svc.CheckVulnerabilities(ctx, "swift", "apple/example", "1.2.3")
 	if err != nil || vulnerabilities != nil {
 		t.Errorf("CheckVulnerabilities() = %#v, %v; want nil, nil", vulnerabilities, err)
 	}
 	latest, err := svc.GetLatestVersion(ctx, "swift", "apple/example")
 	if err != nil || latest != "" {
 		t.Errorf("GetLatestVersion() = %q, %v; want empty string, nil", latest, err)
 	}
 	packages := []struct{ Ecosystem, Name string }{{Ecosystem: "swift", Name: "apple/example"}}
 	if got := svc.BulkEnrichPackages(ctx, packages); len(got) != 0 {
 		t.Errorf("BulkEnrichPackages() = %#v, want empty result", got)
 	}
 }
 func TestIsOutdated(t *testing.T) {
 	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
 	svc := New(logger)
@ -105,3 +74,25 @@ func TestCategorizeLicense(t *testing.T) {
 		}
 	}
 }
 func TestNormalizeLicense(t *testing.T) {
 	logger := slog.New(slog.NewTextHandler(os.Stdout, nil))
 	svc := New(logger)
 	tests := []struct {
 		input    string
 		expected string
 	}{
 		{"MIT", "MIT"},
 		{"Apache 2", "Apache-2.0"},
 		{"Apache-2.0", "Apache-2.0"},
 		{"", ""},
 	}
 	for _, tc := range tests {
 		result := svc.NormalizeLicense(tc.input)
 		if result != tc.expected {
 			t.Errorf("NormalizeLicense(%q) = %q, want %q", tc.input, result, tc.expected)
 		}
 	}
 }
--- a/internal/handler/apk.go
+++ b/internal/handler/apk.go
@ -1,186 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"net/http"
 	"regexp"
 	"strings"
 )
 const (
 	apkEcosystem = "alpine"
 	// defaultAPKRepositoryName is the repository name used when no
 	// upstream.apk repositories are configured.
 	defaultAPKRepositoryName = "alpine"
 	// defaultAPKUpstream is the official Alpine Linux mirror.
 	defaultAPKUpstream = "https://dl-cdn.alpinelinux.org/alpine"
 	apkMatchCount      = 3 // full match + name + version
 )
 // APKHandler handles Alpine APK repository protocol requests. Each configured
 // upstream repository is mounted at /apk/{repository}/ and the remaining path
 // mirrors the upstream layout ({release}/{repo}/{arch}/{file}).
 //
 // Repository indexes (v2 APKINDEX.tar.gz, v3 Packages.adb) and detached
 // signatures are served byte-for-byte unchanged through the metadata cache so
 // apk signature verification keeps working. Package files are cached in the
 // shared artifact cache and stay available when the upstream is unreachable.
 type APKHandler struct {
 	proxy        *Proxy
 	proxyURL     string
 	repositories map[string]string
 }
 // NewAPKHandler creates an Alpine APK repository protocol handler.
 // When repositories is empty, a single repository named "alpine" pointing at
 // the official Alpine mirror is used.
 func NewAPKHandler(proxy *Proxy, proxyURL string, repositories map[string]string) *APKHandler {
 	h := &APKHandler{
 		proxy:        proxy,
 		proxyURL:     strings.TrimSuffix(proxyURL, "/"),
 		repositories: make(map[string]string, len(repositories)),
 	}
 	for name, repositoryURL := range repositories {
 		h.repositories[name] = strings.TrimSuffix(repositoryURL, "/")
 	}
 	if len(h.repositories) == 0 {
 		h.repositories[defaultAPKRepositoryName] = defaultAPKUpstream
 	}
 	return h
 }
 // Routes returns the HTTP handler for APK requests.
 // Mount this at /apk on your router.
 func (h *APKHandler) Routes() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet && r.Method != http.MethodHead {
 			http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
 			return
 		}
 		path := strings.TrimPrefix(r.URL.Path, "/")
 		if containsPathTraversal(path) {
 			http.Error(w, "invalid path", http.StatusBadRequest)
 			return
 		}
 		repository, rest, ok := strings.Cut(path, "/")
 		upstreamURL, found := h.repositories[repository]
 		if !ok || rest == "" || !found {
 			http.NotFound(w, r)
 			return
 		}
 		switch {
 		case isAPKIndex(rest) || isAPKSignature(rest):
 			// Indexes and detached signatures are signed upstream metadata.
 			// Cache them with the metadata TTL and serve the stored bytes
 			// unchanged so apk verification continues to work.
 			h.handleMetadata(w, r, repository, upstreamURL, rest)
 		case strings.HasSuffix(rest, ".apk"):
 			// Package downloads - cache these in the artifact cache.
 			h.handlePackageDownload(w, r, repository, upstreamURL, rest)
 		default:
 			// Other files - proxy directly.
 			h.proxyFile(w, r, upstreamURL, rest)
 		}
 	})
 }
 // isAPKIndex reports whether the path names a repository index:
 // APKINDEX.tar.gz (apk v2) or Packages.adb (apk v3).
 func isAPKIndex(path string) bool {
 	base := path[strings.LastIndex(path, "/")+1:]
 	return base == "APKINDEX.tar.gz" || base == "Packages.adb"
 }
 // isAPKSignature reports whether the path names a detached signature file.
 func isAPKSignature(path string) bool {
 	return strings.HasSuffix(path, ".sig") || strings.HasSuffix(path, ".rsa.pub")
 }
 // handlePackageDownload fetches and caches .apk packages.
 // Path format: {release}/{repo}/{arch}/{name}-{version}-r{rel}.apk
 // Example: v3.22/main/x86_64/busybox-1.37.0-r12.apk
 //
 // APK filenames do not include the architecture, so the same filename can hold
 // different bytes per architecture (and per release). The full request path is
 // therefore part of the cache identity.
 func (h *APKHandler) handlePackageDownload(w http.ResponseWriter, r *http.Request, repository, upstreamURL, path string) {
 	name, version, arch := h.parseAPKPath(path)
 	if name == "" {
 		// Can't parse, just proxy directly
 		h.proxyFile(w, r, upstreamURL, path)
 		return
 	}
 	downloadURL := upstreamURL + "/" + path
 	cacheFilename := repository + "/" + path
 	h.proxy.Logger.Info("apk package download",
 		"repository", repository, "name", name, "version", version, "arch", arch)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), apkEcosystem, name, version, cacheFilename, downloadURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch package")
 		return
 	}
 	if result.Artifact.MediaType == "" {
 		result.Artifact.MediaType = "application/octet-stream"
 	}
 	serveArtifact(w, r.Method, result)
 }
 // handleMetadata serves repository indexes and signatures through the
 // metadata cache. Stored bytes are re-served verbatim, which keeps embedded
 // and detached signatures valid.
 func (h *APKHandler) handleMetadata(w http.ResponseWriter, r *http.Request, repository, upstreamURL, path string) {
 	h.proxy.ProxyCached(w, r, upstreamURL+"/"+path, apkEcosystem,
 		h.metadataCacheKey(repository, upstreamURL, path), "*/*")
 }
 // metadataCacheKey derives the metadata cache key from the repository name,
 // its upstream URL, and the request path. Hashing the identity keeps distinct
 // repositories from sharing cache entries (repository names may contain '_'
 // and a separator-based key would be ambiguous) and drops cached entries when
 // a repository is repointed at a different upstream, mirroring
 // HelmHandler.indexCacheKey.
 func (h *APKHandler) metadataCacheKey(repository, upstreamURL, path string) string {
 	identity := repository + "\x00" + upstreamURL + "\x00" + path
 	digest := sha256.Sum256([]byte(identity))
 	return hex.EncodeToString(digest[:])
 }
 // proxyFile proxies any file directly without caching.
 func (h *APKHandler) proxyFile(w http.ResponseWriter, r *http.Request, upstreamURL, path string) {
 	h.proxy.ProxyFile(w, r, upstreamURL+"/"+path)
 }
 // apkPackagePattern matches .apk filenames to extract name and version.
 // Format: {name}-{version}-r{rel}.apk where version starts with a digit.
 // Examples:
 //   - busybox-1.37.0-r12.apk
 //   - alpine-baselayout-data-3.7.0-r0.apk
 var apkPackagePattern = regexp.MustCompile(`^(.+)-(\d[^-]*-r\d+)\.apk$`)
 // parseAPKPath extracts package info from a path containing an APK filename.
 // The architecture is taken from the parent directory since APK filenames do
 // not include it.
 func (h *APKHandler) parseAPKPath(path string) (name, version, arch string) {
 	segments := strings.Split(path, "/")
 	filename := segments[len(segments)-1]
 	if len(segments) > 1 {
 		arch = segments[len(segments)-2]
 	}
 	matches := apkPackagePattern.FindStringSubmatch(filename)
 	if len(matches) != apkMatchCount {
 		return "", "", ""
 	}
 	return matches[1], matches[2], arch
 }
--- a/internal/handler/apk_test.go
+++ b/internal/handler/apk_test.go
@ -1,362 +0,0 @@
 package handler
 import (
 	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"sync/atomic"
 	"testing"
 	"time"
 	"github.com/git-pkgs/registries/fetch"
 )
 func TestAPKHandler_parseAPKPath(t *testing.T) {
 	h := &APKHandler{}
 	assertPathParser(t, "parseAPKPath", h.parseAPKPath, []pathParseCase{
 		{"v3.22/main/x86_64/busybox-1.37.0-r12.apk", "busybox", "1.37.0-r12", "x86_64"},
 		{"v3.22/main/aarch64/alpine-baselayout-data-3.7.0-r0.apk", "alpine-baselayout-data", "3.7.0-r0", "aarch64"},
 		{"edge/community/x86_64/openjdk21-jre-21.0.2_p13-r1.apk", "openjdk21-jre", "21.0.2_p13-r1", "x86_64"},
 		{"busybox-1.37.0-r12.apk", "busybox", "1.37.0-r12", ""},
 		{"v3.22/main/x86_64/invalid.apk", "", "", ""},
 		{"v3.22/main/x86_64/not-an-apk-file", "", "", ""},
 	})
 }
 func TestAPKHandler_Routes(t *testing.T) {
 	h := NewAPKHandler(nil, "http://localhost:8080", nil)
 	assertRoutesBasics(t, h.Routes(), "/alpine/v3.22/main/x86_64/APKINDEX.tar.gz", "/alpine/v3.22/../../../etc/passwd")
 }
 func TestAPKHandler_DefaultsToOfficialMirror(t *testing.T) {
 	h := NewAPKHandler(nil, "http://localhost:8080", nil)
 	if got := h.repositories[defaultAPKRepositoryName]; got != defaultAPKUpstream {
 		t.Errorf("default repository = %q, want %q", got, defaultAPKUpstream)
 	}
 }
 func TestAPKHandler_UnknownRepositoryReturns404(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewAPKHandler(proxy, "http://localhost:8080", map[string]string{"alpine": "https://example.test"})
 	for _, target := range []string{
 		"/unknown/v3.22/main/x86_64/APKINDEX.tar.gz",
 		"/alpine",
 		"/",
 	} {
 		w := serveAPKRequest(h, target)
 		if w.Code != http.StatusNotFound {
 			t.Errorf("%s: status = %d, want 404", target, w.Code)
 		}
 	}
 }
 // TestAPKHandler_MetadataCacheKeysDoNotCollideAcrossRepositories guards the
 // hashed metadata cache key: with a separator-based key, repositories named
 // "alpine" and "alpine_edge" would share cache entries for
 // /alpine/edge/main/x86_64/APKINDEX.tar.gz and
 // /alpine_edge/main/x86_64/APKINDEX.tar.gz, serving one repository's signed
 // index to clients of the other.
 func TestAPKHandler_MetadataCacheKeysDoNotCollideAcrossRepositories(t *testing.T) {
 	indexA := "signed index of repository A"
 	upstreamA := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != "/edge/main/x86_64/APKINDEX.tar.gz" {
 			http.NotFound(w, r)
 			return
 		}
 		_, _ = fmt.Fprint(w, indexA)
 	}))
 	defer upstreamA.Close()
 	indexB := "signed index of repository B"
 	upstreamB := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != "/main/x86_64/APKINDEX.tar.gz" {
 			http.NotFound(w, r)
 			return
 		}
 		_, _ = fmt.Fprint(w, indexB)
 	}))
 	defer upstreamB.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = http.DefaultClient
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{
 		"alpine":      upstreamA.URL,
 		"alpine_edge": upstreamB.URL,
 	})
 	first := serveAPKRequest(h, "/alpine/edge/main/x86_64/APKINDEX.tar.gz")
 	if first.Code != http.StatusOK || first.Body.String() != indexA {
 		t.Fatalf("repository A: status = %d, body = %q, want 200 %q", first.Code, first.Body.String(), indexA)
 	}
 	// Served within the metadata TTL: a colliding key would return indexA here.
 	second := serveAPKRequest(h, "/alpine_edge/main/x86_64/APKINDEX.tar.gz")
 	if second.Code != http.StatusOK {
 		t.Fatalf("repository B: status = %d, want 200: %s", second.Code, second.Body.String())
 	}
 	if second.Body.String() != indexB {
 		t.Errorf("repository B served %q, want %q (cache key collision)", second.Body.String(), indexB)
 	}
 }
 // TestAPKHandler_IndexesServedUnchanged covers v2 (APKINDEX.tar.gz) and v3
 // (Packages.adb) indexes plus detached signatures: bytes must be served
 // unchanged so apk signature verification keeps working, and within the
 // metadata TTL cached copies must be served without contacting the upstream
 // (the stale-after-TTL fallback itself is covered by the shared ProxyCached
 // tests).
 func TestAPKHandler_IndexesServedUnchanged(t *testing.T) {
 	files := map[string][]byte{
 		"/v3.22/main/x86_64/APKINDEX.tar.gz":  []byte("\x1f\x8b\x08v2-index-with-embedded-signature"),
 		"/v3.22/main/x86_64/Packages.adb":     []byte("ADB.v3-index-binary\x00payload"),
 		"/v3.22/main/x86_64/Packages.adb.sig": []byte("detached-signature-bytes"),
 	}
 	var available atomic.Bool
 	available.Store(true)
 	var upstreamRequests atomic.Int32
 	var authHeader string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		authHeader = r.Header.Get("Authorization")
 		data, ok := files[r.URL.Path]
 		if !ok {
 			http.NotFound(w, r)
 			return
 		}
 		upstreamRequests.Add(1)
 		w.Header().Set("Content-Type", "application/octet-stream")
 		_, _ = w.Write(data)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	proxy.AuthForURL = func(string) (string, string) {
 		return "Authorization", "Bearer apk-token"
 	}
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{"alpine": upstream.URL})
 	for path, want := range files {
 		w := serveAPKRequest(h, "/alpine"+path)
 		if w.Code != http.StatusOK {
 			t.Fatalf("%s: status = %d, want 200: %s", path, w.Code, w.Body.String())
 		}
 		if got := w.Body.Bytes(); string(got) != string(want) {
 			t.Errorf("%s: body altered:\ngot  %q\nwant %q", path, got, want)
 		}
 	}
 	if authHeader != "Bearer apk-token" {
 		t.Errorf("Authorization = %q, want %q", authHeader, "Bearer apk-token")
 	}
 	// Upstream goes away: cached indexes must still be served, unchanged.
 	available.Store(false)
 	requestsBefore := upstreamRequests.Load()
 	for path, want := range files {
 		w := serveAPKRequest(h, "/alpine"+path)
 		if w.Code != http.StatusOK {
 			t.Fatalf("%s offline: status = %d, want 200: %s", path, w.Code, w.Body.String())
 		}
 		if got := w.Body.Bytes(); string(got) != string(want) {
 			t.Errorf("%s offline: body altered:\ngot  %q\nwant %q", path, got, want)
 		}
 	}
 	if got := upstreamRequests.Load(); got != requestsBefore {
 		t.Errorf("upstream requests during offline reads = %d, want %d", got, requestsBefore)
 	}
 }
 // TestAPKHandler_PackageDownloadCachesPerArch covers package downloads, cache
 // hits, offline reads, and that identically named packages for different
 // architectures are cached separately.
 func TestAPKHandler_PackageDownloadCachesPerArch(t *testing.T) {
 	packages := map[string][]byte{
 		"/v3.22/main/x86_64/busybox-1.37.0-r12.apk":  []byte("x86_64 package bytes"),
 		"/v3.22/main/aarch64/busybox-1.37.0-r12.apk": []byte("aarch64 package bytes"),
 	}
 	var available atomic.Bool
 	available.Store(true)
 	var packageRequests atomic.Int32
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		data, ok := packages[r.URL.Path]
 		if !ok {
 			http.NotFound(w, r)
 			return
 		}
 		packageRequests.Add(1)
 		w.Header().Set("Content-Type", "application/octet-stream")
 		_, _ = w.Write(data)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{"alpine": upstream.URL})
 	for path, want := range packages {
 		w := serveAPKRequest(h, "/alpine"+path)
 		if w.Code != http.StatusOK {
 			t.Fatalf("%s: status = %d, want 200: %s", path, w.Code, w.Body.String())
 		}
 		if got := w.Body.String(); got != string(want) {
 			t.Errorf("%s: body = %q, want %q", path, got, want)
 		}
 	}
 	if got := packageRequests.Load(); got != 2 {
 		t.Fatalf("upstream package requests = %d, want 2 (one per architecture)", got)
 	}
 	// Second round must be served from cache, even with the upstream down.
 	available.Store(false)
 	for path, want := range packages {
 		w := serveAPKRequest(h, "/alpine"+path)
 		if w.Code != http.StatusOK {
 			t.Fatalf("%s cached: status = %d, want 200: %s", path, w.Code, w.Body.String())
 		}
 		if got := w.Body.String(); got != string(want) {
 			t.Errorf("%s cached: body = %q, want %q", path, got, want)
 		}
 	}
 	if got := packageRequests.Load(); got != 2 {
 		t.Errorf("upstream package requests after cache hits = %d, want 2", got)
 	}
 }
 func TestAPKHandler_PackageDownloadSendsUpstreamAuth(t *testing.T) {
 	var authHeader string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		authHeader = r.Header.Get("Authorization")
 		if authHeader != "Bearer apk-token" {
 			w.WriteHeader(http.StatusUnauthorized)
 			return
 		}
 		_, _ = fmt.Fprint(w, "private package")
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	client := upstream.Client()
 	client.Transport = &authRoundTripper{base: client.Transport, header: "Authorization", value: "Bearer apk-token"}
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(client), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{"private": upstream.URL})
 	w := serveAPKRequest(h, "/private/v3.22/main/x86_64/busybox-1.37.0-r12.apk")
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if w.Body.String() != "private package" {
 		t.Errorf("body = %q, want %q", w.Body.String(), "private package")
 	}
 	if authHeader != "Bearer apk-token" {
 		t.Errorf("Authorization = %q, want %q", authHeader, "Bearer apk-token")
 	}
 }
 func TestAPKHandler_UnparseablePackageProxiedDirectly(t *testing.T) {
 	var requested string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		requested = r.URL.Path
 		_, _ = fmt.Fprint(w, "raw bytes")
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{"alpine": upstream.URL})
 	w := serveAPKRequest(h, "/alpine/v3.22/main/x86_64/no-version.apk")
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if requested != "/v3.22/main/x86_64/no-version.apk" {
 		t.Errorf("upstream path = %q, want %q", requested, "/v3.22/main/x86_64/no-version.apk")
 	}
 	if w.Body.String() != "raw bytes" {
 		t.Errorf("body = %q, want %q", w.Body.String(), "raw bytes")
 	}
 }
 // authRoundTripper adds a static auth header, mimicking the server's
 // authentication-aware upstream transport.
 type authRoundTripper struct {
 	base   http.RoundTripper
 	header string
 	value  string
 }
 func (a *authRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
 	req = req.Clone(req.Context())
 	req.Header.Set(a.header, a.value)
 	base := a.base
 	if base == nil {
 		base = http.DefaultTransport
 	}
 	return base.RoundTrip(req)
 }
 // TestAPKHandler_PackageHeadOmitsBody verifies that HEAD requests for cached
 // packages return headers (including Content-Length) without a body.
 func TestAPKHandler_PackageHeadOmitsBody(t *testing.T) {
 	pkg := []byte("package bytes")
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/octet-stream")
 		_, _ = w.Write(pkg)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewAPKHandler(proxy, "http://proxy.example", map[string]string{"alpine": upstream.URL})
 	target := "/alpine/v3.22/main/x86_64/busybox-1.37.0-r12.apk"
 	if w := serveAPKRequest(h, target); w.Code != http.StatusOK {
 		t.Fatalf("seeding GET: status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodHead, target, nil))
 	if w.Code != http.StatusOK {
 		t.Fatalf("HEAD: status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.Len(); got != 0 {
 		t.Errorf("HEAD body length = %d, want 0", got)
 	}
 	if got := w.Header().Get("Content-Length"); got != fmt.Sprint(len(pkg)) {
 		t.Errorf("HEAD Content-Length = %q, want %d", got, len(pkg))
 	}
 }
 func serveAPKRequest(h *APKHandler, target string) *httptest.ResponseRecorder {
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodGet, target, nil))
 	return w
 }
--- a/internal/handler/cargo.go
+++ b/internal/handler/cargo.go
@ -1,23 +1,16 @@
 package handler
 import (
 	"bufio"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
 	"strings"
 	"time"
 )
 const (
 	cargoUpstream     = "https://index.crates.io"
 	cargoDownloadBase = "https://static.crates.io/crates"
 	cargoIndexLen1 = 1
 	cargoIndexLen2 = 2
 	cargoIndexLen3 = 3
 )
 // CargoHandler handles cargo registry protocol requests.
@ -29,18 +22,11 @@ type CargoHandler struct {
 }
 // NewCargoHandler creates a new cargo protocol handler.
-func NewCargoHandler(proxy *Proxy, proxyURL, indexURL, downloadURL string) *CargoHandler {
+func NewCargoHandler(proxy *Proxy, proxyURL string) *CargoHandler {
 	if strings.TrimSpace(indexURL) == "" {
 		indexURL = cargoUpstream
 	}
 	if strings.TrimSpace(downloadURL) == "" {
 		downloadURL = cargoDownloadBase
 	}
 	return &CargoHandler{
 		proxy:       proxy,
-		indexURL:    strings.TrimSuffix(indexURL, "/"),
+		indexURL:    cargoUpstream,
-		downloadURL: strings.TrimSuffix(downloadURL, "/"),
+		downloadURL: cargoDownloadBase,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 }
@ -70,7 +56,7 @@ func (h *CargoHandler) Routes() http.Handler {
 // CargoConfig is the registry configuration returned by config.json.
 type CargoConfig struct {
-	DL  string `json:"dl"`
+	DL string `json:"dl"`
 	API string `json:"api,omitempty"`
 }
@ -80,7 +66,7 @@ func (h *CargoHandler) handleConfig(w http.ResponseWriter, r *http.Request) {
 		DL: h.proxyURL + "/cargo/crates/{crate}/{version}/download",
 	}
-	w.Header().Set(headerContentType, "application/json")
+	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(config)
 }
@ -94,76 +80,44 @@ func (h *CargoHandler) handleIndex(w http.ResponseWriter, r *http.Request) {
 	h.proxy.Logger.Info("cargo index request", "crate", name)
 	// Build the index path
 	indexPath := h.buildIndexPath(name)
 	upstreamURL := fmt.Sprintf("%s/%s", h.indexURL, indexPath)
-	body, contentType, err := h.proxy.FetchOrCacheMetadata(r.Context(), "cargo", name, upstreamURL, "text/plain")
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "internal error", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		if errors.Is(err, ErrUpstreamNotFound) {
 			http.Error(w, "not found", http.StatusNotFound)
 			return
 		}
 		h.proxy.Logger.Error("failed to fetch upstream index", "error", err)
 		http.Error(w, "failed to fetch from upstream", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
-	if contentType == "" {
+	if resp.StatusCode == http.StatusNotFound {
-		contentType = "text/plain; charset=utf-8"
+		http.Error(w, "not found", http.StatusNotFound)
 		return
 	}
-
+	if resp.StatusCode != http.StatusOK {
-	w.Header().Set(headerContentType, contentType)
+		http.Error(w, fmt.Sprintf("upstream returned %d", resp.StatusCode), http.StatusBadGateway)
 	w.WriteHeader(http.StatusOK)
 	h.applyCooldownFiltering(w, body)
 }
 type crateIndexEntry struct {
 	Name        string `json:"name"`
 	Version     string `json:"vers"`
 	PublishTime string `json:"pubtime,omitempty"`
 }
 func (h *CargoHandler) applyCooldownFiltering(downstreamResponse http.ResponseWriter, body []byte) {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		_, _ = downstreamResponse.Write(body)
 		return
 	}
-	scanner := bufio.NewScanner(strings.NewReader(string(body)))
+	// Copy headers and body
-
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
-	for scanner.Scan() {
+	if etag := resp.Header.Get("ETag"); etag != "" {
-		line := scanner.Text()
+		w.Header().Set("ETag", etag)
-
+	}
-		var crate crateIndexEntry
+	if lastMod := resp.Header.Get("Last-Modified"); lastMod != "" {
-		err := json.Unmarshal([]byte(line), &crate)
+		w.Header().Set("Last-Modified", lastMod)
 		if err != nil {
 			h.proxy.Logger.Error("failed to parse json entry in index", "error", err)
 			continue
 		}
 		publishedAt, err := time.Parse(time.RFC3339, crate.PublishTime)
 		if crate.PublishTime == "" || err != nil {
 			_, _ = downstreamResponse.Write([]byte(line + "\n"))
 			continue
 		}
 		cratePURL := canonicalPackagePURL("cargo", crate.Name)
 		if !h.proxy.Cooldown.IsAllowed("cargo", cratePURL, publishedAt) {
 			h.proxy.Logger.Info("cooldown: filtering cargo version",
 				"crate", crate.Name, "version", crate.Version,
 				"published", crate.PublishTime)
 			continue
 		}
 		_, _ = downstreamResponse.Write([]byte(line + "\n"))
 	}
-	if err := scanner.Err(); err != nil {
+	w.WriteHeader(http.StatusOK)
-		h.proxy.Logger.Error("error reading index response", "error", err)
+	_, _ = io.Copy(w, resp.Body)
 	}
 }
 // buildIndexPath builds the sparse index path for a crate name.
@ -171,11 +125,11 @@ func (h *CargoHandler) buildIndexPath(name string) string {
 	name = strings.ToLower(name)
 	switch len(name) {
-	case cargoIndexLen1:
+	case 1:
 		return fmt.Sprintf("1/%s", name)
-	case cargoIndexLen2:
+	case 2:
 		return fmt.Sprintf("2/%s", name)
-	case cargoIndexLen3:
+	case 3:
 		return fmt.Sprintf("3/%c/%s", name[0], name)
 	default:
 		return fmt.Sprintf("%s/%s/%s", name[0:2], name[2:4], name)
@ -197,17 +151,10 @@ func (h *CargoHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
 	h.proxy.Logger.Info("cargo download request",
 		"crate", name, "version", version, "filename", filename)
-	downloadURL := fmt.Sprintf(
+	result, err := h.proxy.GetOrFetchArtifact(r.Context(), "cargo", name, version, filename)
 		"%s/%s/%s",
 		h.downloadURL,
 		url.PathEscape(name),
 		url.PathEscape(filename),
 	)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), "cargo", name, version, filename, downloadURL,
 	)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch crate")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch crate", http.StatusBadGateway)
 		return
 	}
--- a/internal/handler/cargo_test.go
+++ b/internal/handler/cargo_test.go
@ -2,22 +2,15 @@ package handler
 import (
 	"encoding/json"
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 	"github.com/git-pkgs/registries/fetch"
 )
 func cargoTestProxy() *Proxy {
 	return &Proxy{
-		Logger:     slog.Default(),
+		Logger: slog.Default(),
 		HTTPClient: http.DefaultClient,
 	}
 }
@ -34,8 +27,8 @@ func TestCargoBuildIndexPath(t *testing.T) {
 		{"abcd", "ab/cd/abcd"},
 		{"serde", "se/rd/serde"},
 		{"tokio", "to/ki/tokio"},
-		{"A", "1/a"},             // lowercase
+		{"A", "1/a"},                      // lowercase
-		{"SERDE", "se/rd/serde"}, // lowercase
+		{"SERDE", "se/rd/serde"},          // lowercase
 		{"rand_core", "ra/nd/rand_core"},
 	}
@ -72,75 +65,6 @@ func TestCargoConfigEndpoint(t *testing.T) {
 	}
 }
 func TestCargoHandlerUsesConfiguredUpstreams(t *testing.T) {
 	t.Run("index", func(t *testing.T) {
 		var requestPath, authHeader string
 		upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			requestPath = r.URL.Path
 			authHeader = r.Header.Get("Authorization")
 			if authHeader != "Bearer cargo-token" {
 				w.WriteHeader(http.StatusUnauthorized)
 				return
 			}
 			w.Header().Set("Content-Type", "text/plain")
 			_, _ = io.WriteString(w, `{"name":"serde","vers":"1.0.0"}`)
 		}))
 		defer upstream.Close()
 		proxy, _, _, _ := setupTestProxy(t)
 		proxy.HTTPClient = upstream.Client()
 		proxy.AuthForURL = func(string) (string, string) {
 			return "Authorization", "Bearer cargo-token"
 		}
 		h := NewCargoHandler(
 			proxy,
 			"http://proxy.test",
 			upstream.URL+"/index/",
 			"https://crates.example.test/files/",
 		)
 		req := httptest.NewRequest(http.MethodGet, "/se/rd/serde", nil)
 		w := httptest.NewRecorder()
 		h.Routes().ServeHTTP(w, req)
 		if w.Code != http.StatusOK {
 			t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 		}
 		if requestPath != "/index/se/rd/serde" {
 			t.Errorf("upstream path = %q, want %q", requestPath, "/index/se/rd/serde")
 		}
 		if authHeader != "Bearer cargo-token" {
 			t.Errorf("Authorization = %q, want %q", authHeader, "Bearer cargo-token")
 		}
 	})
 	t.Run("download", func(t *testing.T) {
 		proxy, _, _, artifactFetcher := setupTestProxy(t)
 		artifactFetcher.artifact = &fetch.Artifact{
 			Body:        io.NopCloser(strings.NewReader("crate")),
 			ContentType: "application/gzip",
 		}
 		h := NewCargoHandler(
 			proxy,
 			"http://proxy.test",
 			"https://index.example.test/root/",
 			"https://crates.example.test/files/",
 		)
 		req := httptest.NewRequest(http.MethodGet, "/crates/serde/1.0.0/download", nil)
 		w := httptest.NewRecorder()
 		h.Routes().ServeHTTP(w, req)
 		if w.Code != http.StatusOK {
 			t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 		}
 		want := "https://crates.example.test/files/serde/serde-1.0.0.crate"
 		if artifactFetcher.fetchedURL != want {
 			t.Errorf("fetched URL = %q, want %q", artifactFetcher.fetchedURL, want)
 		}
 	})
 }
 func TestCargoIndexProxy(t *testing.T) {
 	// Create a mock upstream index server
 	indexContent := `{"name":"serde","vers":"1.0.0","deps":[],"cksum":"abc123"}
@ -221,57 +145,3 @@ func TestCargoRoutes(t *testing.T) {
 		t.Errorf("config.json status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
 type filterTestCase struct {
 	line     string
 	expected bool
 }
 func TestCargoCooldown(t *testing.T) {
 	now := time.Now()
 	createCase := func(name string, version string, age time.Duration, expected bool) filterTestCase {
 		return filterTestCase{line: `{"name":"` + name + `","vers":"` + version + `","cksum":"abcd","features":{},"yanked":false,"pubtime":"` + now.Add(-1*age).Format(time.RFC3339) + `"}`, expected: expected}
 	}
 	testCases := []filterTestCase{
 		// one week ago
 		createCase("serde", "1.0.0", 168*time.Hour, true),
 		// one hour ago
 		createCase("serde", "1.0.1", 1*time.Hour, false),
 		// two hours ago with custom filter (1h)
 		createCase("tokio", "1.0.0", 2*time.Hour, true),
 		// one hour ago with custom filter (1h)
 		createCase("tokio", "1.0.0", 1*time.Minute, false),
 	}
 	var testInput strings.Builder
 	var expectedOutput strings.Builder
 	for _, testCase := range testCases {
 		testInput.WriteString(testCase.line + "\n")
 		if testCase.expected {
 			expectedOutput.WriteString(testCase.line + "\n")
 		}
 	}
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default:  "3d",
 		Packages: map[string]string{"pkg:cargo/tokio": "1h"},
 	}
 	h := &CargoHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	recorder := httptest.NewRecorder()
 	h.applyCooldownFiltering(recorder, []byte(testInput.String()))
 	output := recorder.Body.String()
 	if output != expectedOutput.String() {
 		t.Errorf("output = %q, want %q", output, expectedOutput.String())
 	}
 }
--- a/internal/handler/coalesce_semantics_test.go
+++ b/internal/handler/coalesce_semantics_test.go
@ -1,615 +0,0 @@
 package handler
 import (
 	"context"
 	"errors"
 	"io"
 	"strings"
 	"sync"
 	"testing"
 	"time"
 	"github.com/git-pkgs/artifacts"
 	"github.com/git-pkgs/registries/fetch"
 )
 // runConcurrent runs fn in n goroutines released together and returns their errors.
 func runConcurrent(n int, fn func(i int) error) []error {
 	errs := make([]error, n)
 	start := make(chan struct{})
 	var wg sync.WaitGroup
 	for i := 0; i < n; i++ {
 		wg.Add(1)
 		go func(i int) {
 			defer wg.Done()
 			<-start
 			errs[i] = fn(i)
 		}(i)
 	}
 	close(start)
 	wg.Wait()
 	return errs
 }
 // artifactBody builds a one-shot upstream artifact carrying the given bytes.
 func artifactBody(content string) *fetch.Artifact {
 	return &fetch.Artifact{
 		Body:        io.NopCloser(strings.NewReader(content)),
 		ContentType: "application/gzip",
 	}
 }
 // drain consumes and closes a CacheResult reader, if there is one.
 func drain(res *CacheResult) {
 	if res != nil && res.Reader != nil {
 		_, _ = io.Copy(io.Discard, res.Reader)
 		_ = res.Reader.Close()
 	}
 }
 // TestCoalesceKey_DifferentUpstreamHashDoesNotShare is the safety property that
 // makes coalescing sound: callers expecting different bytes must never share a
 // fetch, so a re-published version cannot serve stale bytes to a caller that
 // asked for the new digest.
 func TestCoalesceKey_DifferentUpstreamHashDoesNotShare(t *testing.T) {
 	const content = "artifact bytes"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: content, delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	// The digest must carry the "sha256:" prefix; without it the API treats the
 	// value as unverifiable and clears the hash, which would legitimately let
 	// the two callers share one fetch.
 	hashes := []string{
 		"sha256:" + sha256Hex(content),
 		"sha256:" + sha256Hex("something else entirely"),
 	}
 	_ = runConcurrent(2, func(i int) error {
 		res, err := proxy.GetOrFetchArtifactFromURLWithDigest(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz",
 			"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz", hashes[i])
 		drain(res)
 		return err
 	})
 	if got := fetcher.calls.Load(); got != 2 {
 		t.Errorf("upstream fetches = %d, want 2: callers expecting different digests must not share a fetch", got)
 	}
 }
 // TestCoalesceKey_HashCasingSharesOneFetch is the other half of that property.
 // artifactHashMatches compares digests case-insensitively, so one digest in two
 // casings describes one artifact and must not split into two fetches.
 func TestCoalesceKey_HashCasingSharesOneFetch(t *testing.T) {
 	const content = "artifact bytes"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: content, delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	hex := sha256Hex(content)
 	digests := []string{"sha256:" + hex, "sha256:" + strings.ToUpper(hex)}
 	for i, err := range runConcurrent(2, func(i int) error {
 		res, err := proxy.GetOrFetchArtifactFromURLWithDigest(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz",
 			"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz", digests[i])
 		drain(res)
 		return err
 	}) {
 		if err != nil {
 			t.Fatalf("caller %d failed: %v", i, err)
 		}
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1: one digest in two casings is one artifact", got)
 	}
 }
 // TestCoalesceKey_DifferentDownloadURLDoesNotShare covers the other half of the
 // key: same package, different upstream URL, must not collapse into one fetch.
 func TestCoalesceKey_DifferentDownloadURLDoesNotShare(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	urls := []string{
 		"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz",
 		"https://mirror.example.com/pkg/-/pkg-1.0.0.tgz",
 	}
 	_ = runConcurrent(2, func(i int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", urls[i])
 		drain(res)
 		return err
 	})
 	if got := fetcher.calls.Load(); got != 2 {
 		t.Errorf("upstream fetches = %d, want 2: different upstream URLs must not share a fetch", got)
 	}
 }
 // TestCoalesceKey_DistinctArtifactsDoNotSerialize guards against an over-broad
 // key: four packages fetched at once must still produce four fetches.
 func TestCoalesceKey_DistinctArtifactsDoNotSerialize(t *testing.T) {
 	const n = 4
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	names := []string{"alpha", "beta", "gamma", "delta"}
 	errs := runConcurrent(n, func(i int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", names[i], "1.0.0", names[i]+"-1.0.0.tgz",
 			"https://registry.npmjs.org/"+names[i]+"/-/"+names[i]+"-1.0.0.tgz")
 		drain(res)
 		return err
 	})
 	for i, err := range errs {
 		if err != nil {
 			t.Errorf("caller %d (%s): %v", i, names[i], err)
 		}
 	}
 	if got := fetcher.calls.Load(); got != n {
 		t.Errorf("upstream fetches = %d, want %d: distinct artifacts must not share a fetch", got, n)
 	}
 }
 // TestCoalesce_FailedFetchReachesEveryCallerAndIsRetriable verifies both claims
 // in coalesceFetch's doc comment: a failed fetch reaches every caller sharing
 // it, and the key is released so a later request retries.
 func TestCoalesce_FailedFetchReachesEveryCallerAndIsRetriable(t *testing.T) {
 	const callers = 8
 	proxy, _, _, fetcher := setupTestProxy(t)
 	boom := errors.New("upstream unavailable")
 	fetcher.fetchErr = boom
 	errs := runConcurrent(callers, func(int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz",
 			"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz")
 		drain(res)
 		return err
 	})
 	for i, err := range errs {
 		if err == nil {
 			t.Errorf("caller %d: got nil error, want the shared fetch's failure", i)
 		} else if !errors.Is(err, boom) {
 			t.Errorf("caller %d: got %v, want it to wrap %v", i, err, boom)
 		}
 	}
 	// The key must be released: a later request retries rather than inheriting
 	// the failure.
 	fetcher.fetchErr = nil
 	fetcher.artifact = artifactBody("recovered bytes")
 	res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 		"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz",
 		"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz")
 	if err != nil {
 		t.Fatalf("retry after failed coalesced fetch: %v", err)
 	}
 	body, _ := io.ReadAll(res.Reader)
 	_ = res.Reader.Close()
 	if string(body) != "recovered bytes" {
 		t.Errorf("retry body = %q, want %q", body, "recovered bytes")
 	}
 }
 // TestCoalesce_ResolverPath covers the other entry point: GetOrFetchArtifact
 // resolves the URL itself, so it is keyed without one.
 func TestCoalesce_ResolverPath(t *testing.T) {
 	const callers = 8
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "resolved artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	errs := runConcurrent(callers, func(int) error {
 		res, err := proxy.GetOrFetchArtifact(context.Background(),
 			"npm", "left-pad", "1.3.0", "left-pad-1.3.0.tgz")
 		drain(res)
 		return err
 	})
 	for i, err := range errs {
 		if err != nil {
 			t.Errorf("caller %d: %v", i, err)
 		}
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1", got)
 	}
 }
 // TestCoalesce_ResolverPathEmptyFilename exercises that path when the filename
 // is left to be resolved, which the key cannot know up front.
 func TestCoalesce_ResolverPathEmptyFilename(t *testing.T) {
 	const callers = 8
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "resolved artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	errs := runConcurrent(callers, func(int) error {
 		res, err := proxy.GetOrFetchArtifact(context.Background(), "npm", "left-pad", "1.3.0", "")
 		drain(res)
 		return err
 	})
 	for i, err := range errs {
 		if err != nil {
 			t.Errorf("caller %d: %v", i, err)
 		}
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1", got)
 	}
 }
 // TestCoalesce_SubsequentRequestIsACacheHit confirms the coalesced fetch was
 // committed and is visible later, not just streamed to the waiting callers.
 func TestCoalesce_SubsequentRequestIsACacheHit(t *testing.T) {
 	const callers = 8
 	const url = "https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	_ = runConcurrent(callers, func(int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 		drain(res)
 		return err
 	})
 	res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 		"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 	if err != nil {
 		t.Fatalf("follow-up request: %v", err)
 	}
 	defer func() { _ = res.Reader.Close() }()
 	if !res.Cached {
 		t.Error("follow-up request should be served from cache")
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1 after a follow-up cache hit", got)
 	}
 }
 // TestCoalesce_ReadersAreIndependent guards openStoredArtifact: callers sharing
 // a fetch each need their own reader, or one closing early breaks the rest.
 func TestCoalesce_ReadersAreIndependent(t *testing.T) {
 	const callers = 8
 	const content = "artifact bytes that every caller must receive intact"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: content, delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	results := make([]*CacheResult, callers)
 	errs := runConcurrent(callers, func(i int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz",
 			"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz")
 		results[i] = res
 		return err
 	})
 	for i, err := range errs {
 		if err != nil {
 			t.Fatalf("caller %d: %v", i, err)
 		}
 	}
 	// Close the first caller's reader before anyone else has read a byte.
 	_ = results[0].Reader.Close()
 	for i := 1; i < callers; i++ {
 		body, err := io.ReadAll(results[i].Reader)
 		_ = results[i].Reader.Close()
 		if err != nil {
 			t.Errorf("caller %d read after another caller closed: %v", i, err)
 			continue
 		}
 		if string(body) != content {
 			t.Errorf("caller %d got %q, want %q", i, body, content)
 		}
 	}
 }
 // TestCoalesce_CanceledWaiterDoesNotWaitForTheSharedFetch checks that joining a
 // coalesced fetch does not cost a caller its own cancellation. Without the
 // leader/waiter split a waiter is pinned until the shared fetch resolves,
 // bounded only by the artifact client timeout, so clients that have already
 // gone away keep handler goroutines alive for minutes.
 func TestCoalesce_CanceledWaiterDoesNotWaitForTheSharedFetch(t *testing.T) {
 	const leaderFetch = 2 * time.Second
 	const url = "https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "artifact bytes", delay: leaderFetch, entered: make(chan struct{})}
 	proxy.Fetcher = fetcher
 	leaderDone := make(chan error, 1)
 	go func() {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 		drain(res)
 		leaderDone <- err
 	}()
 	select {
 	case <-fetcher.entered: // the leader holds the key and is inside its fetch
 	case <-time.After(5 * time.Second):
 		t.Fatal("leader never started its fetch")
 	}
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 	start := time.Now()
 	_, err := proxy.GetOrFetchArtifactFromURL(ctx, "npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 	blocked := time.Since(start)
 	if !errors.Is(err, context.Canceled) {
 		t.Errorf("waiter error = %v, want context.Canceled", err)
 	}
 	if blocked > leaderFetch/4 {
 		t.Errorf("canceled waiter blocked %v, want well under %v: it is pinned to the shared fetch",
 			blocked, leaderFetch/4)
 	}
 	// A waiter leaving must not disturb the fetch the others share.
 	if err := <-leaderDone; err != nil {
 		t.Fatalf("leader failed after a waiter canceled: %v", err)
 	}
 	res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 		"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 	if err != nil {
 		t.Fatalf("follow-up after leader completed: %v", err)
 	}
 	defer func() { _ = res.Reader.Close() }()
 	if !res.Cached {
 		t.Error("leader's fetch should have been committed to the cache")
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1", got)
 	}
 }
 // inFlightLen reports how many coalesced fetches are currently registered.
 func inFlightLen(p *Proxy) int {
 	p.fetchMu.Lock()
 	defer p.fetchMu.Unlock()
 	return len(p.inFlight)
 }
 // TestCoalesce_KeyIsReleasedAfterFetch guards the bug this hand-rolled map can
 // have that singleflight could not: a key left behind means later callers join
 // a finished entry, see its closed done channel, and are served that stale
 // result forever, while the map grows without bound.
 func TestCoalesce_KeyIsReleasedAfterFetch(t *testing.T) {
 	const url = "https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: "artifact bytes", delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	_ = runConcurrent(8, func(int) error {
 		res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 			"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 		drain(res)
 		return err
 	})
 	if n := inFlightLen(proxy); n != 0 {
 		t.Errorf("in-flight entries after a successful fetch = %d, want 0", n)
 	}
 	// A fresh miss for the same key must start a new fetch, not rejoin the old
 	// entry. Clearing the cache record forces the miss path again.
 	if err := proxy.ClearCachedArtifact(context.Background(), "npm", "pkg", "1.0.0", "pkg-1.0.0.tgz"); err != nil {
 		t.Fatalf("clear cached artifact: %v", err)
 	}
 	res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 		"npm", "pkg", "1.0.0", "pkg-1.0.0.tgz", url)
 	if err != nil {
 		t.Fatalf("second miss for the same key: %v", err)
 	}
 	drain(res)
 	if got := fetcher.calls.Load(); got != 2 {
 		t.Errorf("upstream fetches = %d, want 2: the second miss must not reuse the finished entry", got)
 	}
 	if n := inFlightLen(proxy); n != 0 {
 		t.Errorf("in-flight entries at end = %d, want 0", n)
 	}
 }
 // missingFromCache is a recheck that always reports a miss, so the shared fetch
 // runs.
 func missingFromCache() (artifacts.Artifact, string, bool) {
 	return artifacts.Artifact{}, "", false
 }
 // TestCoalesce_LeaderRechecksCacheBeforeFetching covers the window between a
 // caller's own cache lookup and it becoming the leader: a concurrent fetch can
 // commit the artifact in that gap, and the leader must serve that rather than
 // fetch it a second time.
 func TestCoalesce_LeaderRechecksCacheBeforeFetching(t *testing.T) {
 	const content = "artifact bytes"
 	proxy, _, store, _ := setupTestProxy(t)
 	const storagePath = "npm/pkg/1.0.0/pkg-1.0.0.tgz"
 	if _, _, err := store.Store(context.Background(), storagePath, strings.NewReader(content)); err != nil {
 		t.Fatalf("seeding storage: %v", err)
 	}
 	committed := artifacts.Artifact{
 		PURL:     "pkg:npm/pkg@1.0.0",
 		Filename: "pkg-1.0.0.tgz",
 		Size:     int64(len(content)),
 	}
 	res, err := proxy.coalesceFetch(context.Background(), "any-key",
 		func() (artifacts.Artifact, string, bool) { return committed, storagePath, true },
 		func(context.Context) (artifacts.Artifact, string, error) {
 			t.Error("fetched an artifact that was already in the cache")
 			return artifacts.Artifact{}, "", errors.New("commit must not run")
 		})
 	if err != nil {
 		t.Fatalf("coalesceFetch failed: %v", err)
 	}
 	defer drain(res)
 	got, err := io.ReadAll(res.Reader)
 	if err != nil {
 		t.Fatalf("reading result: %v", err)
 	}
 	if string(got) != content {
 		t.Errorf("got %q, want %q", got, content)
 	}
 	if n := inFlightLen(proxy); n != 0 {
 		t.Errorf("in-flight entries = %d, want 0", n)
 	}
 }
 // TestCachedArtifactRecord covers the recheck itself: it must report the row a
 // concurrent fetch committed, match its digest the way artifactHashMatches
 // does, and report a miss for anything else.
 func TestCachedArtifactRecord(t *testing.T) {
 	const (
 		content     = "artifact bytes"
 		pkgPURL     = "pkg:npm/pkg"
 		versionPURL = "pkg:npm/pkg@1.0.0"
 		filename    = "pkg-1.0.0.tgz"
 		storagePath = "npm/pkg/1.0.0/pkg-1.0.0.tgz"
 	)
 	proxy, _, _, _ := setupTestProxy(t)
 	hex := sha256Hex(content)
 	committed := testArtifact(content, versionPURL, filename, "application/gzip")
 	if err := proxy.updateCacheDB("npm", "pkg", pkgPURL,
 		"https://registry.npmjs.org/pkg/-/pkg-1.0.0.tgz", storagePath, committed); err != nil {
 		t.Fatalf("seeding cache record: %v", err)
 	}
 	for _, tc := range []struct {
 		name, filename, hash string
 		want                 bool
 	}{
 		{"no upstream hash", filename, "", true},
 		{"matching hash", filename, hex, true},
 		{"matching hash in upper case", filename, strings.ToUpper(hex), true},
 		{"different hash", filename, sha256Hex("something else entirely"), false},
 		{"unknown filename", "pkg-1.0.0.zip", hex, false},
 	} {
 		t.Run(tc.name, func(t *testing.T) {
 			got, path, ok := proxy.cachedArtifactRecord(pkgPURL, versionPURL, tc.filename, tc.hash)
 			if ok != tc.want {
 				t.Fatalf("ok = %v, want %v", ok, tc.want)
 			}
 			if !ok {
 				return
 			}
 			if path != storagePath {
 				t.Errorf("storage path = %q, want %q", path, storagePath)
 			}
 			if got.Digest.Encoded() != hex {
 				t.Errorf("digest = %q, want %q", got.Digest.Encoded(), hex)
 			}
 		})
 	}
 }
 // TestCoalesce_LeaderFetchesWhenRecheckedBytesAreGone covers the other branch
 // of the recheck: a record whose bytes no longer open is not served, and the
 // shared fetch runs instead, the same recovery the cache lookup makes.
 func TestCoalesce_LeaderFetchesWhenRecheckedBytesAreGone(t *testing.T) {
 	const content = "fetched bytes"
 	const storagePath = "npm/pkg/1.0.0/pkg-1.0.0.tgz"
 	proxy, _, store, _ := setupTestProxy(t)
 	stale := artifacts.Artifact{PURL: "pkg:npm/pkg@1.0.0", Filename: "pkg-1.0.0.tgz"}
 	if _, err := store.Open(context.Background(), storagePath); err == nil {
 		t.Fatal("stale bytes were present, so the test proves nothing")
 	}
 	// The leader runs commit on its own goroutine, so a plain counter is safe.
 	fetches := 0
 	res, err := proxy.coalesceFetch(context.Background(), "any-key",
 		func() (artifacts.Artifact, string, bool) { return stale, storagePath, true },
 		func(ctx context.Context) (artifacts.Artifact, string, error) {
 			fetches++
 			if _, _, err := store.Store(ctx, storagePath, strings.NewReader(content)); err != nil {
 				return artifacts.Artifact{}, "", err
 			}
 			return testArtifact(content, stale.PURL, stale.Filename, "application/gzip"), storagePath, nil
 		})
 	if err != nil {
 		t.Fatalf("coalesceFetch failed: %v", err)
 	}
 	defer drain(res)
 	if fetches != 1 {
 		t.Errorf("shared fetches = %d, want 1: a record without bytes must be refetched", fetches)
 	}
 	got, err := io.ReadAll(res.Reader)
 	if err != nil {
 		t.Fatalf("reading result: %v", err)
 	}
 	if string(got) != content {
 		t.Errorf("got %q, want %q", got, content)
 	}
 	if n := inFlightLen(proxy); n != 0 {
 		t.Errorf("in-flight entries = %d, want 0", n)
 	}
 }
 // TestCoalesce_PanicInSharedFetchDoesNotStrandWaiters checks the failure mode
 // that matters most: a caller parked on a shared fetch must never be left
 // blocked forever when that fetch dies.
 //
 // This drives coalesceFetch directly and holds the shared entry itself, because
 // whether a second caller has reached the wait is not observable from outside:
 // it runs a cache lookup against the database first, so releasing the leader on
 // a timer races that query. Losing the race made a second caller the leader
 // instead of a waiter, and its panic was unrecovered, killing the test binary
 // rather than failing the test.
 func TestCoalesce_PanicInSharedFetchDoesNotStrandWaiters(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	const key = "pkg:npm/pkg@1.0.0\x00pkg-1.0.0.tgz"
 	inCommit := make(chan struct{})
 	release := make(chan struct{})
 	leaderPanicked := make(chan struct{})
 	go func() {
 		defer func() {
 			_ = recover() // the panic surfaces in the leader, as it would in a handler
 			close(leaderPanicked)
 		}()
 		_, _ = proxy.coalesceFetch(context.Background(), key, missingFromCache,
 			func(context.Context) (artifacts.Artifact, string, error) {
 				close(inCommit)
 				<-release
 				panic("upstream fetch exploded")
 			})
 	}()
 	<-inCommit // the leader holds the key and is inside the fetch
 	// Take the entry a waiter would park on, while the leader is still held.
 	proxy.fetchMu.Lock()
 	shared := proxy.inFlight[key]
 	proxy.fetchMu.Unlock()
 	if shared == nil {
 		t.Fatal("no in-flight entry registered for a running fetch")
 	}
 	close(release)
 	select {
 	case <-shared.done:
 	case <-time.After(5 * time.Second):
 		t.Fatal("waiter stranded: a panicking shared fetch never released its waiters")
 	}
 	if !errors.Is(shared.err, errSharedFetchAbandoned) {
 		t.Errorf("waiter error = %v, want errSharedFetchAbandoned", shared.err)
 	}
 	<-leaderPanicked
 	if n := inFlightLen(proxy); n != 0 {
 		t.Errorf("in-flight entries after a panic = %d, want 0", n)
 	}
 }
--- a/internal/handler/coalesce_test.go
+++ b/internal/handler/coalesce_test.go
@ -1,185 +0,0 @@
 package handler
 import (
 	"bytes"
 	"context"
 	"io"
 	"log/slog"
 	"net/http"
 	"path/filepath"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"testing"
 	"time"
 	"github.com/git-pkgs/proxy/internal/database"
 	"github.com/git-pkgs/proxy/internal/storage"
 	"github.com/git-pkgs/registries/fetch"
 )
 // fetchHoldTime holds each stub fetch open long enough that concurrent callers
 // reliably overlap inside it. The exact value is not significant.
 const fetchHoldTime = 50 * time.Millisecond
 // countingFetcher counts upstream fetches and holds each one open.
 type countingFetcher struct {
 	calls   atomic.Int64
 	content string
 	delay   time.Duration
 	// entered, if set, is closed when the first fetch begins. A test can wait
 	// on it to know the leader holds the key, rather than guessing with a
 	// sleep.
 	entered   chan struct{}
 	enterOnce sync.Once
 }
 func (f *countingFetcher) Fetch(ctx context.Context, url string) (*fetch.Artifact, error) {
 	return f.FetchWithHeaders(ctx, url, nil)
 }
 func (f *countingFetcher) FetchWithHeaders(_ context.Context, _ string, _ http.Header) (*fetch.Artifact, error) {
 	f.calls.Add(1)
 	if f.entered != nil {
 		f.enterOnce.Do(func() { close(f.entered) })
 	}
 	time.Sleep(f.delay)
 	return &fetch.Artifact{
 		Body:        io.NopCloser(strings.NewReader(f.content)),
 		ContentType: "application/gzip",
 	}, nil
 }
 func (f *countingFetcher) Head(context.Context, string) (int64, string, error) {
 	return 0, "", nil
 }
 // TestGetOrFetchArtifactFromURL_ConcurrentMissesCoalesce asserts that N
 // simultaneous misses for one artifact produce a single upstream fetch. That is
 // the CI shape: parallel jobs installing overlapping dependencies cold.
 func TestGetOrFetchArtifactFromURL_ConcurrentMissesCoalesce(t *testing.T) {
 	const goroutines = 8
 	const content = "left-pad tarball bytes"
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := &countingFetcher{content: content, delay: fetchHoldTime}
 	proxy.Fetcher = fetcher
 	start := make(chan struct{})
 	var wg sync.WaitGroup
 	errs := make([]error, goroutines)
 	bodies := make([]string, goroutines)
 	for i := 0; i < goroutines; i++ {
 		wg.Add(1)
 		go func(i int) {
 			defer wg.Done()
 			<-start
 			res, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 				"npm", "left-pad", "1.3.0", "left-pad-1.3.0.tgz",
 				"https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz")
 			if err != nil {
 				errs[i] = err
 				return
 			}
 			defer func() { _ = res.Reader.Close() }()
 			b, err := io.ReadAll(res.Reader)
 			errs[i] = err
 			bodies[i] = string(b)
 		}(i)
 	}
 	close(start)
 	wg.Wait()
 	for i, err := range errs {
 		if err != nil {
 			t.Errorf("goroutine %d: unexpected error: %v", i, err)
 		}
 	}
 	// Every caller must get its own intact copy of the bytes.
 	for i, b := range bodies {
 		if b != content {
 			t.Errorf("goroutine %d: body = %q, want %q", i, b, content)
 		}
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1 (%d concurrent callers stampeded the upstream)", got, goroutines)
 	}
 }
 // TestGetOrFetchArtifactFromURL_ConcurrentMissesFileStorage runs the same
 // scenario against the real file:// backend, the default in production.
 //
 // Uncoalesced this fails outright, not merely wastefully. Every caller stores
 // to one key, and fileblob rewrites a ".attrs" sidecar per key with os.Create,
 // truncating in place outside the rename that protects the blob. Decoding that
 // sidecar mid-truncate gives "opening reader: EOF", served as a 502.
 //
 // Only the fetcher is stubbed, because the real one refuses loopback so an
 // httptest upstream is unreachable. The storage, where this fails, is real.
 func TestGetOrFetchArtifactFromURL_ConcurrentMissesFileStorage(t *testing.T) {
 	const goroutines = 16
 	content := bytes.Repeat([]byte("tarball-bytes-"), 512)
 	ctx := context.Background()
 	dir := t.TempDir()
 	db, err := database.Create(filepath.Join(dir, "test.db"))
 	if err != nil {
 		t.Fatalf("create database: %v", err)
 	}
 	t.Cleanup(func() { _ = db.Close() })
 	store, err := storage.OpenBucket(ctx, "file://"+filepath.Join(dir, "cache"))
 	if err != nil {
 		t.Fatalf("open storage: %v", err)
 	}
 	t.Cleanup(func() { _ = store.Close() })
 	fetcher := &countingFetcher{content: string(content), delay: fetchHoldTime}
 	proxy := NewProxy(db, store, fetcher, fetch.NewResolver(),
 		slog.New(slog.NewTextHandler(io.Discard, nil)))
 	start := make(chan struct{})
 	var wg sync.WaitGroup
 	errs := make([]error, goroutines)
 	bodies := make([][]byte, goroutines)
 	for i := 0; i < goroutines; i++ {
 		wg.Add(1)
 		go func(i int) {
 			defer wg.Done()
 			<-start
 			res, err := proxy.GetOrFetchArtifactFromURL(ctx,
 				"npm", "left-pad", "1.3.0", "left-pad-1.3.0.tgz",
 				"https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz")
 			if err != nil {
 				errs[i] = err
 				return
 			}
 			defer func() { _ = res.Reader.Close() }()
 			body, readErr := io.ReadAll(res.Reader)
 			errs[i] = readErr
 			bodies[i] = body
 		}(i)
 	}
 	close(start)
 	wg.Wait()
 	for i, err := range errs {
 		if err != nil {
 			t.Errorf("caller %d failed: %v", i, err)
 		}
 	}
 	for i, body := range bodies {
 		if !bytes.Equal(body, content) {
 			t.Errorf("caller %d got %d bytes, want %d", i, len(body), len(content))
 		}
 	}
 	if got := fetcher.calls.Load(); got != 1 {
 		t.Errorf("upstream fetches = %d, want 1", got)
 	}
 }
--- a/internal/handler/composer.go
+++ b/internal/handler/composer.go
@ -1,22 +1,16 @@
 package handler
 import (
 	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"path"
 	"strings"
 	"time"
 )
 const (
-	composerUpstream   = "https://packagist.org"
+	composerUpstream = "https://packagist.org"
-	composerRepo       = "https://repo.packagist.org"
+	composerRepo     = "https://repo.packagist.org"
 	composerUnset      = "__unset"
 	vendorPackageParts = 2
 )
 // ComposerHandler handles Composer/Packagist registry protocol requests.
@ -37,15 +31,6 @@ func NewComposerHandler(proxy *Proxy, proxyURL string) *ComposerHandler {
 	}
 }
 // NewComposerHandlerWithUpstreams creates a Composer handler with custom API
 // and repository upstreams.
 func NewComposerHandlerWithUpstreams(proxy *Proxy, proxyURL, upstreamURL, repoURL string) *ComposerHandler {
 	h := NewComposerHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, composerUpstream)
 	h.repoURL = configuredUpstreamURL(repoURL, composerRepo)
 	return h
 }
 // Routes returns the HTTP handler for Composer requests.
 func (h *ComposerHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
@ -70,14 +55,14 @@ func (h *ComposerHandler) Routes() http.Handler {
 func (h *ComposerHandler) handleServiceIndex(w http.ResponseWriter, r *http.Request) {
 	// Return a minimal service index pointing to our proxy
 	index := map[string]any{
-		"packages":           map[string]any{},
+		"packages":          map[string]any{},
-		"metadata-url":       h.proxyURL + "/composer/p2/%package%.json",
+		"metadata-url":      h.proxyURL + "/composer/p2/%package%.json",
-		"notify-batch":       h.upstreamURL + "/downloads/",
+		"notify-batch":      h.upstreamURL + "/downloads/",
-		"search":             h.proxyURL + "/composer/search.json?q=%query%&type=%type%",
+		"search":            h.proxyURL + "/composer/search.json?q=%query%&type=%type%",
 		"providers-lazy-url": h.proxyURL + "/composer/p2/%package%.json",
 	}
-	w.Header().Set(headerContentType, "application/json")
+	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(index)
 }
@ -86,8 +71,8 @@ func (h *ComposerHandler) handlePackageMetadata(w http.ResponseWriter, r *http.R
 	// Parse path: /p2/{vendor}/{package}.json
 	path := strings.TrimPrefix(r.URL.Path, "/p2/")
 	path = strings.TrimSuffix(path, ".json")
-	parts := strings.SplitN(path, "/", vendorPackageParts)
+	parts := strings.SplitN(path, "/", 2)
-	if len(parts) != vendorPackageParts || parts[0] == "" || parts[1] == "" {
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
 		http.Error(w, "invalid package path", http.StatusBadRequest)
 		return
 	}
@ -97,35 +82,48 @@ func (h *ComposerHandler) handlePackageMetadata(w http.ResponseWriter, r *http.R
 	h.proxy.Logger.Info("composer metadata request", "package", packageName)
 	// Fetch from repo.packagist.org (Composer v2 metadata)
 	upstreamURL := fmt.Sprintf("%s/p2/%s/%s.json", h.repoURL, vendor, pkg)
-	body, _, err := h.proxy.FetchOrCacheMetadata(r.Context(), "composer", packageName, upstreamURL)
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		if errors.Is(err, ErrUpstreamNotFound) {
 			http.Error(w, "not found", http.StatusNotFound)
 			return
 		}
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		w.WriteHeader(resp.StatusCode)
 		_, _ = io.Copy(w, resp.Body)
 		return
 	}
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		http.Error(w, "failed to read response", http.StatusInternalServerError)
 		return
 	}
 	rewritten, err := h.rewriteMetadata(body)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to rewrite metadata, proxying original", "error", err)
-		w.Header().Set(headerContentType, "application/json")
+		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write(body)
 		return
 	}
-	w.Header().Set(headerContentType, "application/json")
+	w.Header().Set("Content-Type", "application/json")
 	_, _ = w.Write(rewritten)
 }
 // rewriteMetadata rewrites dist URLs in Composer metadata to point at this proxy.
 // If the metadata uses the minified Composer v2 format, it is expanded first so
 // that every version entry contains all fields. If cooldown is enabled, versions
 // published too recently are filtered out.
 func (h *ComposerHandler) rewriteMetadata(body []byte) ([]byte, error) {
 	var metadata map[string]any
 	if err := json.Unmarshal(body, &metadata); err != nil {
@ -137,170 +135,44 @@ func (h *ComposerHandler) rewriteMetadata(body []byte) ([]byte, error) {
 		return body, nil
 	}
 	minified := metadata["minified"] == "composer/2.0"
 	for packageName, versions := range packages {
 		versionList, ok := versions.([]any)
 		if !ok {
 			continue
 		}
-		if minified {
+		for _, v := range versionList {
-			versionList = expandMinifiedVersions(versionList)
+			vmap, ok := v.(map[string]any)
-		}
+			if !ok {
 		packages[packageName] = h.filterAndRewriteVersions(packageName, versionList)
 	}
 	delete(metadata, "minified")
 	return json.Marshal(metadata)
 }
 // expandMinifiedVersions expands the Composer v2 minified format where each
 // version entry only contains fields that differ from the previous entry.
 // The "~dev" sentinel string resets the inheritance chain, and the "__unset"
 // value removes a field from the inherited state.
 func expandMinifiedVersions(versionList []any) []any {
 	expanded := make([]any, 0, len(versionList))
 	inherited := map[string]any{}
 	for _, v := range versionList {
 		// The "~dev" sentinel resets the inheritance chain for dev versions.
 		if s, ok := v.(string); ok && s == "~dev" {
 			inherited = map[string]any{}
 			continue
 		}
 		vmap, ok := v.(map[string]any)
 		if !ok {
 			continue
 		}
 		// Merge inherited fields into a new map, then overlay current fields.
 		// Deep copy values to avoid shared references between versions.
 		merged := make(map[string]any, len(inherited)+len(vmap))
 		for k, val := range inherited {
 			merged[k] = deepCopyValue(val)
 		}
 		for k, val := range vmap {
 			if val == composerUnset {
 				delete(merged, k)
 				continue
 			}
 			merged[k] = val
 		}
-		// Update inherited state for next iteration.
+			version, _ := vmap["version"].(string)
-		inherited = merged
+			dist, ok := vmap["dist"].(map[string]any)
 			if !ok {
 				continue
 			}
-		expanded = append(expanded, merged)
+			// Rewrite the dist URL
-	}
+			if url, ok := dist["url"].(string); ok && url != "" {
 				// Extract filename from URL
 				filename := "package.zip"
 				if idx := strings.LastIndex(url, "/"); idx >= 0 {
 					filename = url[idx+1:]
 				}
-	return expanded
+				// Build new URL through our proxy
-}
+				parts := strings.SplitN(packageName, "/", 2)
-
+				if len(parts) == 2 {
-// deepCopyValue returns a deep copy of JSON-like values (maps, slices, scalars).
+					newURL := fmt.Sprintf("%s/composer/files/%s/%s/%s/%s",
-func deepCopyValue(v any) any {
+						h.proxyURL, parts[0], parts[1], version, filename)
-	switch val := v.(type) {
+					dist["url"] = newURL
-	case map[string]any:
+				}
-		m := make(map[string]any, len(val))
+			}
 		for k, v := range val {
 			m[k] = deepCopyValue(v)
 		}
 		return m
 	case []any:
 		s := make([]any, len(val))
 		for i, v := range val {
 			s[i] = deepCopyValue(v)
 		}
 		return s
 	default:
 		return v
 	}
 }
 // filterAndRewriteVersions applies cooldown filtering and rewrites dist URLs
 // for a single package's version list.
 func (h *ComposerHandler) filterAndRewriteVersions(packageName string, versionList []any) []any {
 	packagePURL := canonicalPackagePURL("composer", packageName)
 	filtered := versionList[:0]
 	for _, v := range versionList {
 		vmap, ok := v.(map[string]any)
 		if !ok {
 			continue
 		}
 		version, _ := vmap["version"].(string)
 		if h.shouldFilterVersion(packagePURL, packageName, version, vmap) {
 			continue
 		}
 		h.rewriteDistURL(vmap, packageName, version)
 		filtered = append(filtered, v)
 	}
 	return filtered
 }
 // shouldFilterVersion returns true if the version should be excluded due to cooldown.
 func (h *ComposerHandler) shouldFilterVersion(packagePURL, packageName, version string, vmap map[string]any) bool {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		return false
 	}
 	timeStr, ok := vmap["time"].(string)
 	if !ok {
 		return false
 	}
 	publishedAt, err := time.Parse(time.RFC3339, timeStr)
 	if err != nil {
 		return false
 	}
 	if !h.proxy.Cooldown.IsAllowed("composer", packagePURL, publishedAt) {
 		h.proxy.Logger.Info("cooldown: filtering composer version",
 			"package", packageName, "version", version)
 		return true
 	}
 	return false
 }
 // rewriteDistURL rewrites the dist URL in a version entry to point at this proxy.
 func (h *ComposerHandler) rewriteDistURL(vmap map[string]any, packageName, version string) {
 	dist, ok := vmap["dist"].(map[string]any)
 	if !ok {
 		return
 	}
 	url, ok := dist["url"].(string)
 	if !ok || url == "" {
 		return
 	}
 	filename := "package.zip"
 	if idx := strings.LastIndex(url, "/"); idx >= 0 {
 		filename = url[idx+1:]
 	}
 	// GitHub zipball URLs end with a bare commit hash (no extension).
 	// Append .zip so the archives library can detect the format.
 	if path.Ext(filename) == "" {
 		if distType, _ := dist["type"].(string); distType == "zip" {
 			filename += ".zip"
 		}
 	}
-	parts := strings.SplitN(packageName, "/", vendorPackageParts)
+	return json.Marshal(metadata)
 	if len(parts) == vendorPackageParts {
 		newURL := fmt.Sprintf("%s/composer/files/%s/%s/%s/%s",
 			h.proxyURL, parts[0], parts[1], version, filename)
 		dist["url"] = newURL
 	}
 }
 // handleDownload serves a package file, fetching and caching from upstream if needed.
@ -315,127 +187,50 @@ func (h *ComposerHandler) handleDownload(w http.ResponseWriter, r *http.Request)
 	h.proxy.Logger.Info("composer download request",
 		"package", packageName, "version", version, "filename", filename)
-	// We need to fetch the metadata to get the actual download URL since
+	// We need to fetch the metadata to get the actual download URL
-	// Packagist URLs include a hash. Packagist serves dev versions (e.g.
+	// since Packagist URLs include a hash
-	// "3.x-dev", "dev-master") from a separate "~dev" metadata file, while
+	metaURL := fmt.Sprintf("%s/p2/%s/%s.json", h.repoURL, vendor, pkg)
 	// tagged releases live in the regular file. Try the file most likely to
 	// contain this version first, then fall back to the other so that both
 	// stable and dev versions resolve correctly.
 	metaURLs := h.metadataURLsForVersion(vendor, pkg, version)
-	h.proxy.Logger.Debug("resolving download URL",
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, metaURL, nil)
-		"package", packageName, "version", version,
+	if err != nil {
-		"metadata_urls", metaURLs)
+		http.Error(w, "failed to create request", http.StatusInternalServerError)
 	var downloadURL string
 	for _, metaURL := range metaURLs {
 		url, err := h.findDownloadURLFromMetadata(r.Context(), metaURL, packageName, version)
 		if err != nil {
 			h.proxy.Logger.Error("failed to fetch metadata", "error", err, "url", metaURL)
 			http.Error(w, "failed to fetch metadata", http.StatusBadGateway)
 			return
 		}
 		if url != "" {
 			downloadURL = url
 			break
 		}
 	}
 	if downloadURL == "" {
 		h.proxy.Logger.Debug("version not found in any metadata source",
 			"package", packageName, "version", version,
 			"tried_urls", metaURLs)
 		http.Error(w, "version not found", http.StatusNotFound)
 		return
 	}
-	h.proxy.Logger.Debug("resolved download URL",
+	resp, err := http.DefaultClient.Do(req)
 		"package", packageName, "version", version,
 		"download_url", downloadURL)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "composer", packageName, version, filename, downloadURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to fetch metadata", "error", err)
 		http.Error(w, "failed to fetch metadata", http.StatusBadGateway)
 		return
 	}
 	ServeArtifact(w, result)
 }
 // isDevVersion reports whether a Composer version string refers to a
 // development (unstable, branch) version rather than a tagged release.
 // Composer formats these as either "dev-<branch>" (e.g. "dev-master") or
 // "<alias>-dev" (e.g. "3.x-dev").
 func isDevVersion(version string) bool {
 	return strings.HasPrefix(version, "dev-") || strings.HasSuffix(version, "-dev")
 }
 // metadataURLsForVersion returns the upstream metadata URLs to consult for a
 // given version, in priority order. Dev versions are served from the "~dev"
 // file, tagged releases from the regular file; the other file is included as a
 // fallback so an unexpected classification still resolves.
 func (h *ComposerHandler) metadataURLsForVersion(vendor, pkg, version string) []string {
 	stable := fmt.Sprintf("%s/p2/%s/%s.json", h.repoURL, vendor, pkg)
 	dev := fmt.Sprintf("%s/p2/%s/%s~dev.json", h.repoURL, vendor, pkg)
 	if isDevVersion(version) {
 		return []string{dev, stable}
 	}
 	return []string{stable, dev}
 }
 // findDownloadURLFromMetadata fetches a metadata document and returns the dist
 // URL for the given version, or an empty string if the version is not present.
 // An error is returned only on transport failure; a missing document (non-200)
 // or a missing version both yield an empty string so the caller can fall back.
 func (h *ComposerHandler) findDownloadURLFromMetadata(ctx context.Context, metaURL, packageName, version string) (string, error) {
 	h.proxy.Logger.Debug("fetching upstream metadata for download lookup",
 		"url", metaURL, "package", packageName, "version", version)
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, metaURL, nil)
 	if err != nil {
 		return "", err
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		return "", err
 	}
 	defer func() { _ = resp.Body.Close() }()
 	h.proxy.Logger.Debug("upstream metadata response",
 		"url", metaURL, "status", resp.StatusCode)
 	if resp.StatusCode != http.StatusOK {
-		return "", nil
+		http.Error(w, "package not found", http.StatusNotFound)
 		return
 	}
 	var metadata map[string]any
 	if err := json.NewDecoder(resp.Body).Decode(&metadata); err != nil {
-		return "", err
+		http.Error(w, "failed to parse metadata", http.StatusInternalServerError)
 		return
 	}
-	// Expand minified Composer v2 format so that inherited fields (including
+	// Find the download URL for this version
-	// dist) are present on every version entry. Without this, versions that
+	downloadURL := h.findDownloadURL(metadata, packageName, version)
-	// inherit dist from a previous entry will appear to have no download URL.
+	if downloadURL == "" {
-	if metadata["minified"] == "composer/2.0" {
+		http.Error(w, "version not found", http.StatusNotFound)
-		h.proxy.Logger.Debug("expanding minified metadata", "url", metaURL)
+		return
 		if packages, ok := metadata["packages"].(map[string]any); ok {
 			for pkgName, versions := range packages {
 				versionList, ok := versions.([]any)
 				if !ok {
 					continue
 				}
 				packages[pkgName] = expandMinifiedVersions(versionList)
 			}
 		}
 	}
-	url := h.findDownloadURL(metadata, packageName, version)
+	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "composer", packageName, version, filename, downloadURL)
-	h.proxy.Logger.Debug("download URL lookup result",
+	if err != nil {
-		"url", metaURL, "package", packageName, "version", version,
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
-		"download_url", url)
+		http.Error(w, "failed to fetch package", http.StatusBadGateway)
-	return url, nil
+		return
 	}
 	ServeArtifact(w, result)
 }
 // findDownloadURL finds the dist URL for a specific version in metadata.
@ -483,7 +278,7 @@ func (h *ComposerHandler) proxyUpstream(w http.ResponseWriter, r *http.Request)
 		return
 	}
-	resp, err := h.proxy.HTTPClient.Do(req)
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
--- a/internal/handler/composer_test.go
+++ b/internal/handler/composer_test.go
@ -1,616 +0,0 @@
 package handler
 import (
 	"context"
 	"encoding/json"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 )
 func TestComposerRewriteMetadata(t *testing.T) {
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	input := `{
 		"packages": {
 			"symfony/console": [
 				{
 					"version": "6.0.0",
 					"dist": {
 						"url": "https://repo.packagist.org/files/symfony/console/6.0.0/abc123.zip",
 						"type": "zip"
 					}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/console"].([]any)
 	v := versions[0].(map[string]any)
 	dist := v["dist"].(map[string]any)
 	expected := "http://localhost:8080/composer/files/symfony/console/6.0.0/abc123.zip"
 	if dist["url"] != expected {
 		t.Errorf("dist url = %q, want %q", dist["url"], expected)
 	}
 }
 func TestComposerRewriteMetadataExpandsMinified(t *testing.T) {
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	// Minified format: first version has all fields, subsequent versions
 	// only include fields that changed. The proxy must expand this so every
 	// version has all fields (including "name").
 	input := `{
 		"minified": "composer/2.0",
 		"packages": {
 			"symfony/console": [
 				{
 					"name": "symfony/console",
 					"description": "Symfony Console Component",
 					"version": "6.0.0",
 					"dist": {
 						"url": "https://repo.packagist.org/files/symfony/console/6.0.0/abc123.zip",
 						"type": "zip"
 					}
 				},
 				{
 					"version": "5.4.0",
 					"dist": {
 						"url": "https://repo.packagist.org/files/symfony/console/5.4.0/def456.zip",
 						"type": "zip"
 					}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	// The minified key should be removed from output
 	if _, ok := result["minified"]; ok {
 		t.Error("expected minified key to be removed from output")
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/console"].([]any)
 	// Second version should have inherited the "name" and "description" fields
 	v1 := versions[1].(map[string]any)
 	if v1["name"] != "symfony/console" {
 		t.Errorf("second version name = %v, want %q", v1["name"], "symfony/console")
 	}
 	if v1["description"] != "Symfony Console Component" {
 		t.Errorf("second version description = %v, want %q", v1["description"], "Symfony Console Component")
 	}
 }
 func TestComposerRewriteMetadataMinifiedDevReset(t *testing.T) {
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	// The ~dev sentinel resets the inheritance chain for dev versions.
 	input := `{
 		"minified": "composer/2.0",
 		"packages": {
 			"symfony/console": [
 				{
 					"name": "symfony/console",
 					"description": "Symfony Console Component",
 					"license": ["MIT"],
 					"version": "6.0.0",
 					"dist": {
 						"url": "https://repo.packagist.org/files/symfony/console/6.0.0/abc123.zip",
 						"type": "zip"
 					}
 				},
 				"~dev",
 				{
 					"name": "symfony/console",
 					"version": "dev-main",
 					"dist": {
 						"url": "https://repo.packagist.org/files/symfony/console/dev-main/xyz789.zip",
 						"type": "zip"
 					}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/console"].([]any)
 	if len(versions) != 2 {
 		t.Fatalf("expected 2 versions, got %d", len(versions))
 	}
 	// Dev version should NOT have inherited "license" or "description"
 	// from the tagged version (the ~dev sentinel resets inheritance).
 	devVersion := versions[1].(map[string]any)
 	if devVersion["version"] != "dev-main" {
 		t.Errorf("dev version = %v, want %q", devVersion["version"], "dev-main")
 	}
 	if _, ok := devVersion["license"]; ok {
 		t.Error("dev version should not have inherited license field after ~dev reset")
 	}
 	if _, ok := devVersion["description"]; ok {
 		t.Error("dev version should not have inherited description field after ~dev reset")
 	}
 }
 func TestComposerRewriteMetadataUnset(t *testing.T) {
 	h := &ComposerHandler{
 		proxy:    &Proxy{Logger: slog.Default()},
 		proxyURL: "http://localhost:8080",
 	}
 	// In the minified format, "__unset" removes a field from the inherited
 	// state. v1.29.0 has require-dev, v1.28.0 unsets it, v1.27.0 inherits the
 	// unset state. Composer rejects metadata where require-dev (or any link
 	// field) is the literal string "__unset" rather than an object.
 	input := `{
 		"minified": "composer/2.0",
 		"packages": {
 			"venturecraft/revisionable": [
 				{
 					"name": "venturecraft/revisionable",
 					"version": "1.29.0",
 					"require": {"php": ">=5.4"},
 					"require-dev": {"orchestra/testbench": "~3.0"},
 					"dist": {"url": "https://example.com/a.zip", "type": "zip"}
 				},
 				{
 					"version": "1.28.0",
 					"require-dev": "__unset"
 				},
 				{
 					"version": "1.27.0"
 				},
 				{
 					"version": "1.26.0",
 					"require-dev": {"foo/bar": "1.0"}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	versions := result["packages"].(map[string]any)["venturecraft/revisionable"].([]any)
 	if len(versions) != 4 {
 		t.Fatalf("expected 4 versions, got %d", len(versions))
 	}
 	byVersion := map[string]map[string]any{}
 	for _, v := range versions {
 		vmap := v.(map[string]any)
 		byVersion[vmap["version"].(string)] = vmap
 	}
 	if _, ok := byVersion["1.29.0"]["require-dev"].(map[string]any); !ok {
 		t.Errorf("1.29.0 require-dev should be an object, got %T", byVersion["1.29.0"]["require-dev"])
 	}
 	if rd, ok := byVersion["1.28.0"]["require-dev"]; ok {
 		t.Errorf("1.28.0 require-dev should be absent, got %v", rd)
 	}
 	if rd, ok := byVersion["1.27.0"]["require-dev"]; ok {
 		t.Errorf("1.27.0 require-dev should be absent (inherited unset), got %v", rd)
 	}
 	if _, ok := byVersion["1.26.0"]["require-dev"].(map[string]any); !ok {
 		t.Errorf("1.26.0 require-dev should be an object, got %T", byVersion["1.26.0"]["require-dev"])
 	}
 	if _, ok := byVersion["1.27.0"]["require"].(map[string]any); !ok {
 		t.Error("1.27.0 should still inherit require from 1.29.0")
 	}
 }
 func TestComposerRewriteMetadataCooldownPreservesNames(t *testing.T) {
 	now := time.Now()
 	old := now.Add(-10 * 24 * time.Hour).Format(time.RFC3339)
 	veryOld := now.Add(-20 * 24 * time.Hour).Format(time.RFC3339)
 	recent := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	proxy := &Proxy{Logger: slog.Default()}
 	proxy.Cooldown = &cooldown.Config{Default: "3d"}
 	h := &ComposerHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	// Minified format where "name" only appears in first version.
 	// When cooldown filters the first version, remaining versions must
 	// still have the "name" field after expansion.
 	input := `{
 		"minified": "composer/2.0",
 		"packages": {
 			"symfony/console": [
 				{
 					"name": "symfony/console",
 					"description": "Symfony Console Component",
 					"version": "7.0.0",
 					"time": "` + recent + `",
 					"dist": {"url": "https://repo.packagist.org/7.0.0.zip", "type": "zip"}
 				},
 				{
 					"version": "6.0.0",
 					"time": "` + old + `",
 					"dist": {"url": "https://repo.packagist.org/6.0.0.zip", "type": "zip"}
 				},
 				{
 					"version": "5.0.0",
 					"time": "` + veryOld + `",
 					"dist": {"url": "https://repo.packagist.org/5.0.0.zip", "type": "zip"}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/console"].([]any)
 	// v7.0.0 should be filtered by cooldown, leaving v6.0.0 and v5.0.0
 	if len(versions) != 2 {
 		t.Fatalf("expected 2 versions after cooldown, got %d", len(versions))
 	}
 	// Both remaining versions must have the "name" field
 	for _, v := range versions {
 		vmap := v.(map[string]any)
 		if vmap["name"] != "symfony/console" {
 			t.Errorf("version %v missing name field, got %v", vmap["version"], vmap["name"])
 		}
 	}
 }
 func TestComposerRewriteDistURLGitHubZipball(t *testing.T) {
 	// GitHub zipball URLs end with a bare commit hash, no file extension.
 	// The proxy must produce a filename with .zip extension so that the
 	// archives library can detect the format when browsing source.
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	vmap := map[string]any{
 		"version": "v7.4.8",
 		"dist": map[string]any{
 			"url":       "https://api.github.com/repos/symfony/asset/zipball/d2e2f014ccd6ec9fae8dbe6336a4164346a2a856",
 			"type":      "zip",
 			"shasum":    "",
 			"reference": "d2e2f014ccd6ec9fae8dbe6336a4164346a2a856",
 		},
 	}
 	h.rewriteDistURL(vmap, "symfony/asset", "v7.4.8")
 	dist := vmap["dist"].(map[string]any)
 	url := dist["url"].(string)
 	// The rewritten URL's filename must have a .zip extension
 	if !strings.HasSuffix(url, ".zip") {
 		t.Errorf("rewritten dist URL filename has no .zip extension: %s", url)
 	}
 }
 func TestComposerRewriteMetadataGitHubZipballFilenames(t *testing.T) {
 	// End-to-end: metadata with GitHub zipball URLs should produce
 	// download URLs that end in .zip so browse source can open them.
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	input := `{
 		"packages": {
 			"symfony/config": [
 				{
 					"version": "v7.4.8",
 					"dist": {
 						"url": "https://api.github.com/repos/symfony/config/zipball/c7369cc1da250fcbfe0c5a9d109e419661549c39",
 						"type": "zip",
 						"reference": "c7369cc1da250fcbfe0c5a9d109e419661549c39"
 					}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/config"].([]any)
 	v := versions[0].(map[string]any)
 	dist := v["dist"].(map[string]any)
 	url := dist["url"].(string)
 	if !strings.HasSuffix(url, ".zip") {
 		t.Errorf("rewritten URL should end in .zip, got %s", url)
 	}
 }
 func TestComposerExpandMinifiedSharedDistReferences(t *testing.T) {
 	// When a minified version inherits the dist field from a previous version
 	// (i.e. it doesn't include its own dist), expanding + rewriting must not
 	// corrupt the dist URLs via shared map references.
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://localhost:8080",
 	}
 	// In this minified payload, v5.3.0 does NOT include a dist field,
 	// so it inherits v5.4.0's dist. After expansion and URL rewriting,
 	// each version must have its own correct dist URL.
 	input := `{
 		"minified": "composer/2.0",
 		"packages": {
 			"vendor/pkg": [
 				{
 					"name": "vendor/pkg",
 					"version": "5.4.0",
 					"dist": {
 						"url": "https://api.github.com/repos/vendor/pkg/zipball/aaa111",
 						"type": "zip",
 						"reference": "aaa111"
 					}
 				},
 				{
 					"version": "5.3.0"
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["vendor/pkg"].([]any)
 	if len(versions) != 2 {
 		t.Fatalf("expected 2 versions, got %d", len(versions))
 	}
 	v1 := versions[0].(map[string]any)
 	v2 := versions[1].(map[string]any)
 	dist1 := v1["dist"].(map[string]any)
 	dist2 := v2["dist"].(map[string]any)
 	url1 := dist1["url"].(string)
 	url2 := dist2["url"].(string)
 	// Each version must have its own URL with its own version in the path
 	if !strings.Contains(url1, "/5.4.0/") {
 		t.Errorf("v5.4.0 dist URL should contain /5.4.0/, got %s", url1)
 	}
 	if !strings.Contains(url2, "/5.3.0/") {
 		t.Errorf("v5.3.0 dist URL should contain /5.3.0/, got %s", url2)
 	}
 	// The two URLs must be different
 	if url1 == url2 {
 		t.Errorf("both versions have the same dist URL (shared reference bug): %s", url1)
 	}
 }
 // TestComposerDownloadDevVersionUsesDevMetadata is a regression test for the
 // bug that made it impossible to install a *-dev dependency from dist.
 //
 // Packagist serves development versions (e.g. "3.x-dev", "dev-master") from a
 // separate "{package}~dev.json" metadata file; the regular "{package}.json"
 // file contains only tagged releases. The download handler used to fetch only
 // the regular file, so it could never find the dist URL for a dev version and
 // returned 404 — causing Composer to silently fall back to a git clone.
 //
 // This test serves both files from a mock upstream and asserts that:
 //   - the OLD behavior (regular file only) cannot resolve the dev version, and
 //   - the FIXED behavior (consulting the ~dev file) does.
 func TestComposerDownloadDevVersionUsesDevMetadata(t *testing.T) {
 	const (
 		pkg     = "phpmd/phpmd"
 		vendor  = "phpmd"
 		name    = "phpmd"
 		version = "3.x-dev"
 		distURL = "https://api.github.com/repos/phpmd/phpmd/zipball/2a9217f60aaf27bf6ddad9188f254d020ab70745"
 	)
 	// Regular metadata: tagged releases only — no dev versions.
 	stableBody := `{
 		"packages": {
 			"phpmd/phpmd": [
 				{"version": "2.15.0", "dist": {"url": "https://example.com/2.15.0.zip", "type": "zip"}}
 			]
 		}
 	}`
 	// ~dev metadata: where the 3.x-dev version actually lives.
 	devBody := `{
 		"packages": {
 			"phpmd/phpmd": [
 				{"version": "3.x-dev", "dist": {"url": "` + distURL + `", "type": "zip"}}
 			]
 		}
 	}`
 	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
 		case "/p2/phpmd/phpmd.json":
 			_, _ = w.Write([]byte(stableBody))
 		case "/p2/phpmd/phpmd~dev.json":
 			_, _ = w.Write([]byte(devBody))
 		default:
 			http.NotFound(w, r)
 		}
 	}))
 	defer srv.Close()
 	h := &ComposerHandler{
 		proxy:    testProxy(),
 		repoURL:  srv.URL,
 		proxyURL: "http://localhost:8080",
 	}
 	ctx := context.Background()
 	// OLD behavior: fetching only the regular file fails to resolve the dev
 	// version, which is what produced the 404 before the fix.
 	stableURL := srv.URL + "/p2/phpmd/phpmd.json"
 	got, err := h.findDownloadURLFromMetadata(ctx, stableURL, pkg, version)
 	if err != nil {
 		t.Fatalf("unexpected error fetching regular metadata: %v", err)
 	}
 	if got != "" {
 		t.Fatalf("regular metadata unexpectedly contained dev version %q (got %q); "+
 			"the test no longer reproduces the original bug", version, got)
 	}
 	// FIXED behavior: the handler consults the ~dev file (it is first in the
 	// candidate list for dev versions) and resolves the dist URL.
 	urls := h.metadataURLsForVersion(vendor, name, version)
 	if len(urls) == 0 || !strings.HasSuffix(urls[0], "/p2/phpmd/phpmd~dev.json") {
 		t.Fatalf("dev version should consult the ~dev metadata file first, got %v", urls)
 	}
 	var resolved string
 	for _, u := range urls {
 		resolved, err = h.findDownloadURLFromMetadata(ctx, u, pkg, version)
 		if err != nil {
 			t.Fatalf("unexpected error fetching metadata %q: %v", u, err)
 		}
 		if resolved != "" {
 			break
 		}
 	}
 	if resolved != distURL {
 		t.Errorf("dev version dist URL = %q, want %q", resolved, distURL)
 	}
 }
 func TestComposerRewriteMetadataCooldown(t *testing.T) {
 	now := time.Now()
 	old := now.Add(-10 * 24 * time.Hour).Format(time.RFC3339)
 	recent := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	proxy := &Proxy{Logger: slog.Default()}
 	proxy.Cooldown = &cooldown.Config{Default: "3d"}
 	h := &ComposerHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	input := `{
 		"packages": {
 			"symfony/console": [
 				{
 					"version": "5.0.0",
 					"time": "` + old + `",
 					"dist": {"url": "https://repo.packagist.org/5.0.0.zip", "type": "zip"}
 				},
 				{
 					"version": "6.0.0",
 					"time": "` + recent + `",
 					"dist": {"url": "https://repo.packagist.org/6.0.0.zip", "type": "zip"}
 				}
 			]
 		}
 	}`
 	output, err := h.rewriteMetadata([]byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	packages := result["packages"].(map[string]any)
 	versions := packages["symfony/console"].([]any)
 	if len(versions) != 1 {
 		t.Fatalf("expected 1 version after cooldown, got %d", len(versions))
 	}
 	v := versions[0].(map[string]any)
 	if v["version"] != "5.0.0" {
 		t.Errorf("expected version 5.0.0, got %v", v["version"])
 	}
 }
--- a/internal/handler/conan.go
+++ b/internal/handler/conan.go
@ -27,13 +27,6 @@ func NewConanHandler(proxy *Proxy, proxyURL string) *ConanHandler {
 	}
 }
 // NewConanHandlerWithUpstream creates a Conan handler with a custom upstream.
 func NewConanHandlerWithUpstream(proxy *Proxy, proxyURL, upstreamURL string) *ConanHandler {
 	h := NewConanHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, conanUpstream)
 	return h
 }
 // Routes returns the HTTP handler for Conan requests.
 func (h *ConanHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
@ -50,8 +43,8 @@ func (h *ConanHandler) Routes() http.Handler {
 	mux.HandleFunc("GET /v1/files/{name}/{version}/{user}/{channel}/{revision}/package/{pkgref}/{pkgrev}/{filename}", h.handlePackageFile)
 	mux.HandleFunc("GET /v2/files/{name}/{version}/{user}/{channel}/{revision}/package/{pkgref}/{pkgrev}/{filename}", h.handlePackageFile)
-	// Proxy all other endpoints (metadata, search, etc.) with caching
+	// Proxy all other endpoints (metadata, search, etc.)
-	mux.HandleFunc("GET /", h.proxyCached)
+	mux.HandleFunc("GET /", h.proxyUpstream)
 	return mux
 }
@ -91,7 +84,8 @@ func (h *ConanHandler) handleRecipeFile(w http.ResponseWriter, r *http.Request)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "conan", packageName, storageVersion, storageFilename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch file")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch file", http.StatusBadGateway)
 		return
 	}
@ -128,7 +122,8 @@ func (h *ConanHandler) handlePackageFile(w http.ResponseWriter, r *http.Request)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "conan", packageName, storageVersion, storageFilename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch file")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch file", http.StatusBadGateway)
 		return
 	}
@ -152,20 +147,6 @@ func (h *ConanHandler) shouldCacheFile(filename string) bool {
 	return false
 }
 // proxyCached forwards a request with metadata caching.
 func (h *ConanHandler) proxyCached(w http.ResponseWriter, r *http.Request) {
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	cacheKey = strings.ReplaceAll(cacheKey, "/", "_")
 	if r.URL.RawQuery != "" {
 		cacheKey += "_" + r.URL.RawQuery
 	}
 	upstreamURL := h.upstreamURL + r.URL.Path
 	if r.URL.RawQuery != "" {
 		upstreamURL += "?" + r.URL.RawQuery
 	}
 	h.proxy.ProxyCached(w, r, upstreamURL, "conan", cacheKey, "*/*")
 }
 // proxyUpstream forwards a request to conan center without caching.
 func (h *ConanHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	upstreamURL := h.upstreamURL + r.URL.Path
@ -186,7 +167,7 @@ func (h *ConanHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 		req.Header.Set("Authorization", auth)
 	}
-	resp, err := h.proxy.HTTPClient.Do(req)
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
--- a/internal/handler/conan_test.go
+++ b/internal/handler/conan_test.go
@ -1,476 +0,0 @@
 package handler
 import (
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 )
 const testProxyURL = "http://localhost:8080"
 func conanTestProxy() *Proxy {
 	return &Proxy{
 		Logger:     slog.Default(),
 		HTTPClient: http.DefaultClient,
 	}
 }
 func TestConanShouldCacheFile(t *testing.T) {
 	h := &ConanHandler{}
 	tests := []struct {
 		filename string
 		want     bool
 	}{
 		{"conan_sources.tgz", true},
 		{"conan_export.tgz", true},
 		{"conan_package.tgz", true},
 		{"conanfile.py", false},
 		{"conanmanifest.txt", false},
 		{"conaninfo.txt", false},
 		{"random.tgz", false},
 		{"", false},
 	}
 	for _, tt := range tests {
 		got := h.shouldCacheFile(tt.filename)
 		if got != tt.want {
 			t.Errorf("shouldCacheFile(%q) = %v, want %v", tt.filename, got, tt.want)
 		}
 	}
 }
 func TestConanPingV1(t *testing.T) {
 	h := &ConanHandler{
 		proxy:    conanTestProxy(),
 		proxyURL: testProxyURL,
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v1/ping", nil)
 	w := httptest.NewRecorder()
 	h.handlePing(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	caps := w.Header().Get("X-Conan-Server-Capabilities")
 	if caps != "revisions" {
 		t.Errorf("X-Conan-Server-Capabilities = %q, want %q", caps, "revisions")
 	}
 }
 func TestConanPingV2(t *testing.T) {
 	h := &ConanHandler{
 		proxy:    conanTestProxy(),
 		proxyURL: testProxyURL,
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/ping", nil)
 	w := httptest.NewRecorder()
 	h.handlePing(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	caps := w.Header().Get("X-Conan-Server-Capabilities")
 	if caps != "revisions" {
 		t.Errorf("X-Conan-Server-Capabilities = %q, want %q", caps, "revisions")
 	}
 }
 func TestConanProxyUpstream(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != "/v2/conans/search" {
 			w.WriteHeader(http.StatusNotFound)
 			return
 		}
 		if r.URL.Query().Get("q") != "zlib" {
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(`{"results":["zlib/1.2.13"]}`))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/search?q=zlib", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	body := w.Body.String()
 	if !strings.Contains(body, "zlib/1.2.13") {
 		t.Errorf("response body does not contain expected result: %s", body)
 	}
 }
 func TestConanProxyUpstreamNotFound(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusNotFound)
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/nonexistent", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusNotFound {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusNotFound)
 	}
 }
 func TestConanProxyUpstreamCopiesHeaders(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("X-Custom-Header", "test-value")
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(`{}`))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/test", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Header().Get("X-Custom-Header") != "test-value" {
 		t.Errorf("X-Custom-Header = %q, want %q", w.Header().Get("X-Custom-Header"), "test-value")
 	}
 }
 func TestConanProxyUpstreamForwardsAuthHeader(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		auth := r.Header.Get("Authorization")
 		if auth != "Bearer mytoken" {
 			w.WriteHeader(http.StatusUnauthorized)
 			return
 		}
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(`{"ok":true}`))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/test", nil)
 	req.Header.Set("Authorization", "Bearer mytoken")
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
 func TestConanProxyUpstreamBadUpstream(t *testing.T) {
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: "http://127.0.0.1:1", // unreachable
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/test", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusBadGateway {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusBadGateway)
 	}
 }
 func TestConanRecipeFileNonCacheable(t *testing.T) {
 	// When a recipe file is not cacheable (e.g. conanfile.py), it should be proxied upstream.
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "text/plain")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte("conanfile content"))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/files/zlib/1.2.13/_/_/abc123/recipe/conanfile.py", nil)
 	req.SetPathValue("name", "zlib")
 	req.SetPathValue("version", "1.2.13")
 	req.SetPathValue("user", "_")
 	req.SetPathValue("channel", "_")
 	req.SetPathValue("revision", "abc123")
 	req.SetPathValue("filename", "conanfile.py")
 	w := httptest.NewRecorder()
 	h.handleRecipeFile(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	body := w.Body.String()
 	if body != "conanfile content" {
 		t.Errorf("body = %q, want %q", body, "conanfile content")
 	}
 }
 func TestConanPackageFileNonCacheable(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "text/plain")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte("conaninfo content"))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/files/zlib/1.2.13/_/_/abc123/package/pkgref1/pkgrev1/conaninfo.txt", nil)
 	req.SetPathValue("name", "zlib")
 	req.SetPathValue("version", "1.2.13")
 	req.SetPathValue("user", "_")
 	req.SetPathValue("channel", "_")
 	req.SetPathValue("revision", "abc123")
 	req.SetPathValue("pkgref", "pkgref1")
 	req.SetPathValue("pkgrev", "pkgrev1")
 	req.SetPathValue("filename", "conaninfo.txt")
 	w := httptest.NewRecorder()
 	h.handlePackageFile(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	body := w.Body.String()
 	if body != "conaninfo content" {
 		t.Errorf("body = %q, want %q", body, "conaninfo content")
 	}
 }
 func TestConanRoutes(t *testing.T) {
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: "http://localhost:1", // won't be called for ping
 		proxyURL:    "http://proxy.local",
 	}
 	routes := h.Routes()
 	tests := []struct {
 		path       string
 		wantStatus int
 	}{
 		{"/v1/ping", http.StatusOK},
 		{"/v2/ping", http.StatusOK},
 	}
 	for _, tt := range tests {
 		req := httptest.NewRequest(http.MethodGet, tt.path, nil)
 		w := httptest.NewRecorder()
 		routes.ServeHTTP(w, req)
 		if w.Code != tt.wantStatus {
 			t.Errorf("GET %s: status = %d, want %d", tt.path, w.Code, tt.wantStatus)
 		}
 	}
 }
 func TestConanProxyUpstreamPreservesQueryString(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Query().Get("q") != "boost" && r.URL.Query().Get("page") != "2" {
 			w.WriteHeader(http.StatusBadRequest)
 			return
 		}
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(`ok`))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/search?q=boost&page=2", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
 func TestConanProxyUpstreamLargeResponse(t *testing.T) {
 	largeBody := strings.Repeat("x", 1024*1024)
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(largeBody))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/test", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	if w.Body.Len() != len(largeBody) {
 		t.Errorf("body length = %d, want %d", w.Body.Len(), len(largeBody))
 	}
 }
 func TestNewConanHandler(t *testing.T) {
 	proxy := conanTestProxy()
 	h := NewConanHandler(proxy, "http://localhost:8080/")
 	if h.proxy != proxy {
 		t.Error("proxy not set correctly")
 	}
 	if h.upstreamURL != conanUpstream {
 		t.Errorf("upstreamURL = %q, want %q", h.upstreamURL, conanUpstream)
 	}
 	if h.proxyURL != testProxyURL {
 		t.Errorf("proxyURL = %q, want %q (trailing slash should be trimmed)", h.proxyURL, testProxyURL)
 	}
 }
 func TestNewConanHandlerNoTrailingSlash(t *testing.T) {
 	proxy := conanTestProxy()
 	h := NewConanHandler(proxy, testProxyURL)
 	if h.proxyURL != testProxyURL {
 		t.Errorf("proxyURL = %q, want %q", h.proxyURL, testProxyURL)
 	}
 }
 func TestConanProxyUpstreamNoAuthHeaderWhenNotProvided(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		auth := r.Header.Get("Authorization")
 		if auth != "" {
 			w.WriteHeader(http.StatusBadRequest)
 			_, _ = w.Write([]byte("unexpected auth header"))
 			return
 		}
 		w.WriteHeader(http.StatusOK)
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/test", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
 func TestConanProxyUpstreamCopiesBody(t *testing.T) {
 	expected := `{"name":"zlib","version":"1.2.13","user":"_","channel":"_"}`
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write([]byte(expected))
 	}))
 	defer upstream.Close()
 	h := &ConanHandler{
 		proxy:       conanTestProxy(),
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/v2/conans/zlib/1.2.13/_/_/latest", nil)
 	w := httptest.NewRecorder()
 	h.proxyUpstream(w, req)
 	if w.Code != http.StatusOK {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	got, _ := io.ReadAll(w.Body)
 	if string(got) != expected {
 		t.Errorf("body = %q, want %q", string(got), expected)
 	}
 }
 func TestConanProxyUpstreamPreservesStatusCodes(t *testing.T) {
 	codes := []int{
 		http.StatusOK,
 		http.StatusNotFound,
 		http.StatusForbidden,
 		http.StatusInternalServerError,
 	}
 	for _, code := range codes {
 		upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			w.WriteHeader(code)
 		}))
 		h := &ConanHandler{
 			proxy:       conanTestProxy(),
 			upstreamURL: upstream.URL,
 			proxyURL:    "http://proxy.local",
 		}
 		req := httptest.NewRequest(http.MethodGet, "/v2/test", nil)
 		w := httptest.NewRecorder()
 		h.proxyUpstream(w, req)
 		if w.Code != code {
 			t.Errorf("status = %d, want %d", w.Code, code)
 		}
 		upstream.Close()
 	}
 }
--- a/internal/handler/conda.go
+++ b/internal/handler/conda.go
@ -1,16 +1,13 @@
 package handler
 import (
 	"encoding/json"
 	"io"
 	"net/http"
 	"strings"
 	"time"
 )
 const (
 	condaUpstream = "https://conda.anaconda.org"
 	minCondaParts = 3 // name-version-build requires at least 3 hyphen-separated parts
 )
 // CondaHandler handles Conda/Anaconda registry protocol requests.
@ -29,21 +26,14 @@ func NewCondaHandler(proxy *Proxy, proxyURL string) *CondaHandler {
 	}
 }
 // NewCondaHandlerWithUpstream creates a Conda handler with a custom upstream.
 func NewCondaHandlerWithUpstream(proxy *Proxy, proxyURL, upstreamURL string) *CondaHandler {
 	h := NewCondaHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, condaUpstream)
 	return h
 }
 // Routes returns the HTTP handler for Conda requests.
 func (h *CondaHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
 	// Channel index (repodata)
-	mux.HandleFunc("GET /{channel}/{arch}/repodata.json", h.handleRepodata)
+	mux.HandleFunc("GET /{channel}/{arch}/repodata.json", h.proxyUpstream)
-	mux.HandleFunc("GET /{channel}/{arch}/repodata.json.bz2", h.proxyCached)
+	mux.HandleFunc("GET /{channel}/{arch}/repodata.json.bz2", h.proxyUpstream)
-	mux.HandleFunc("GET /{channel}/{arch}/current_repodata.json", h.handleRepodata)
+	mux.HandleFunc("GET /{channel}/{arch}/current_repodata.json", h.proxyUpstream)
 	// Package downloads (cache these)
 	mux.HandleFunc("GET /{channel}/{arch}/{filename}", h.handleDownload)
@ -79,7 +69,8 @@ func (h *CondaHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "conda", packageName, version, filename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
@ -107,7 +98,7 @@ func (h *CondaHandler) parseFilename(filename string) (name, version string) {
 	// Split by hyphens, the format is name-version-build
 	// The name can contain hyphens, so we need to find version-build at the end
 	parts := strings.Split(base, "-")
-	if len(parts) < minCondaParts {
+	if len(parts) < 3 {
 		return "", ""
 	}
@ -128,25 +119,24 @@ func (h *CondaHandler) parseFilename(filename string) (name, version string) {
 	return name, version
 }
-// handleRepodata proxies repodata.json, applying cooldown filtering when enabled.
+// proxyUpstream forwards a request to Anaconda without caching.
-func (h *CondaHandler) handleRepodata(w http.ResponseWriter, r *http.Request) {
+func (h *CondaHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		h.proxyCached(w, r)
 		return
 	}
 	upstreamURL := h.upstreamURL + r.URL.Path
-	h.proxy.Logger.Debug("fetching repodata for cooldown filtering", "url", upstreamURL)
+	h.proxy.Logger.Debug("proxying to upstream", "url", upstreamURL)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	req.Header.Set(headerAcceptEncoding, "gzip")
-	resp, err := h.proxy.HTTPClient.Do(req)
+	// Copy accept-encoding for compression
 	if ae := r.Header.Get("Accept-Encoding"); ae != "" {
 		req.Header.Set("Accept-Encoding", ae)
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
@ -154,96 +144,12 @@ func (h *CondaHandler) handleRepodata(w http.ResponseWriter, r *http.Request) {
 	}
 	defer func() { _ = resp.Body.Close() }()
-	if resp.StatusCode != http.StatusOK {
+	for k, vv := range resp.Header {
-		for k, vv := range resp.Header {
+		for _, v := range vv {
-			for _, v := range vv {
+			w.Header().Add(k, v)
 				w.Header().Add(k, v)
 			}
 		}
 		w.WriteHeader(resp.StatusCode)
 		_, _ = io.Copy(w, resp.Body)
 		return
 	}
 	body, err := h.proxy.ReadMetadata(resp.Body)
 	if err != nil {
 		http.Error(w, "failed to read response", http.StatusInternalServerError)
 		return
 	}
 	filtered, err := h.applyCooldownFiltering(body)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to filter repodata, proxying original", "error", err)
 		w.Header().Set(headerContentType, "application/json")
 		_, _ = w.Write(body)
 		return
 	}
 	w.Header().Set(headerContentType, "application/json")
 	_, _ = w.Write(filtered)
 }
 // condaTimestampDivisor converts Conda's millisecond timestamps to seconds.
 const condaTimestampDivisor = 1000
 // applyCooldownFiltering removes entries from repodata.json that were
 // published too recently based on their timestamp field.
 func (h *CondaHandler) applyCooldownFiltering(body []byte) ([]byte, error) {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		return body, nil
 	}
 	var repodata map[string]any
 	if err := json.Unmarshal(body, &repodata); err != nil {
 		return nil, err
 	}
 	for _, key := range []string{"packages", "packages.conda"} {
 		packages, ok := repodata[key].(map[string]any)
 		if !ok {
 			continue
 		}
 		for filename, entry := range packages {
 			entryMap, ok := entry.(map[string]any)
 			if !ok {
 				continue
 			}
 			ts, ok := entryMap["timestamp"].(float64)
 			if !ok || ts == 0 {
 				continue
 			}
 			publishedAt := time.Unix(int64(ts)/condaTimestampDivisor, 0)
 			name, _ := entryMap["name"].(string)
 			if name == "" {
 				continue
 			}
 			packagePURL := canonicalPackagePURL("conda", name)
 			if !h.proxy.Cooldown.IsAllowed("conda", packagePURL, publishedAt) {
 				version, _ := entryMap["version"].(string)
 				h.proxy.Logger.Info("cooldown: filtering conda package",
 					"name", name, "version", version, "filename", filename)
 				delete(packages, filename)
 			}
 		}
 	}
-	return json.Marshal(repodata)
+	w.WriteHeader(resp.StatusCode)
-}
+	_, _ = io.Copy(w, resp.Body)
 // proxyCached forwards a metadata request with caching.
 func (h *CondaHandler) proxyCached(w http.ResponseWriter, r *http.Request) {
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	cacheKey = strings.ReplaceAll(cacheKey, "/", "_")
 	h.proxy.ProxyCached(w, r, h.upstreamURL+r.URL.Path, "conda", cacheKey, "*/*")
 }
 // proxyUpstream forwards a request to Anaconda without caching.
 func (h *CondaHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, []string{headerAcceptEncoding})
 }
--- a/internal/handler/conda_test.go
+++ b/internal/handler/conda_test.go
@ -1,14 +1,8 @@
 package handler
 import (
 	"encoding/json"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 )
 func TestCondaParseFilename(t *testing.T) {
@ -55,251 +49,3 @@ func TestCondaIsPackageFile(t *testing.T) {
 		}
 	}
 }
 func TestCondaCooldownFiltering(t *testing.T) {
 	now := time.Now()
 	oldTimestamp := float64(now.Add(-7 * 24 * time.Hour).UnixMilli())
 	recentTimestamp := float64(now.Add(-1 * time.Hour).UnixMilli())
 	repodata := map[string]any{
 		"info": map[string]any{},
 		"packages": map[string]any{
 			"numpy-1.24.0-old.tar.bz2": map[string]any{
 				"name":      "numpy",
 				"version":   "1.24.0",
 				"timestamp": oldTimestamp,
 			},
 			"numpy-1.25.0-new.tar.bz2": map[string]any{
 				"name":      "numpy",
 				"version":   "1.25.0",
 				"timestamp": recentTimestamp,
 			},
 		},
 		"packages.conda": map[string]any{
 			"scipy-1.11.0-old.conda": map[string]any{
 				"name":      "scipy",
 				"version":   "1.11.0",
 				"timestamp": oldTimestamp,
 			},
 			"scipy-1.12.0-new.conda": map[string]any{
 				"name":      "scipy",
 				"version":   "1.12.0",
 				"timestamp": recentTimestamp,
 			},
 		},
 	}
 	body, err := json.Marshal(repodata)
 	if err != nil {
 		t.Fatal(err)
 	}
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &CondaHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	filtered, err := h.applyCooldownFiltering(body)
 	if err != nil {
 		t.Fatal(err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(filtered, &result); err != nil {
 		t.Fatal(err)
 	}
 	packages := result["packages"].(map[string]any)
 	if len(packages) != 1 {
 		t.Fatalf("expected 1 package in packages, got %d", len(packages))
 	}
 	if _, ok := packages["numpy-1.24.0-old.tar.bz2"]; !ok {
 		t.Error("expected old numpy to survive filtering")
 	}
 	condaPkgs := result["packages.conda"].(map[string]any)
 	if len(condaPkgs) != 1 {
 		t.Fatalf("expected 1 package in packages.conda, got %d", len(condaPkgs))
 	}
 	if _, ok := condaPkgs["scipy-1.11.0-old.conda"]; !ok {
 		t.Error("expected old scipy to survive filtering")
 	}
 }
 func TestCondaCooldownFilteringWithPackageOverride(t *testing.T) {
 	now := time.Now()
 	recentTimestamp := float64(now.Add(-2 * time.Hour).UnixMilli())
 	repodata := map[string]any{
 		"info": map[string]any{},
 		"packages": map[string]any{
 			"special-1.0.0-build.tar.bz2": map[string]any{
 				"name":      "special",
 				"version":   "1.0.0",
 				"timestamp": recentTimestamp,
 			},
 		},
 		"packages.conda": map[string]any{},
 	}
 	body, err := json.Marshal(repodata)
 	if err != nil {
 		t.Fatal(err)
 	}
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default:  "3d",
 		Packages: map[string]string{"pkg:conda/special": "1h"},
 	}
 	h := &CondaHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	filtered, err := h.applyCooldownFiltering(body)
 	if err != nil {
 		t.Fatal(err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(filtered, &result); err != nil {
 		t.Fatal(err)
 	}
 	packages := result["packages"].(map[string]any)
 	if len(packages) != 1 {
 		t.Fatalf("expected 1 package (override allows it), got %d", len(packages))
 	}
 }
 func TestCondaCooldownFilteringNoTimestamp(t *testing.T) {
 	repodata := map[string]any{
 		"info": map[string]any{},
 		"packages": map[string]any{
 			"old-pkg-1.0.0-build.tar.bz2": map[string]any{
 				"name":    "old-pkg",
 				"version": "1.0.0",
 				// no timestamp field
 			},
 		},
 		"packages.conda": map[string]any{},
 	}
 	body, err := json.Marshal(repodata)
 	if err != nil {
 		t.Fatal(err)
 	}
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &CondaHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	filtered, err := h.applyCooldownFiltering(body)
 	if err != nil {
 		t.Fatal(err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(filtered, &result); err != nil {
 		t.Fatal(err)
 	}
 	packages := result["packages"].(map[string]any)
 	if len(packages) != 1 {
 		t.Fatalf("entries without timestamp should pass through, got %d", len(packages))
 	}
 }
 func TestCondaHandleRepodataWithCooldown(t *testing.T) {
 	now := time.Now()
 	oldTimestamp := float64(now.Add(-7 * 24 * time.Hour).UnixMilli())
 	recentTimestamp := float64(now.Add(-1 * time.Hour).UnixMilli())
 	repodataJSON, _ := json.Marshal(map[string]any{
 		"info": map[string]any{},
 		"packages": map[string]any{
 			"old-1.0.0-build.tar.bz2": map[string]any{
 				"name": "testpkg", "version": "1.0.0", "timestamp": oldTimestamp,
 			},
 			"new-2.0.0-build.tar.bz2": map[string]any{
 				"name": "testpkg", "version": "2.0.0", "timestamp": recentTimestamp,
 			},
 		},
 		"packages.conda": map[string]any{},
 	})
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write(repodataJSON)
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &CondaHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/conda-forge/noarch/repodata.json", nil)
 	req.SetPathValue("channel", "conda-forge")
 	req.SetPathValue("arch", "noarch")
 	w := httptest.NewRecorder()
 	h.handleRepodata(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(w.Body.Bytes(), &result); err != nil {
 		t.Fatal(err)
 	}
 	packages := result["packages"].(map[string]any)
 	if len(packages) != 1 {
 		t.Fatalf("expected 1 package after filtering, got %d", len(packages))
 	}
 }
 func TestCondaHandleRepodataWithoutCooldown(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write([]byte(`{"info":{},"packages":{},"packages.conda":{}}`))
 	}))
 	defer upstream.Close()
 	h := &CondaHandler{
 		proxy:       &Proxy{Logger: slog.Default(), HTTPClient: http.DefaultClient},
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/conda-forge/noarch/repodata.json", nil)
 	req.SetPathValue("channel", "conda-forge")
 	req.SetPathValue("arch", "noarch")
 	w := httptest.NewRecorder()
 	h.handleRepodata(w, req)
 	// Without cooldown, should proxy directly (response comes from upstream)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
--- a/internal/handler/container.go
+++ b/internal/handler/container.go
@ -2,96 +2,36 @@ package handler
 import (
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"regexp"
 	"strings"
 )
 const (
-	dockerHubRegistry     = "https://registry-1.docker.io"
+	dockerHubRegistry = "https://registry-1.docker.io"
-	blobMatchCount        = 3 // full match + name + digest
+	dockerHubAuth     = "https://auth.docker.io"
 	manifestMatchCount    = 3 // full match + name + reference
 	tagsListMatchCount    = 2 // full match + name
 	registrySelectorParts = 3 // upstream + name + repository
 )
 // ContainerHandler handles OCI/Docker container registry protocol requests.
 // It implements the OCI Distribution Spec for pulling images.
 // Reference: https://github.com/opencontainers/distribution-spec/blob/main/spec.md
 type ContainerHandler struct {
-	proxy           *Proxy
+	proxy       *Proxy
-	registryURL     string
+	registryURL string
-	proxyURL        string
+	authURL     string
-	namedRegistries map[string]string
+	proxyURL    string
 	registries      []containerRegistry
 }
 type containerRegistry struct {
 	repositoryPrefix string
 	registryURL      string
 }
 // NewContainerHandler creates a new container registry protocol handler.
-// Named registries are selected with the repository prefix
+func NewContainerHandler(proxy *Proxy, proxyURL string) *ContainerHandler {
-// upstream/{name}/, leaving unprefixed requests compatible with the Docker Hub
+	return &ContainerHandler{
 // mirror behavior.
 func NewContainerHandler(proxy *Proxy, proxyURL string, namedRegistries ...map[string]string) *ContainerHandler {
 	h := &ContainerHandler{
 		proxy:       proxy,
 		registryURL: dockerHubRegistry,
 		authURL:     dockerHubAuth,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 	if len(namedRegistries) > 0 {
 		h.namedRegistries = make(map[string]string, len(namedRegistries[0]))
 		for name, registryURL := range namedRegistries[0] {
 			h.namedRegistries[name] = strings.TrimSuffix(registryURL, "/")
 		}
 	}
 	return h
 }
 // NewContainerHandlerWithRegistry creates a container handler with a custom
 // default registry and optional named registries.
 func NewContainerHandlerWithRegistry(
 	proxy *Proxy,
 	proxyURL, registryURL string,
 	namedRegistries ...map[string]string,
 ) *ContainerHandler {
 	h := NewContainerHandler(proxy, proxyURL, namedRegistries...)
 	h.registryURL = configuredUpstreamURL(registryURL, dockerHubRegistry)
 	return h
 }
 // RegisterRegistry routes a repository and its descendants to a specific OCI
 // registry. The longest matching repository prefix wins.
 func (h *ContainerHandler) RegisterRegistry(repositoryPrefix, registryURL string) {
 	h.registries = append(h.registries, containerRegistry{
 		repositoryPrefix: strings.Trim(repositoryPrefix, "/"),
 		registryURL:      strings.TrimSuffix(registryURL, "/"),
 	})
 }
 // BlockRegistry prevents a repository and its descendants from falling back to
 // the default OCI registry. A more specific registered repository still wins.
 func (h *ContainerHandler) BlockRegistry(repositoryPrefix string) {
 	h.RegisterRegistry(repositoryPrefix, "")
 }
 func (h *ContainerHandler) registryURLFor(name string) string {
 	registryURL := h.registryURL
 	matchLength := 0
 	for _, registry := range h.registries {
 		if name != registry.repositoryPrefix && !strings.HasPrefix(name, registry.repositoryPrefix+"/") {
 			continue
 		}
 		if len(registry.repositoryPrefix) > matchLength {
 			registryURL = registry.registryURL
 			matchLength = len(registry.repositoryPrefix)
 		}
 	}
 	return registryURL
 }
 // Routes returns the HTTP handler for container registry requests.
@ -144,74 +84,46 @@ func (h *ContainerHandler) handleBlobDownload(w http.ResponseWriter, r *http.Req
 		return
 	}
-	registryURL, upstreamName, cacheName, ok := h.registryForName(name)
+	h.proxy.Logger.Info("container blob request", "name", name, "digest", digest)
 	if !ok {
 		h.containerError(w, http.StatusNotFound, "NAME_UNKNOWN", "unknown upstream registry")
 		return
 	}
-	h.proxy.Logger.Info("container blob request", "name", upstreamName, "digest", digest)
+	// Get auth token for upstream
-
+	token, err := h.getAuthToken(r.Context(), name, "pull")
 	filename := digest
 	cached, err := h.proxy.GetCachedArtifact(r.Context(), "oci", cacheName, digest, filename)
 	if err != nil {
-		h.proxy.Logger.Error("failed to check blob cache", "error", err)
+		h.proxy.Logger.Error("failed to get auth token", "error", err)
-		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to check blob cache")
+		h.containerError(w, http.StatusUnauthorized, "UNAUTHORIZED", "failed to authenticate")
 		return
 	}
 	if cached != nil {
 		w.Header().Set("Docker-Content-Digest", digest)
 		if cached.Artifact.MediaType == "" {
 			cached.Artifact.MediaType = "application/octet-stream"
 		}
 		serveArtifact(w, r.Method, cached)
 		return
 	}
 	// For HEAD requests, just proxy to upstream
 	if r.Method == http.MethodHead {
-		h.proxyBlobHead(w, r, registryURL, upstreamName, digest)
+		h.proxyBlobHead(w, r, name, digest, token)
 		return
 	}
-	// Try to get from cache, or fetch from the authentication-aware upstream client.
+	// Try to get from cache first
-	result, err := h.proxy.GetOrFetchArtifactFromURLWithDigest(
+	filename := digest
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(),
 		"oci",
-		cacheName,
+		name,
 		digest, // use digest as version
 		filename,
-		fmt.Sprintf("%s/v2/%s/blobs/%s", registryURL, upstreamName, digest),
+		fmt.Sprintf("%s/v2/%s/blobs/%s", h.registryURL, name, digest),
 		digest,
 	)
 	if err != nil {
-		if errors.Is(err, ErrUpstreamNotFound) {
+		// Fetch directly with auth
-			h.containerError(w, http.StatusNotFound, "BLOB_UNKNOWN", "blob unknown to registry")
+		h.proxyBlobWithAuth(w, r, name, digest, token)
 			return
 		}
 		if errors.Is(err, ErrArtifactBlocked) {
 			h.containerError(w, http.StatusForbidden, "DENIED", err.Error())
 			return
 		}
 		if errors.Is(err, ErrArtifactDigestMismatch) {
 			h.proxy.Logger.Error("upstream blob failed digest verification", "error", err)
 			h.containerError(w, http.StatusBadGateway, "DIGEST_INVALID", "blob digest verification failed")
 			return
 		}
 		h.proxy.Logger.Error("failed to fetch blob", "error", err)
 		h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch blob")
 		return
 	}
 	w.Header().Set("Docker-Content-Digest", digest)
-	if result.Artifact.MediaType == "" {
+	w.Header().Set("Content-Type", "application/octet-stream")
 		result.Artifact.MediaType = "application/octet-stream"
 	}
 	ServeArtifact(w, result)
 }
-// handleManifest serves immutable manifests from cache and revalidates mutable tags.
+// handleManifest proxies manifest requests to upstream.
 // Manifests change when tags are updated, so we proxy these directly.
 // Path format: {name}/manifests/{reference}
 func (h *ContainerHandler) handleManifest(w http.ResponseWriter, r *http.Request, path string) {
 	if r.Method != http.MethodGet && r.Method != http.MethodHead {
@ -225,17 +137,61 @@ func (h *ContainerHandler) handleManifest(w http.ResponseWriter, r *http.Request
 		return
 	}
-	registryURL, upstreamName, _, ok := h.registryForName(name)
+	h.proxy.Logger.Info("container manifest request", "name", name, "reference", reference)
-	if !ok {
+
-		h.containerError(w, http.StatusNotFound, "NAME_UNKNOWN", "unknown upstream registry")
+	// Get auth token
 	token, err := h.getAuthToken(r.Context(), name, "pull")
 	if err != nil {
 		h.proxy.Logger.Error("failed to get auth token", "error", err)
 		h.containerError(w, http.StatusUnauthorized, "UNAUTHORIZED", "failed to authenticate")
 		return
 	}
-	h.proxy.Logger.Info("container manifest request", "name", upstreamName, "reference", reference)
+	// Proxy to upstream
-	h.serveManifest(w, r, registryURL, upstreamName, reference)
+	upstreamURL := fmt.Sprintf("%s/v2/%s/manifests/%s", h.registryURL, name, reference)
 	req, err := http.NewRequestWithContext(r.Context(), r.Method, upstreamURL, nil)
 	if err != nil {
 		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to create request")
 		return
 	}
 	req.Header.Set("Authorization", "Bearer "+token)
 	// Forward Accept header for content negotiation
 	if accept := r.Header.Get("Accept"); accept != "" {
 		req.Header.Set("Accept", accept)
 	} else {
 		// Default accept headers for manifests
 		req.Header.Set("Accept", strings.Join([]string{
 			"application/vnd.oci.image.manifest.v1+json",
 			"application/vnd.oci.image.index.v1+json",
 			"application/vnd.docker.distribution.manifest.v2+json",
 			"application/vnd.docker.distribution.manifest.list.v2+json",
 			"application/vnd.docker.distribution.manifest.v1+prettyjws",
 		}, ", "))
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("failed to fetch manifest", "error", err)
 		h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	// Copy relevant headers
 	for _, header := range []string{"Content-Type", "Content-Length", "Docker-Content-Digest", "ETag"} {
 		if v := resp.Header.Get(header); v != "" {
 			w.Header().Set(header, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
-// handleTagsList caches tag list responses for offline OCI pulls.
+// handleTagsList proxies tag list requests to upstream.
 func (h *ContainerHandler) handleTagsList(w http.ResponseWriter, r *http.Request, path string) {
 	if r.Method != http.MethodGet {
 		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
@ -248,18 +204,78 @@ func (h *ContainerHandler) handleTagsList(w http.ResponseWriter, r *http.Request
 		return
 	}
-	registryURL, upstreamName, _, ok := h.registryForName(name)
+	// Get auth token
-	if !ok {
+	token, err := h.getAuthToken(r.Context(), name, "pull")
-		h.containerError(w, http.StatusNotFound, "NAME_UNKNOWN", "unknown upstream registry")
+	if err != nil {
 		h.containerError(w, http.StatusUnauthorized, "UNAUTHORIZED", "failed to authenticate")
 		return
 	}
-	h.serveTagsList(w, r, registryURL, upstreamName)
+	upstreamURL := fmt.Sprintf("%s/v2/%s/tags/list", h.registryURL, name)
 	if r.URL.RawQuery != "" {
 		upstreamURL += "?" + r.URL.RawQuery
 	}
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to create request")
 		return
 	}
 	req.Header.Set("Authorization", "Bearer "+token)
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
 // getAuthToken gets a bearer token for the specified repository.
 // Docker Hub requires auth even for public images.
 func (h *ContainerHandler) getAuthToken(_ interface{ Done() <-chan struct{} }, repository, action string) (string, error) {
 	// For Docker Hub: https://auth.docker.io/token?service=registry.docker.io&scope=repository:{repo}:pull
 	authURL := fmt.Sprintf("%s/token?service=registry.docker.io&scope=repository:%s:%s",
 		h.authURL, repository, action)
 	req, err := http.NewRequest(http.MethodGet, authURL, nil)
 	if err != nil {
 		return "", err
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		return "", err
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		return "", fmt.Errorf("auth failed with status %d", resp.StatusCode)
 	}
 	var tokenResp struct {
 		Token       string `json:"token"`
 		AccessToken string `json:"access_token"`
 	}
 	if err := json.NewDecoder(resp.Body).Decode(&tokenResp); err != nil {
 		return "", err
 	}
 	if tokenResp.Token != "" {
 		return tokenResp.Token, nil
 	}
 	return tokenResp.AccessToken, nil
 }
 // proxyBlobHead handles HEAD requests for blobs.
-func (h *ContainerHandler) proxyBlobHead(w http.ResponseWriter, r *http.Request, registryURL, name, digest string) {
+func (h *ContainerHandler) proxyBlobHead(w http.ResponseWriter, r *http.Request, name, digest, token string) {
-	upstreamURL := fmt.Sprintf("%s/v2/%s/blobs/%s", registryURL, name, digest)
+	upstreamURL := fmt.Sprintf("%s/v2/%s/blobs/%s", h.registryURL, name, digest)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodHead, upstreamURL, nil)
 	if err != nil {
@ -267,51 +283,56 @@ func (h *ContainerHandler) proxyBlobHead(w http.ResponseWriter, r *http.Request,
 		return
 	}
-	resp, err := h.proxy.HTTPClient.Do(req)
+	req.Header.Set("Authorization", "Bearer "+token)
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
-	for _, header := range []string{headerContentType, headerContentLength, "Docker-Content-Digest", headerETag, headerLastModified} {
+	for _, header := range []string{"Content-Type", "Content-Length", "Docker-Content-Digest"} {
 		if v := resp.Header.Get(header); v != "" {
 			w.Header().Set(header, v)
 		}
 	}
 	if resp.StatusCode >= http.StatusOK && resp.StatusCode < http.StatusMultipleChoices && w.Header().Get("Docker-Content-Digest") == "" {
 		w.Header().Set("Docker-Content-Digest", digest)
 	}
 	w.WriteHeader(resp.StatusCode)
 }
-// registryForName resolves a client-visible OCI repository name to an upstream
+// proxyBlobWithAuth proxies a blob download with authentication.
-// registry and its repository name. Named upstreams use upstream/{name}/ as a
+func (h *ContainerHandler) proxyBlobWithAuth(w http.ResponseWriter, r *http.Request, name, digest, token string) {
-// reserved prefix. Other names are matched against registered repository
+	upstreamURL := fmt.Sprintf("%s/v2/%s/blobs/%s", h.registryURL, name, digest)
-// prefixes, falling back to Docker Hub when no prefix matches.
+
-func (h *ContainerHandler) registryForName(name string) (registryURL, upstreamName, cacheName string, ok bool) {
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
-	parts := strings.SplitN(name, "/", registrySelectorParts)
+	if err != nil {
-	if len(parts) >= 2 && parts[0] == "upstream" {
+		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to create request")
-		if len(parts) != registrySelectorParts || parts[2] == "" {
+		return
 			return "", "", "", false
 		}
 		registryURL, ok = h.namedRegistries[parts[1]]
 		if !ok || registryURL == "" {
 			return "", "", "", false
 		}
 		return registryURL, parts[2], name, true
 	}
-	registryURL = h.registryURLFor(name)
+
-	if registryURL == "" {
+	req.Header.Set("Authorization", "Bearer "+token)
-		return "", "", "", false
+
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 		return
 	}
-	return registryURL, name, name, true
+	defer func() { _ = resp.Body.Close() }()
 	for _, header := range []string{"Content-Type", "Content-Length", "Docker-Content-Digest"} {
 		if v := resp.Header.Get(header); v != "" {
 			w.Header().Set(header, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
 // containerError writes an OCI-compliant error response.
 func (h *ContainerHandler) containerError(w http.ResponseWriter, status int, code, message string) {
-	w.Header().Set(headerContentType, "application/json")
+	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(status)
 	_ = json.NewEncoder(w).Encode(map[string]any{
 		"errors": []map[string]string{
@ -326,7 +347,7 @@ var blobPathPattern = regexp.MustCompile(`^(.+)/blobs/(sha256:[a-f0-9]+)$`)
 // parseBlobPath extracts repository name and digest from a blob path.
 func (h *ContainerHandler) parseBlobPath(path string) (name, digest string) {
 	matches := blobPathPattern.FindStringSubmatch(path)
-	if len(matches) != blobMatchCount {
+	if len(matches) != 3 {
 		return "", ""
 	}
 	return matches[1], matches[2]
@ -338,7 +359,7 @@ var manifestPathPattern = regexp.MustCompile(`^(.+)/manifests/(.+)$`)
 // parseManifestPath extracts repository name and reference from a manifest path.
 func (h *ContainerHandler) parseManifestPath(path string) (name, reference string) {
 	matches := manifestPathPattern.FindStringSubmatch(path)
-	if len(matches) != manifestMatchCount {
+	if len(matches) != 3 {
 		return "", ""
 	}
 	return matches[1], matches[2]
@ -350,7 +371,7 @@ var tagsListPathPattern = regexp.MustCompile(`^(.+)/tags/list$`)
 // parseTagsListPath extracts repository name from a tags list path.
 func (h *ContainerHandler) parseTagsListPath(path string) string {
 	matches := tagsListPathPattern.FindStringSubmatch(path)
-	if len(matches) != tagsListMatchCount {
+	if len(matches) != 2 {
 		return ""
 	}
 	return matches[1]
--- a/internal/handler/container_manifest.go
+++ b/internal/handler/container_manifest.go
@ -1,434 +0,0 @@
 package handler
 import (
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"io"
 	"mime"
 	"net/http"
 	"regexp"
 	"sort"
 	"strconv"
 	"strings"
 	"time"
 )
 const (
 	containerManifestCacheEcosystem = "oci-manifest"
 	containerStaleWarning           = `110 - "Response is Stale"`
 	containerAcceptWildcardSpecificity = iota
 	containerAcceptTypeWildcardSpecificity
 	containerAcceptExactSpecificity
 )
 var manifestDigestReferencePattern = regexp.MustCompile(`^[a-z0-9]+:[a-f0-9]+$`)
 type cachedContainerManifest struct {
 	body          []byte
 	contentType   string
 	contentDigest string
 	etag          string
 	size          int64
 	lastModified  time.Time
 	fetchedAt     time.Time
 }
 func (h *ContainerHandler) serveManifest(w http.ResponseWriter, r *http.Request, registryURL, name, reference string) {
 	accept := containerManifestAccept(r)
 	cacheAccept := normalizeContainerManifestAccept(accept)
 	cacheKey := h.containerManifestCacheKey(registryURL, name, reference, cacheAccept)
 	cached := h.loadContainerManifestForAccept(r.Context(), registryURL, name, reference, accept, cacheKey)
 	immutable := manifestDigestReferencePattern.MatchString(reference)
 	if cached != nil && (immutable || h.containerManifestFresh(cached)) {
 		writeContainerManifest(w, r, cached, false)
 		return
 	}
 	upstreamURL := fmt.Sprintf("%s/v2/%s/manifests/%s", registryURL, name, reference)
 	req, err := http.NewRequestWithContext(r.Context(), r.Method, upstreamURL, nil)
 	if err != nil {
 		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to create request")
 		return
 	}
 	req.Header.Set("Accept", accept)
 	if cached != nil && cached.etag != "" {
 		req.Header.Set("If-None-Match", cached.etag)
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		h.serveStaleManifestOrError(w, r, cached, err)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode == http.StatusNotModified && cached != nil {
 		cached.fetchedAt = time.Now()
 		h.storeContainerManifestForAccept(r.Context(), registryURL, name, reference, accept, cacheAccept, cached)
 		writeContainerManifest(w, r, cached, false)
 		return
 	}
 	if resp.StatusCode != http.StatusOK {
 		if cached != nil && shouldServeStaleManifest(resp.StatusCode) {
 			writeContainerManifest(w, r, cached, true)
 			return
 		}
 		copyContainerManifestHeaders(w.Header(), resp.Header)
 		w.WriteHeader(resp.StatusCode)
 		_, _ = io.Copy(w, resp.Body)
 		return
 	}
 	if r.Method == http.MethodHead {
 		copyContainerManifestHeaders(w.Header(), resp.Header)
 		w.WriteHeader(http.StatusOK)
 		return
 	}
 	body, err := h.proxy.ReadMetadata(resp.Body)
 	if err != nil {
 		h.serveStaleManifestOrError(w, r, cached, fmt.Errorf("reading manifest: %w", err))
 		return
 	}
 	computedDigest := sha256Digest(body)
 	contentDigest := resp.Header.Get("Docker-Content-Digest")
 	for _, expected := range []string{reference, contentDigest} {
 		if strings.HasPrefix(expected, "sha256:") && expected != computedDigest {
 			h.proxy.Logger.Error("upstream manifest failed digest verification",
 				"name", name, "reference", reference, "expected", expected, "actual", computedDigest)
 			h.containerError(w, http.StatusBadGateway, "DIGEST_INVALID", "manifest digest verification failed")
 			return
 		}
 	}
 	if contentDigest == "" {
 		contentDigest = computedDigest
 	}
 	manifest := &cachedContainerManifest{
 		body:          body,
 		contentType:   resp.Header.Get(headerContentType),
 		contentDigest: contentDigest,
 		etag:          resp.Header.Get(headerETag),
 		size:          int64(len(body)),
 		lastModified:  parseHTTPTime(resp.Header.Get(headerLastModified)),
 		fetchedAt:     time.Now(),
 	}
 	h.storeContainerManifestForAccept(r.Context(), registryURL, name, reference, accept, cacheAccept, manifest)
 	if manifest.contentDigest != reference && manifestDigestReferencePattern.MatchString(manifest.contentDigest) {
 		h.storeContainerManifestForAccept(r.Context(), registryURL, name, manifest.contentDigest, accept, cacheAccept, manifest)
 	}
 	writeContainerManifest(w, r, manifest, false)
 }
 func (h *ContainerHandler) serveStaleManifestOrError(w http.ResponseWriter, r *http.Request, cached *cachedContainerManifest, err error) {
 	if cached != nil {
 		h.proxy.Logger.Warn("upstream manifest fetch failed, serving stale cache", "error", err)
 		writeContainerManifest(w, r, cached, true)
 		return
 	}
 	h.proxy.Logger.Error("failed to fetch manifest", "error", err)
 	h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 }
 func (h *ContainerHandler) containerManifestFresh(manifest *cachedContainerManifest) bool {
 	return h.proxy.MetadataTTL > 0 && !manifest.fetchedAt.IsZero() && time.Since(manifest.fetchedAt) < h.proxy.MetadataTTL
 }
 func (h *ContainerHandler) containerManifestCacheKey(registryURL, name, reference, accept string) string {
 	identity := strings.Join([]string{registryURL, name, reference, accept}, "\x00")
 	sum := sha256.Sum256([]byte(identity))
 	return hex.EncodeToString(sum[:])
 }
 func (h *ContainerHandler) loadContainerManifestForAccept(ctx context.Context, registryURL, name, reference, accept, cacheKey string) *cachedContainerManifest {
 	cached, err := h.loadContainerManifest(ctx, cacheKey)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to read cached container manifest", "error", err)
 		return nil
 	}
 	if cached != nil {
 		if containerManifestCacheCompatible(accept, cached) {
 			return cached
 		}
 		return nil
 	}
 	legacyCacheKey := h.containerManifestCacheKey(registryURL, name, reference, accept)
 	if legacyCacheKey == cacheKey {
 		return nil
 	}
 	cached, err = h.loadContainerManifest(ctx, legacyCacheKey)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to read legacy cached container manifest", "error", err)
 		return nil
 	}
 	if cached == nil || !containerManifestCacheCompatible(accept, cached) {
 		return nil
 	}
 	if err := h.storeContainerManifest(ctx, cacheKey, cached); err != nil {
 		h.proxy.Logger.Warn("failed to migrate cached container manifest", "error", err)
 	}
 	return cached
 }
 func (h *ContainerHandler) storeContainerManifestForAccept(ctx context.Context, registryURL, name, reference, accept, cacheAccept string, manifest *cachedContainerManifest) {
 	cacheKey := h.containerManifestCacheKey(registryURL, name, reference, cacheAccept)
 	if err := h.storeContainerManifest(ctx, cacheKey, manifest); err != nil {
 		h.proxy.Logger.Warn("failed to cache container manifest", "error", err)
 	}
 	legacyCacheKey := h.containerManifestCacheKey(registryURL, name, reference, accept)
 	if legacyCacheKey == cacheKey {
 		return
 	}
 	if err := h.storeContainerManifest(ctx, legacyCacheKey, manifest); err != nil {
 		h.proxy.Logger.Warn("failed to cache legacy container manifest", "error", err)
 	}
 }
 func (h *ContainerHandler) loadContainerManifest(ctx context.Context, cacheKey string) (*cachedContainerManifest, error) {
 	if h.proxy.DB == nil || h.proxy.Storage == nil {
 		return nil, nil
 	}
 	entry, err := h.proxy.DB.GetMetadataCache(containerManifestCacheEcosystem, cacheKey)
 	if err != nil || entry == nil {
 		return nil, err
 	}
 	reader, err := h.proxy.Storage.Open(ctx, entry.StoragePath)
 	if err != nil {
 		return nil, nil
 	}
 	defer func() { _ = reader.Close() }()
 	body, err := h.proxy.ReadMetadata(reader)
 	if err != nil {
 		return nil, err
 	}
 	manifest := &cachedContainerManifest{body: body, size: int64(len(body))}
 	if entry.ContentType.Valid {
 		manifest.contentType = entry.ContentType.String
 	}
 	if entry.ContentDigest.Valid {
 		manifest.contentDigest = entry.ContentDigest.String
 	} else {
 		manifest.contentDigest = sha256Digest(body)
 	}
 	if entry.ETag.Valid {
 		manifest.etag = entry.ETag.String
 	}
 	if entry.Size.Valid {
 		manifest.size = entry.Size.Int64
 	}
 	if entry.LastModified.Valid {
 		manifest.lastModified = entry.LastModified.Time
 	}
 	if entry.FetchedAt.Valid {
 		manifest.fetchedAt = entry.FetchedAt.Time
 	}
 	return manifest, nil
 }
 func (h *ContainerHandler) storeContainerManifest(ctx context.Context, cacheKey string, manifest *cachedContainerManifest) error {
 	size, err := h.storeContainerMetadata(ctx, containerManifestCacheEcosystem, cacheKey, manifest.body,
 		manifest.etag, "", manifest.contentType, manifest.contentDigest, manifest.lastModified, manifest.fetchedAt)
 	if err != nil {
 		return fmt.Errorf("storing manifest: %w", err)
 	}
 	manifest.size = size
 	return nil
 }
 func writeContainerManifest(w http.ResponseWriter, r *http.Request, manifest *cachedContainerManifest, stale bool) {
 	if manifest.contentType != "" {
 		w.Header().Set(headerContentType, manifest.contentType)
 	}
 	w.Header().Set(headerContentLength, strconv.FormatInt(manifest.size, 10))
 	if manifest.contentDigest != "" {
 		w.Header().Set("Docker-Content-Digest", manifest.contentDigest)
 	}
 	if manifest.etag != "" {
 		w.Header().Set(headerETag, manifest.etag)
 	}
 	if !manifest.lastModified.IsZero() {
 		w.Header().Set(headerLastModified, manifest.lastModified.UTC().Format(http.TimeFormat))
 	}
 	if stale {
 		w.Header().Set("Warning", containerStaleWarning)
 	}
 	if ifNoneMatchHits(r.Header.Get("If-None-Match"), manifest.etag) {
 		w.WriteHeader(http.StatusNotModified)
 		return
 	}
 	if !manifest.lastModified.IsZero() {
 		if modifiedSince, err := http.ParseTime(r.Header.Get("If-Modified-Since")); err == nil && !manifest.lastModified.After(modifiedSince) {
 			w.WriteHeader(http.StatusNotModified)
 			return
 		}
 	}
 	w.WriteHeader(http.StatusOK)
 	if r.Method != http.MethodHead {
 		_, _ = w.Write(manifest.body)
 	}
 }
 func containerManifestAccept(r *http.Request) string {
 	if accept := r.Header.Get("Accept"); accept != "" {
 		return accept
 	}
 	return strings.Join([]string{
 		"application/vnd.oci.image.manifest.v1+json",
 		"application/vnd.oci.image.index.v1+json",
 		"application/vnd.docker.distribution.manifest.v2+json",
 		"application/vnd.docker.distribution.manifest.list.v2+json",
 		"application/vnd.docker.distribution.manifest.v1+prettyjws",
 	}, ", ")
 }
 func normalizeContainerManifestAccept(accept string) string {
 	mediaTypes := make(map[string]struct{})
 	for _, value := range strings.Split(accept, ",") {
 		value = strings.TrimSpace(value)
 		if value == "" {
 			continue
 		}
 		mediaType, params, err := mime.ParseMediaType(value)
 		if err != nil {
 			mediaTypes[strings.ToLower(value)] = struct{}{}
 			continue
 		}
 		paramKeys := make([]string, 0, len(params))
 		for key := range params {
 			paramKeys = append(paramKeys, key)
 		}
 		sort.Strings(paramKeys)
 		canonical := strings.ToLower(mediaType)
 		for _, key := range paramKeys {
 			value := params[key]
 			if strings.EqualFold(key, "q") {
 				if quality, err := strconv.ParseFloat(value, 64); err == nil {
 					if quality == 1 {
 						continue
 					}
 					value = strconv.FormatFloat(quality, 'g', -1, 64)
 				}
 			}
 			canonical += ";" + strings.ToLower(key) + "=" + value
 		}
 		mediaTypes[canonical] = struct{}{}
 	}
 	canonicalMediaTypes := make([]string, 0, len(mediaTypes))
 	for mediaType := range mediaTypes {
 		canonicalMediaTypes = append(canonicalMediaTypes, mediaType)
 	}
 	sort.Strings(canonicalMediaTypes)
 	return strings.Join(canonicalMediaTypes, ",")
 }
 func containerManifestAccepts(accept, contentType string) bool {
 	contentType, contentParams, err := mime.ParseMediaType(contentType)
 	if err != nil {
 		return false
 	}
 	contentType = strings.ToLower(contentType)
 	contentMajor, contentMinor, found := strings.Cut(contentType, "/")
 	if !found {
 		return false
 	}
 	bestMediaTypeSpecificity := -1
 	bestParameterSpecificity := 0
 	bestQuality := 0.0
 	for _, value := range strings.Split(accept, ",") {
 		mediaType, params, err := mime.ParseMediaType(strings.TrimSpace(value))
 		if err != nil {
 			continue
 		}
 		mediaType = strings.ToLower(mediaType)
 		major, minor, found := strings.Cut(mediaType, "/")
 		if found && containerAcceptRangeMatches(major, minor, params, contentMajor, contentMinor, contentParams) {
 			mediaTypeSpecificity, parameterSpecificity := containerAcceptSpecificity(major, minor, params)
 			if mediaTypeSpecificity > bestMediaTypeSpecificity ||
 				(mediaTypeSpecificity == bestMediaTypeSpecificity && parameterSpecificity > bestParameterSpecificity) {
 				bestMediaTypeSpecificity = mediaTypeSpecificity
 				bestParameterSpecificity = parameterSpecificity
 				bestQuality = containerAcceptQuality(params)
 			}
 		}
 	}
 	return bestQuality > 0
 }
 func containerManifestCacheCompatible(accept string, manifest *cachedContainerManifest) bool {
 	return manifest.contentType == "" || containerManifestAccepts(accept, manifest.contentType)
 }
 func containerAcceptRangeMatches(major, minor string, params map[string]string, contentMajor, contentMinor string, contentParams map[string]string) bool {
 	if (major != "*" && major != contentMajor) || (minor != "*" && minor != contentMinor) {
 		return false
 	}
 	for key, value := range params {
 		if strings.EqualFold(key, "q") {
 			continue
 		}
 		if contentParams[key] != value {
 			return false
 		}
 	}
 	return true
 }
 func containerAcceptSpecificity(major, minor string, params map[string]string) (int, int) {
 	parameterSpecificity := 0
 	for key := range params {
 		if !strings.EqualFold(key, "q") {
 			parameterSpecificity++
 		}
 	}
 	switch {
 	case major == "*" && minor == "*":
 		return containerAcceptWildcardSpecificity, parameterSpecificity
 	case major == "*" || minor == "*":
 		return containerAcceptTypeWildcardSpecificity, parameterSpecificity
 	default:
 		return containerAcceptExactSpecificity, parameterSpecificity
 	}
 }
 func containerAcceptQuality(params map[string]string) float64 {
 	value, ok := params["q"]
 	if !ok {
 		return 1
 	}
 	quality, err := strconv.ParseFloat(value, 64)
 	if err != nil || quality < 0 || quality > 1 {
 		return 0
 	}
 	return quality
 }
 func copyContainerManifestHeaders(destination, source http.Header) {
 	for _, header := range []string{headerContentType, headerContentLength, "Docker-Content-Digest", headerETag, headerLastModified, "WWW-Authenticate"} {
 		if value := source.Get(header); value != "" {
 			destination.Set(header, value)
 		}
 	}
 }
 func parseHTTPTime(value string) time.Time {
 	parsed, _ := http.ParseTime(value)
 	return parsed
 }
 func shouldServeStaleManifest(status int) bool {
 	return status == http.StatusTooManyRequests || status >= http.StatusInternalServerError
 }
 func sha256Digest(body []byte) string {
 	digest := sha256.Sum256(body)
 	return "sha256:" + hex.EncodeToString(digest[:])
 }
--- a/internal/handler/container_metadata.go
+++ b/internal/handler/container_metadata.go
@ -1,39 +0,0 @@
 package handler
 import (
 	"bytes"
 	"context"
 	"database/sql"
 	"fmt"
 	"time"
 	"github.com/git-pkgs/proxy/internal/database"
 )
 func (h *ContainerHandler) storeContainerMetadata(ctx context.Context, ecosystem, cacheKey string, body []byte, etag, link, contentType, contentDigest string, lastModified, fetchedAt time.Time) (int64, error) {
 	if h.proxy.DB == nil || h.proxy.Storage == nil {
 		return int64(len(body)), nil
 	}
 	storagePath := metadataStoragePath(ecosystem, cacheKey)
 	size, _, err := h.proxy.Storage.Store(ctx, storagePath, bytes.NewReader(body))
 	if err != nil {
 		return 0, fmt.Errorf("storing metadata: %w", err)
 	}
 	err = h.proxy.DB.UpsertMetadataCache(&database.MetadataCacheEntry{
 		Ecosystem:     ecosystem,
 		Name:          cacheKey,
 		StoragePath:   storagePath,
 		ETag:          sql.NullString{String: etag, Valid: etag != ""},
 		Link:          sql.NullString{String: link, Valid: link != ""},
 		ContentType:   sql.NullString{String: contentType, Valid: contentType != ""},
 		ContentDigest: sql.NullString{String: contentDigest, Valid: contentDigest != ""},
 		Size:          sql.NullInt64{Int64: size, Valid: true},
 		LastModified:  sql.NullTime{Time: lastModified, Valid: !lastModified.IsZero()},
 		FetchedAt:     sql.NullTime{Time: fetchedAt, Valid: !fetchedAt.IsZero()},
 	})
 	if err != nil {
 		return 0, err
 	}
 	return size, nil
 }
--- a/internal/handler/container_tags.go
+++ b/internal/handler/container_tags.go
@ -1,229 +0,0 @@
 package handler
 import (
 	"context"
 	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
 	"regexp"
 	"strconv"
 	"strings"
 	"time"
 )
 const containerTagsCacheEcosystem = "oci-tags"
 var containerLinkTargetPattern = regexp.MustCompile(`<([^>]*)>`)
 type cachedContainerTags struct {
 	body        []byte
 	contentType string
 	etag        string
 	link        string
 	size        int64
 	fetchedAt   time.Time
 }
 func (h *ContainerHandler) serveTagsList(w http.ResponseWriter, r *http.Request, registryURL, name string) {
 	cacheKey := h.containerTagsCacheKey(registryURL, name, r.URL.Query())
 	cached, err := h.loadContainerTags(r.Context(), cacheKey)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to read cached container tag list", "error", err)
 		cached = nil
 	}
 	if cached != nil && h.containerTagsFresh(cached) {
 		writeContainerTags(w, cached, false)
 		return
 	}
 	upstreamURL := fmt.Sprintf("%s/v2/%s/tags/list", registryURL, name)
 	if query := r.URL.Query().Encode(); query != "" {
 		upstreamURL += "?" + query
 	}
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		h.containerError(w, http.StatusInternalServerError, "INTERNAL_ERROR", "failed to create request")
 		return
 	}
 	req.Header.Set("Accept", "application/json")
 	if cached != nil && cached.etag != "" {
 		req.Header.Set("If-None-Match", cached.etag)
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		h.serveStaleTagsOrError(w, cached, err)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode == http.StatusNotModified && cached != nil {
 		cached.fetchedAt = time.Now()
 		if err := h.storeContainerTags(r.Context(), cacheKey, cached); err != nil {
 			h.proxy.Logger.Warn("failed to refresh cached container tag list", "error", err)
 		}
 		writeContainerTags(w, cached, false)
 		return
 	}
 	if resp.StatusCode != http.StatusOK {
 		if cached != nil && shouldServeStaleManifest(resp.StatusCode) {
 			writeContainerTags(w, cached, true)
 			return
 		}
 		copyContainerTagsHeaders(w.Header(), resp.Header)
 		w.WriteHeader(resp.StatusCode)
 		_, _ = io.Copy(w, resp.Body)
 		return
 	}
 	body, err := h.proxy.ReadMetadata(resp.Body)
 	if err != nil {
 		h.serveStaleTagsOrError(w, cached, fmt.Errorf("reading tag list: %w", err))
 		return
 	}
 	tags := &cachedContainerTags{
 		body:        body,
 		contentType: resp.Header.Get(headerContentType),
 		etag:        resp.Header.Get(headerETag),
 		link:        h.rewriteContainerTagsLink(strings.Join(resp.Header.Values("Link"), ", "), registryURL, r.URL.Path),
 		size:        int64(len(body)),
 		fetchedAt:   time.Now(),
 	}
 	if tags.contentType == "" {
 		tags.contentType = contentTypeJSON
 	}
 	if err := h.storeContainerTags(r.Context(), cacheKey, tags); err != nil {
 		h.proxy.Logger.Warn("failed to cache container tag list", "error", err)
 	}
 	writeContainerTags(w, tags, false)
 }
 func (h *ContainerHandler) serveStaleTagsOrError(w http.ResponseWriter, cached *cachedContainerTags, err error) {
 	if cached != nil {
 		h.proxy.Logger.Warn("upstream tag list fetch failed, serving stale cache", "error", err)
 		writeContainerTags(w, cached, true)
 		return
 	}
 	h.proxy.Logger.Error("failed to fetch container tag list", "error", err)
 	h.containerError(w, http.StatusBadGateway, "INTERNAL_ERROR", "failed to fetch from upstream")
 }
 func (h *ContainerHandler) containerTagsCacheKey(registryURL, name string, query url.Values) string {
 	identity := registryURL + "\x00" + name + "\x00" + query.Encode()
 	sum := sha256.Sum256([]byte(identity))
 	return hex.EncodeToString(sum[:])
 }
 func (h *ContainerHandler) containerTagsFresh(tags *cachedContainerTags) bool {
 	return h.proxy.MetadataTTL > 0 && !tags.fetchedAt.IsZero() && time.Since(tags.fetchedAt) < h.proxy.MetadataTTL
 }
 func (h *ContainerHandler) loadContainerTags(ctx context.Context, cacheKey string) (*cachedContainerTags, error) {
 	if h.proxy.DB == nil || h.proxy.Storage == nil {
 		return nil, nil
 	}
 	entry, err := h.proxy.DB.GetMetadataCache(containerTagsCacheEcosystem, cacheKey)
 	if err != nil || entry == nil {
 		return nil, err
 	}
 	reader, err := h.proxy.Storage.Open(ctx, entry.StoragePath)
 	if err != nil {
 		return nil, nil
 	}
 	defer func() { _ = reader.Close() }()
 	body, err := h.proxy.ReadMetadata(reader)
 	if err != nil {
 		return nil, err
 	}
 	tags := &cachedContainerTags{body: body, contentType: contentTypeJSON, size: int64(len(body))}
 	if entry.ContentType.Valid {
 		tags.contentType = entry.ContentType.String
 	}
 	if entry.ETag.Valid {
 		tags.etag = entry.ETag.String
 	}
 	if entry.Link.Valid {
 		tags.link = entry.Link.String
 	}
 	if entry.Size.Valid {
 		tags.size = entry.Size.Int64
 	}
 	if entry.FetchedAt.Valid {
 		tags.fetchedAt = entry.FetchedAt.Time
 	}
 	return tags, nil
 }
 func (h *ContainerHandler) storeContainerTags(ctx context.Context, cacheKey string, tags *cachedContainerTags) error {
 	size, err := h.storeContainerMetadata(ctx, containerTagsCacheEcosystem, cacheKey, tags.body,
 		tags.etag, tags.link, tags.contentType, "", time.Time{}, tags.fetchedAt)
 	if err != nil {
 		return fmt.Errorf("storing tag list: %w", err)
 	}
 	tags.size = size
 	return nil
 }
 func writeContainerTags(w http.ResponseWriter, tags *cachedContainerTags, stale bool) {
 	w.Header().Set(headerContentType, tags.contentType)
 	w.Header().Set(headerContentLength, strconv.FormatInt(tags.size, 10))
 	if tags.etag != "" {
 		w.Header().Set(headerETag, tags.etag)
 	}
 	if tags.link != "" {
 		w.Header().Set("Link", tags.link)
 	}
 	if stale {
 		w.Header().Set("Warning", containerStaleWarning)
 	}
 	w.WriteHeader(http.StatusOK)
 	_, _ = w.Write(tags.body)
 }
 func copyContainerTagsHeaders(destination, source http.Header) {
 	for _, header := range []string{headerContentType, headerContentLength, headerETag, "Link", "WWW-Authenticate"} {
 		if value := source.Get(header); value != "" {
 			destination.Set(header, value)
 		}
 	}
 }
 func (h *ContainerHandler) rewriteContainerTagsLink(link, registryURL, requestPath string) string {
 	if link == "" {
 		return ""
 	}
 	upstreamURL, err := url.Parse(registryURL)
 	if err != nil {
 		return link
 	}
 	proxyURL, err := url.Parse(h.proxyURL)
 	if err != nil {
 		return link
 	}
 	return containerLinkTargetPattern.ReplaceAllStringFunc(link, func(target string) string {
 		linkURL, err := url.Parse(target[1 : len(target)-1])
 		if err != nil {
 			return target
 		}
 		if linkURL.IsAbs() {
 			if linkURL.Scheme != upstreamURL.Scheme || linkURL.Host != upstreamURL.Host {
 				return target
 			}
 		} else if linkURL.Host != "" || (linkURL.Path != "" && !strings.HasPrefix(linkURL.Path, "/v2/")) {
 			return target
 		}
 		// Relative registry API links resolve against the current tag-list
 		// endpoint. Rebuild them below so named-registry selectors are kept.
 		linkURL.Scheme = proxyURL.Scheme
 		linkURL.Host = proxyURL.Host
 		linkURL.User = proxyURL.User
 		linkURL.Path = strings.TrimSuffix(proxyURL.Path, "/") + "/v2" + requestPath
 		linkURL.RawPath = ""
 		return "<" + linkURL.String() + ">"
 	})
 }
--- a/internal/handler/container_test.go
+++ b/internal/handler/container_test.go
--- a/internal/handler/cran.go
+++ b/internal/handler/cran.go
@ -1,6 +1,7 @@
 package handler
 import (
 	"io"
 	"net/http"
 	"strings"
 )
@ -25,26 +26,19 @@ func NewCRANHandler(proxy *Proxy, proxyURL string) *CRANHandler {
 	}
 }
 // NewCRANHandlerWithUpstream creates a CRAN handler with a custom upstream.
 func NewCRANHandlerWithUpstream(proxy *Proxy, proxyURL, upstreamURL string) *CRANHandler {
 	h := NewCRANHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, cranUpstream)
 	return h
 }
 // Routes returns the HTTP handler for CRAN requests.
 func (h *CRANHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
 	// Package indexes
-	mux.HandleFunc("GET /src/contrib/PACKAGES", h.proxyCached)
+	mux.HandleFunc("GET /src/contrib/PACKAGES", h.proxyUpstream)
-	mux.HandleFunc("GET /src/contrib/PACKAGES.gz", h.proxyCached)
+	mux.HandleFunc("GET /src/contrib/PACKAGES.gz", h.proxyUpstream)
-	mux.HandleFunc("GET /src/contrib/PACKAGES.rds", h.proxyCached)
+	mux.HandleFunc("GET /src/contrib/PACKAGES.rds", h.proxyUpstream)
 	// Binary package indexes
-	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES", h.proxyCached)
+	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES", h.proxyUpstream)
-	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES.gz", h.proxyCached)
+	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES.gz", h.proxyUpstream)
-	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES.rds", h.proxyCached)
+	mux.HandleFunc("GET /bin/{platform}/contrib/{rversion}/PACKAGES.rds", h.proxyUpstream)
 	// Source package downloads
 	mux.HandleFunc("GET /src/contrib/{filename}", h.handleSourceDownload)
@ -79,7 +73,8 @@ func (h *CRANHandler) handleSourceDownload(w http.ResponseWriter, r *http.Reques
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "cran", name, version, filename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
@ -113,7 +108,8 @@ func (h *CRANHandler) handleBinaryDownload(w http.ResponseWriter, r *http.Reques
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "cran", name, storageVersion, filename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
@ -155,14 +151,36 @@ func (h *CRANHandler) isBinaryPackage(filename string) bool {
 	return strings.HasSuffix(filename, ".zip") || strings.HasSuffix(filename, ".tgz")
 }
 // proxyCached forwards a metadata request with caching.
 func (h *CRANHandler) proxyCached(w http.ResponseWriter, r *http.Request) {
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	cacheKey = strings.ReplaceAll(cacheKey, "/", "_")
 	h.proxy.ProxyCached(w, r, h.upstreamURL+r.URL.Path, "cran", cacheKey, "*/*")
 }
 // proxyUpstream forwards a request to CRAN without caching.
 func (h *CRANHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
-	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, []string{headerAcceptEncoding})
+	upstreamURL := h.upstreamURL + r.URL.Path
 	h.proxy.Logger.Debug("proxying to upstream", "url", upstreamURL)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	if ae := r.Header.Get("Accept-Encoding"); ae != "" {
 		req.Header.Set("Accept-Encoding", ae)
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	for k, vv := range resp.Header {
 		for _, v := range vv {
 			w.Header().Add(k, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
--- a/internal/handler/debian.go
+++ b/internal/handler/debian.go
@ -2,6 +2,7 @@ package handler
 import (
 	"fmt"
 	"io"
 	"net/http"
 	"regexp"
 	"strings"
@ -9,7 +10,6 @@ import (
 const (
 	debianUpstream = "http://deb.debian.org/debian"
 	debMatchCount  = 4 // full match + name + version + arch
 )
 // DebianHandler handles APT/Debian repository protocol requests.
@ -21,13 +21,10 @@ type DebianHandler struct {
 }
 // NewDebianHandler creates a new Debian/APT protocol handler.
-func NewDebianHandler(proxy *Proxy, proxyURL string, upstreamURL string) *DebianHandler {
+func NewDebianHandler(proxy *Proxy, proxyURL string) *DebianHandler {
 	if upstreamURL == "" {
 		upstreamURL = debianUpstream
 	}
 	return &DebianHandler{
 		proxy:       proxy,
-		upstreamURL: strings.TrimSuffix(upstreamURL, "/"),
+		upstreamURL: debianUpstream,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 }
@ -43,11 +40,6 @@ func (h *DebianHandler) Routes() http.Handler {
 		path := strings.TrimPrefix(r.URL.Path, "/")
 		if containsPathTraversal(path) {
 			http.Error(w, "invalid path", http.StatusBadRequest)
 			return
 		}
 		// Route based on path type
 		switch {
 		case strings.HasPrefix(path, "pool/"):
@ -84,24 +76,79 @@ func (h *DebianHandler) handlePackageDownload(w http.ResponseWriter, r *http.Req
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), "deb", name, version, filename, downloadURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to get debian package", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
-	w.Header().Set(headerContentType, "application/vnd.debian.binary-package")
+	w.Header().Set("Content-Type", "application/vnd.debian.binary-package")
 	ServeArtifact(w, result)
 }
 // handleMetadata proxies repository metadata files.
 // These change frequently so we don't cache them.
 func (h *DebianHandler) handleMetadata(w http.ResponseWriter, r *http.Request, path string) {
-	cacheKey := strings.ReplaceAll(path, "/", "_")
+	upstreamURL := fmt.Sprintf("%s/%s", h.upstreamURL, path)
-	h.proxy.ProxyCached(w, r, fmt.Sprintf("%s/%s", h.upstreamURL, path), "debian", cacheKey, "*/*")
+
 	h.proxy.Logger.Debug("debian metadata request", "path", path)
 	req, err := http.NewRequestWithContext(r.Context(), r.Method, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	// Forward relevant headers
 	for _, header := range []string{"Accept", "Accept-Encoding", "If-Modified-Since", "If-None-Match"} {
 		if v := r.Header.Get(header); v != "" {
 			req.Header.Set(header, v)
 		}
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("failed to fetch upstream metadata", "error", err)
 		http.Error(w, "failed to fetch from upstream", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	// Copy response headers
 	for _, header := range []string{"Content-Type", "Content-Length", "Last-Modified", "ETag"} {
 		if v := resp.Header.Get(header); v != "" {
 			w.Header().Set(header, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
 // proxyFile proxies any file directly without caching.
 func (h *DebianHandler) proxyFile(w http.ResponseWriter, r *http.Request, path string) {
-	h.proxy.ProxyFile(w, r, fmt.Sprintf("%s/%s", h.upstreamURL, path))
+	upstreamURL := fmt.Sprintf("%s/%s", h.upstreamURL, path)
 	req, err := http.NewRequestWithContext(r.Context(), r.Method, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		http.Error(w, "failed to fetch from upstream", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	for key, values := range resp.Header {
 		for _, v := range values {
 			w.Header().Add(key, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
 // debPackagePattern matches .deb filenames to extract name, version, and arch.
@ -120,7 +167,7 @@ func (h *DebianHandler) parsePoolPath(path string) (name, version, arch string)
 	// Parse the filename
 	matches := debPackagePattern.FindStringSubmatch(filename)
-	if len(matches) != debMatchCount {
+	if len(matches) != 4 {
 		return "", "", ""
 	}
--- a/internal/handler/debian_test.go
+++ b/internal/handler/debian_test.go
@ -1,28 +1,89 @@
 package handler
 import (
 	"net/http"
 	"net/http/httptest"
 	"testing"
 )
 func TestDebianHandler_parsePoolPath(t *testing.T) {
 	h := &DebianHandler{}
-	assertPathParser(t, "parsePoolPath", h.parsePoolPath, []pathParseCase{
+	tests := []struct {
-		{"pool/main/n/nginx/nginx_1.18.0-6_amd64.deb", "nginx", "1.18.0-6", "amd64"},
+		path        string
-		{"pool/main/libn/libncurses/libncurses6_6.2-1_amd64.deb", "libncurses6", "6.2-1", "amd64"},
+		wantName    string
-		{"pool/contrib/v/virtualbox/virtualbox_6.1.38-1_amd64.deb", "virtualbox", "6.1.38-1", "amd64"},
+		wantVersion string
-		{"pool/main/g/git/git_2.39.2-1_arm64.deb", "git", "2.39.2-1", "arm64"},
+		wantArch    string
 	}{
 		{
-			"pool/universe/n/nmap/nmap_7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1_amd64.deb",
+			path:        "pool/main/n/nginx/nginx_1.18.0-6_amd64.deb",
-			"nmap", "7.91+dfsg1+really7.80+dfsg1-2ubuntu0.1", "amd64",
+			wantName:    "nginx",
 			wantVersion: "1.18.0-6",
 			wantArch:    "amd64",
 		},
-		{"pool/main/o/openssl/openssl_3.0.2-0ubuntu1.15~build1_amd64.deb", "openssl", "3.0.2-0ubuntu1.15~build1", "amd64"},
+		{
-		{"invalid/path", "", "", ""},
+			path:        "pool/main/libn/libncurses/libncurses6_6.2-1_amd64.deb",
-		{"pool/main/n/nginx/nginx.deb", "", "", ""},
+			wantName:    "libncurses6",
-	})
+			wantVersion: "6.2-1",
 			wantArch:    "amd64",
 		},
 		{
 			path:        "pool/contrib/v/virtualbox/virtualbox_6.1.38-1_amd64.deb",
 			wantName:    "virtualbox",
 			wantVersion: "6.1.38-1",
 			wantArch:    "amd64",
 		},
 		{
 			path:        "pool/main/g/git/git_2.39.2-1_arm64.deb",
 			wantName:    "git",
 			wantVersion: "2.39.2-1",
 			wantArch:    "arm64",
 		},
 		{
 			path:        "invalid/path",
 			wantName:    "",
 			wantVersion: "",
 			wantArch:    "",
 		},
 		{
 			path:        "pool/main/n/nginx/nginx.deb",
 			wantName:    "",
 			wantVersion: "",
 			wantArch:    "",
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.path, func(t *testing.T) {
 			name, version, arch := h.parsePoolPath(tt.path)
 			if name != tt.wantName {
 				t.Errorf("parsePoolPath() name = %q, want %q", name, tt.wantName)
 			}
 			if version != tt.wantVersion {
 				t.Errorf("parsePoolPath() version = %q, want %q", version, tt.wantVersion)
 			}
 			if arch != tt.wantArch {
 				t.Errorf("parsePoolPath() arch = %q, want %q", arch, tt.wantArch)
 			}
 		})
 	}
 }
 func TestDebianHandler_Routes(t *testing.T) {
-	h := NewDebianHandler(nil, "http://localhost:8080", "")
+	h := NewDebianHandler(nil, "http://localhost:8080")
-	assertRoutesBasics(t, h.Routes(), "/dists/stable/Release", "/pool/../../../etc/passwd")
+
 	// Test that handler doesn't panic on initialization
 	handler := h.Routes()
 	if handler == nil {
 		t.Fatal("Routes() returned nil")
 	}
 	// Test method not allowed
 	req := httptest.NewRequest(http.MethodPost, "/dists/stable/Release", nil)
 	w := httptest.NewRecorder()
 	handler.ServeHTTP(w, req)
 	if w.Code != http.StatusMethodNotAllowed {
 		t.Errorf("POST request: got status %d, want %d", w.Code, http.StatusMethodNotAllowed)
 	}
 }
--- a/internal/handler/download_test.go
+++ b/internal/handler/download_test.go
--- a/internal/handler/filename_download.go
+++ b/internal/handler/filename_download.go
@ -1,43 +0,0 @@
 package handler
 import (
 	"net/http"
 	"strings"
 )
 type filenameDownload struct {
 	ecosystem   string
 	upstreamURL string
 	suffix      string
 	parseErr    string
 	fetchErr    string
 	parse       func(string) (name, version string)
 }
 func (p *Proxy) handleFilenameDownload(w http.ResponseWriter, r *http.Request, d filenameDownload) {
 	filename := r.PathValue("filename")
 	if filename == "" || !strings.HasSuffix(filename, d.suffix) {
 		http.Error(w, "invalid filename", http.StatusBadRequest)
 		return
 	}
 	name, version := d.parse(filename)
 	if name == "" || version == "" {
 		http.Error(w, d.parseErr, http.StatusBadRequest)
 		return
 	}
 	p.Logger.Info(d.ecosystem+" download request",
 		"name", name, "version", version, "filename", filename)
 	downloadURL := d.upstreamURL + r.URL.Path
 	result, err := p.GetOrFetchArtifactFromURL(
 		r.Context(), d.ecosystem, name, version, filename, downloadURL,
 	)
 	if err != nil {
 		p.serveArtifactError(w, err, d.fetchErr)
 		return
 	}
 	ServeArtifact(w, result)
 }
--- a/internal/handler/gem.go
+++ b/internal/handler/gem.go
@ -1,13 +1,10 @@
 package handler
 import (
 	"bufio"
 	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
 	"strings"
 	"time"
 )
 const (
@ -30,13 +27,6 @@ func NewGemHandler(proxy *Proxy, proxyURL string) *GemHandler {
 	}
 }
 // NewGemHandlerWithUpstream creates a RubyGems handler with a custom upstream.
 func NewGemHandlerWithUpstream(proxy *Proxy, proxyURL, upstreamURL string) *GemHandler {
 	h := NewGemHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, gemUpstream)
 	return h
 }
 // Routes returns the HTTP handler for RubyGems requests.
 func (h *GemHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
@ -45,13 +35,13 @@ func (h *GemHandler) Routes() http.Handler {
 	mux.HandleFunc("GET /gems/{filename}", h.handleDownload)
 	// Specs indexes (compressed Ruby Marshal format)
-	mux.HandleFunc("GET /specs.4.8.gz", h.proxyCached)
+	mux.HandleFunc("GET /specs.4.8.gz", h.proxyUpstream)
-	mux.HandleFunc("GET /latest_specs.4.8.gz", h.proxyCached)
+	mux.HandleFunc("GET /latest_specs.4.8.gz", h.proxyUpstream)
-	mux.HandleFunc("GET /prerelease_specs.4.8.gz", h.proxyCached)
+	mux.HandleFunc("GET /prerelease_specs.4.8.gz", h.proxyUpstream)
 	// Compact index (bundler 2.x+)
-	mux.HandleFunc("GET /versions", h.proxyCached)
+	mux.HandleFunc("GET /versions", h.proxyUpstream)
-	mux.HandleFunc("GET /info/{name}", h.handleCompactIndex)
+	mux.HandleFunc("GET /info/{name}", h.proxyUpstream)
 	// Quick index
 	mux.HandleFunc("GET /quick/Marshal.4.8/{filename}", h.proxyUpstream)
@ -65,14 +55,30 @@ func (h *GemHandler) Routes() http.Handler {
 // handleDownload serves a gem file, fetching and caching from upstream if needed.
 func (h *GemHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
-	h.proxy.handleFilenameDownload(w, r, filenameDownload{
+	filename := r.PathValue("filename")
-		ecosystem:   "gem",
+	if filename == "" || !strings.HasSuffix(filename, ".gem") {
-		upstreamURL: h.upstreamURL,
+		http.Error(w, "invalid filename", http.StatusBadRequest)
-		suffix:      ".gem",
+		return
-		parseErr:    "could not parse gem filename",
+	}
-		fetchErr:    "failed to fetch gem",
+
-		parse:       h.parseGemFilename,
+	// Extract name and version from filename (e.g., "rails-7.1.0.gem")
-	})
+	name, version := h.parseGemFilename(filename)
 	if name == "" || version == "" {
 		http.Error(w, "could not parse gem filename", http.StatusBadRequest)
 		return
 	}
 	h.proxy.Logger.Info("gem download request",
 		"name", name, "version", version, "filename", filename)
 	result, err := h.proxy.GetOrFetchArtifact(r.Context(), "gem", name, version, filename)
 	if err != nil {
 		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch gem", http.StatusBadGateway)
 		return
 	}
 	ServeArtifact(w, result)
 }
 // parseGemFilename extracts name and version from a gem filename.
@ -92,198 +98,6 @@ func (h *GemHandler) parseGemFilename(filename string) (name, version string) {
 	return "", ""
 }
 // handleCompactIndex serves the compact index for a gem, filtering versions
 // based on cooldown when enabled.
 func (h *GemHandler) handleCompactIndex(w http.ResponseWriter, r *http.Request) {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		h.proxyCached(w, r)
 		return
 	}
 	name := r.PathValue("name")
 	if name == "" {
 		http.Error(w, "invalid gem name", http.StatusBadRequest)
 		return
 	}
 	h.proxy.Logger.Info("gem compact index request with cooldown", "name", name)
 	indexResp, filteredVersions, err := h.fetchIndexAndVersions(r, name)
 	if err != nil {
 		h.proxy.Logger.Error("upstream compact index request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = indexResp.Body.Close() }()
 	if indexResp.StatusCode != http.StatusOK {
 		copyResponseHeaders(w, indexResp.Header)
 		w.WriteHeader(indexResp.StatusCode)
 		_, _ = io.Copy(w, indexResp.Body)
 		return
 	}
 	if filteredVersions == nil {
 		h.proxy.Logger.Warn("failed to fetch version timestamps, proxying unfiltered", "name", name)
 		copyResponseHeaders(w, indexResp.Header)
 		w.WriteHeader(http.StatusOK)
 		_, _ = io.Copy(w, indexResp.Body)
 		return
 	}
 	h.writeFilteredIndex(w, indexResp, name, filteredVersions)
 }
 // fetchIndexAndVersions fetches the compact index and versions API concurrently.
 // Returns the index response, a set of versions to filter (nil if versions API failed),
 // and an error if the index fetch itself failed.
 func (h *GemHandler) fetchIndexAndVersions(r *http.Request, name string) (*http.Response, map[string]bool, error) {
 	type versionsResult struct {
 		filtered map[string]bool
 		err      error
 	}
 	versionsCh := make(chan versionsResult, 1)
 	go func() {
 		filtered, err := h.fetchFilteredVersions(r, name)
 		versionsCh <- versionsResult{filtered: filtered, err: err}
 	}()
 	indexResp, err := h.fetchCompactIndex(r, name)
 	versionsRes := <-versionsCh
 	if err != nil {
 		return nil, nil, err
 	}
 	if versionsRes.err != nil {
 		return indexResp, nil, nil
 	}
 	return indexResp, versionsRes.filtered, nil
 }
 // fetchCompactIndex fetches the compact index from upstream.
 func (h *GemHandler) fetchCompactIndex(r *http.Request, name string) (*http.Response, error) {
 	indexURL := h.upstreamURL + "/info/" + name
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, indexURL, nil)
 	if err != nil {
 		return nil, err
 	}
 	for _, hdr := range []string{"Accept", headerAcceptEncoding, "If-None-Match", "If-Modified-Since"} {
 		if v := r.Header.Get(hdr); v != "" {
 			req.Header.Set(hdr, v)
 		}
 	}
 	return h.proxy.HTTPClient.Do(req)
 }
 // writeFilteredIndex writes the compact index response with cooldown-filtered versions removed.
 func (h *GemHandler) writeFilteredIndex(w http.ResponseWriter, resp *http.Response, name string, filtered map[string]bool) {
 	for k, vv := range resp.Header {
 		if strings.EqualFold(k, headerContentLength) {
 			continue // length will change after filtering
 		}
 		for _, v := range vv {
 			w.Header().Add(k, v)
 		}
 	}
 	w.WriteHeader(http.StatusOK)
 	scanner := bufio.NewScanner(resp.Body)
 	for scanner.Scan() {
 		line := scanner.Text()
 		if line == "---" {
 			_, _ = fmt.Fprintln(w, line)
 			continue
 		}
 		version := line
 		if spaceIdx := strings.IndexByte(line, ' '); spaceIdx > 0 {
 			version = line[:spaceIdx]
 		}
 		if filtered[version] {
 			h.proxy.Logger.Info("cooldown: filtering gem version",
 				"gem", name, "version", version)
 			continue
 		}
 		_, _ = fmt.Fprintln(w, line)
 	}
 }
 // copyResponseHeaders copies HTTP headers from a response to a writer.
 func copyResponseHeaders(w http.ResponseWriter, headers http.Header) {
 	for k, vv := range headers {
 		for _, v := range vv {
 			w.Header().Add(k, v)
 		}
 	}
 }
 // gemVersion represents a version entry from the RubyGems versions API.
 type gemVersion struct {
 	Number    string `json:"number"`
 	Platform  string `json:"platform"`
 	CreatedAt string `json:"created_at"`
 }
 // fetchFilteredVersions fetches the versions API and returns a set of version
 // strings that should be filtered out by cooldown.
 func (h *GemHandler) fetchFilteredVersions(r *http.Request, name string) (map[string]bool, error) {
 	versionsURL := fmt.Sprintf("%s/api/v1/versions/%s.json", h.upstreamURL, name)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, versionsURL, nil)
 	if err != nil {
 		return nil, err
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		return nil, err
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("versions API returned %d", resp.StatusCode)
 	}
 	var versions []gemVersion
 	if err := json.NewDecoder(resp.Body).Decode(&versions); err != nil {
 		return nil, err
 	}
 	packagePURL := canonicalPackagePURL("gem", name)
 	filtered := make(map[string]bool)
 	for _, v := range versions {
 		createdAt, err := time.Parse(time.RFC3339, v.CreatedAt)
 		if err != nil {
 			continue
 		}
 		if !h.proxy.Cooldown.IsAllowed("gem", packagePURL, createdAt) {
 			// Build version string matching compact index format
 			versionStr := v.Number
 			if v.Platform != "" && v.Platform != "ruby" {
 				versionStr = v.Number + "-" + v.Platform
 			}
 			filtered[versionStr] = true
 		}
 	}
 	return filtered, nil
 }
 // proxyCached forwards a metadata request with caching.
 func (h *GemHandler) proxyCached(w http.ResponseWriter, r *http.Request) {
 	upstreamURL := h.upstreamURL + r.URL.Path
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	h.proxy.ProxyCached(w, r, upstreamURL, "gem", cacheKey, "*/*")
 }
 // proxyUpstream forwards a request to rubygems.org without caching.
 func (h *GemHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	upstreamURL := h.upstreamURL + r.URL.Path
@ -300,13 +114,13 @@ func (h *GemHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	}
 	// Copy relevant headers
-	for _, h := range []string{"Accept", headerAcceptEncoding, "If-None-Match", "If-Modified-Since"} {
+	for _, h := range []string{"Accept", "Accept-Encoding", "If-None-Match", "If-Modified-Since"} {
 		if v := r.Header.Get(h); v != "" {
 			req.Header.Set(h, v)
 		}
 	}
-	resp, err := h.proxy.HTTPClient.Do(req)
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
--- a/internal/handler/gem_test.go
+++ b/internal/handler/gem_test.go
@ -1,16 +1,8 @@
 package handler
 import (
 	"encoding/json"
 	"fmt"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 )
 func TestGemParseFilename(t *testing.T) {
@ -36,217 +28,3 @@ func TestGemParseFilename(t *testing.T) {
 		}
 	}
 }
 func TestGemCompactIndexCooldown(t *testing.T) {
 	now := time.Now()
 	oldTime := now.Add(-7 * 24 * time.Hour).Format(time.RFC3339)
 	recentTime := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	compactIndex := "---\n1.0.0 dep1:>= 1.0|checksum:abc123\n2.0.0 dep1:>= 1.0|checksum:def456\n"
 	versionsJSON, _ := json.Marshal([]gemVersion{
 		{Number: "1.0.0", Platform: "ruby", CreatedAt: oldTime},
 		{Number: "2.0.0", Platform: "ruby", CreatedAt: recentTime},
 	})
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch {
 		case strings.HasPrefix(r.URL.Path, "/info/"):
 			w.Header().Set("Content-Type", "text/plain")
 			_, _ = w.Write([]byte(compactIndex))
 		case strings.HasPrefix(r.URL.Path, "/api/v1/versions/"):
 			w.Header().Set("Content-Type", "application/json")
 			_, _ = w.Write(versionsJSON)
 		default:
 			w.WriteHeader(http.StatusNotFound)
 		}
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &GemHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/info/testgem", nil)
 	req.SetPathValue("name", "testgem")
 	w := httptest.NewRecorder()
 	h.handleCompactIndex(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	body := w.Body.String()
 	if !strings.Contains(body, "1.0.0") {
 		t.Error("expected version 1.0.0 to survive filtering")
 	}
 	if strings.Contains(body, "2.0.0") {
 		t.Error("expected version 2.0.0 to be filtered out")
 	}
 	if !strings.HasPrefix(body, "---\n") {
 		t.Error("expected compact index header to be preserved")
 	}
 }
 func TestGemCompactIndexCooldownWithPlatformVersion(t *testing.T) {
 	now := time.Now()
 	recentTime := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	compactIndex := "---\n1.0.0 dep:>= 1.0|checksum:abc\n1.0.0-java dep:>= 1.0|checksum:def\n"
 	versionsJSON, _ := json.Marshal([]gemVersion{
 		{Number: "1.0.0", Platform: "ruby", CreatedAt: recentTime},
 		{Number: "1.0.0", Platform: "java", CreatedAt: recentTime},
 	})
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch {
 		case strings.HasPrefix(r.URL.Path, "/info/"):
 			_, _ = w.Write([]byte(compactIndex))
 		case strings.HasPrefix(r.URL.Path, "/api/v1/versions/"):
 			_, _ = w.Write(versionsJSON)
 		}
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &GemHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/info/testgem", nil)
 	req.SetPathValue("name", "testgem")
 	w := httptest.NewRecorder()
 	h.handleCompactIndex(w, req)
 	body := w.Body.String()
 	// Both ruby and java platform versions should be filtered
 	lines := strings.Split(strings.TrimSpace(body), "\n")
 	if len(lines) != 1 { // only "---"
 		t.Errorf("expected only header line, got %d lines: %v", len(lines), lines)
 	}
 }
 func TestGemCompactIndexNoCooldown(t *testing.T) {
 	compactIndex := "---\n1.0.0 dep:>= 1.0|checksum:abc\n"
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, _ = w.Write([]byte(compactIndex))
 	}))
 	defer upstream.Close()
 	h := &GemHandler{
 		proxy:       testProxy(), // no cooldown
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/info/testgem", nil)
 	req.SetPathValue("name", "testgem")
 	w := httptest.NewRecorder()
 	h.handleCompactIndex(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
 func TestGemCompactIndexVersionsAPIFails(t *testing.T) {
 	compactIndex := "---\n1.0.0 dep:>= 1.0|checksum:abc\n"
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch {
 		case strings.HasPrefix(r.URL.Path, "/info/"):
 			_, _ = w.Write([]byte(compactIndex))
 		case strings.HasPrefix(r.URL.Path, "/api/v1/versions/"):
 			w.WriteHeader(http.StatusInternalServerError)
 		}
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &GemHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/info/testgem", nil)
 	req.SetPathValue("name", "testgem")
 	w := httptest.NewRecorder()
 	h.handleCompactIndex(w, req)
 	// Should still return OK with unfiltered content
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 	body := w.Body.String()
 	if !strings.Contains(body, "1.0.0") {
 		t.Error("expected unfiltered content when versions API fails")
 	}
 }
 func TestGemFetchFilteredVersions(t *testing.T) {
 	now := time.Now()
 	oldTime := now.Add(-7 * 24 * time.Hour).Format(time.RFC3339)
 	recentTime := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	versionsJSON, _ := json.Marshal([]gemVersion{
 		{Number: "1.0.0", Platform: "ruby", CreatedAt: oldTime},
 		{Number: "2.0.0", Platform: "ruby", CreatedAt: recentTime},
 		{Number: "2.0.0", Platform: "java", CreatedAt: recentTime},
 	})
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write(versionsJSON)
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	h := &GemHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/info/testgem", nil)
 	filtered, err := h.fetchFilteredVersions(req, "testgem")
 	if err != nil {
 		t.Fatal(err)
 	}
 	if filtered["1.0.0"] {
 		t.Error("version 1.0.0 should not be filtered (old enough)")
 	}
 	if !filtered["2.0.0"] {
 		t.Error("version 2.0.0 (ruby) should be filtered")
 	}
 	if !filtered["2.0.0-java"] {
 		t.Error("version 2.0.0-java should be filtered")
 	}
 	_ = fmt.Sprintf // silence unused import
 }
--- a/internal/handler/generic.go
+++ b/internal/handler/generic.go
@ -1,160 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"net/http"
 	"regexp"
 	"strings"
 )
 const (
 	genericEcosystem = "generic"
 	// genericAcceptAny is always sent for metadata so every client shares the
 	// same cached representation, regardless of its Accept header.
 	genericAcceptAny = "*/*"
 	// githubReleaseAssetMatchCount is the full match plus owner, repository,
 	// tag and asset filename.
 	githubReleaseAssetMatchCount = 5
 )
 // githubReleaseAssetPattern matches the path of a GitHub release asset
 // download, {owner}/{repo}/releases/download/{tag}/{asset}. A tag pins the
 // asset to one release, so these downloads are cached in the artifact cache
 // and served without revalidation once fetched.
 var githubReleaseAssetPattern = regexp.MustCompile(`^([^/]+)/([^/]+)/releases/download/([^/]+)/([^/]+)$`)
 // GenericHandler proxies plain HTTP downloads from configured upstream base
 // URLs. Each configured upstream is mounted at /generic/{name}/ and the
 // remaining request path (and query string) is appended to the upstream URL.
 //
 // Only configured upstreams are reachable, so the proxy is not an open HTTP
 // proxy. The handler is the caching layer behind tools that download from
 // fixed URL shapes, such as mise's aqua backend fetching GitHub release
 // assets, and is pointed at by URL-rewriting settings on the client.
 //
 // Release-asset paths ({owner}/{repo}/releases/download/{tag}/{asset}) are
 // version-pinned and cached in the shared artifact cache, so they keep being
 // served when the upstream is unreachable. Every other path is served through
 // the metadata cache: fresh within the metadata TTL, revalidated with the
 // upstream's validators after that, and served stale when the upstream fails
 // or refuses the request. That covers API responses such as
 // api.github.com/repos/{owner}/{repo}/releases/tags/{tag}.
 type GenericHandler struct {
 	proxy        *Proxy
 	repositories map[string]string
 }
 // NewGenericHandler creates a generic HTTP download proxy handler.
 func NewGenericHandler(proxy *Proxy, repositories map[string]string) *GenericHandler {
 	h := &GenericHandler{
 		proxy:        proxy,
 		repositories: make(map[string]string, len(repositories)),
 	}
 	for name, upstreamURL := range repositories {
 		h.repositories[name] = strings.TrimSuffix(upstreamURL, "/")
 	}
 	return h
 }
 // Routes returns the HTTP handler for generic download requests.
 // Mount this at /generic on your router.
 func (h *GenericHandler) Routes() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet && r.Method != http.MethodHead {
 			http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
 			return
 		}
 		path := strings.TrimPrefix(r.URL.Path, "/")
 		if containsPathTraversal(path) {
 			http.Error(w, "invalid path", http.StatusBadRequest)
 			return
 		}
 		repository, rest, ok := strings.Cut(path, "/")
 		upstreamURL, found := h.repositories[repository]
 		if !ok || rest == "" || !found {
 			http.NotFound(w, r)
 			return
 		}
 		if asset, ok := parseGitHubReleaseAsset(rest); ok {
 			h.handleReleaseAsset(w, r, repository, upstreamURL, rest, asset)
 			return
 		}
 		h.handleMetadata(w, r, repository, upstreamURL, rest)
 	})
 }
 // githubReleaseAsset is the identity of a version-pinned release download.
 type githubReleaseAsset struct {
 	owner    string
 	repo     string
 	tag      string
 	filename string
 }
 // parseGitHubReleaseAsset extracts the release identity from a path shaped
 // like {owner}/{repo}/releases/download/{tag}/{asset}.
 func parseGitHubReleaseAsset(path string) (githubReleaseAsset, bool) {
 	matches := githubReleaseAssetPattern.FindStringSubmatch(path)
 	if len(matches) != githubReleaseAssetMatchCount {
 		return githubReleaseAsset{}, false
 	}
 	return githubReleaseAsset{
 		owner:    matches[1],
 		repo:     matches[2],
 		tag:      matches[3],
 		filename: matches[4],
 	}, true
 }
 // handleReleaseAsset fetches and caches a version-pinned release asset in the
 // artifact cache. The configured upstream name is part of the cache identity
 // so two upstreams serving the same path never share bytes.
 func (h *GenericHandler) handleReleaseAsset(w http.ResponseWriter, r *http.Request, repository, upstreamURL, path string, asset githubReleaseAsset) {
 	name := asset.owner + "/" + asset.repo
 	downloadURL := upstreamURL + "/" + path
 	cacheFilename := repository + "/" + asset.filename
 	h.proxy.Logger.Info("generic release asset download",
 		"repository", repository, "name", name, "version", asset.tag, "filename", asset.filename)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), genericEcosystem, name, asset.tag, cacheFilename, downloadURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch release asset")
 		return
 	}
 	if result.Artifact.MediaType == "" {
 		result.Artifact.MediaType = "application/octet-stream"
 	}
 	serveArtifact(w, r.Method, result)
 }
 // handleMetadata serves any other path through the metadata cache. The query
 // string is forwarded and is part of the cache identity. A fixed Accept header
 // keeps all clients on one cached representation.
 func (h *GenericHandler) handleMetadata(w http.ResponseWriter, r *http.Request, repository, upstreamURL, path string) {
 	target := upstreamURL + "/" + path
 	if r.URL.RawQuery != "" {
 		target += "?" + r.URL.RawQuery
 	}
 	h.proxy.ProxyCached(w, r, target, genericEcosystem,
 		h.metadataCacheKey(repository, upstreamURL, path, r.URL.RawQuery), genericAcceptAny)
 }
 // metadataCacheKey derives the metadata cache key from the upstream name, its
 // URL, the request path and query. Hashing the identity keeps distinct
 // upstreams from sharing entries and drops cached entries when an upstream is
 // repointed, mirroring APKHandler.metadataCacheKey.
 func (h *GenericHandler) metadataCacheKey(repository, upstreamURL, path, query string) string {
 	identity := repository + "\x00" + upstreamURL + "\x00" + path + "\x00" + query
 	digest := sha256.Sum256([]byte(identity))
 	return hex.EncodeToString(digest[:])
 }
--- a/internal/handler/generic_test.go
+++ b/internal/handler/generic_test.go
@ -1,311 +0,0 @@
 package handler
 import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
 	upstreamhttp "github.com/git-pkgs/proxy/internal/httpclient"
 	"github.com/git-pkgs/registries/fetch"
 )
 const testReleaseAssetPath = "/jqlang/jq/releases/download/jq-1.7.1/jq-linux-amd64"
 func TestParseGitHubReleaseAsset(t *testing.T) {
 	tests := []struct {
 		path string
 		want githubReleaseAsset
 		ok   bool
 	}{
 		{
 			"jqlang/jq/releases/download/jq-1.7.1/jq-linux-amd64",
 			githubReleaseAsset{owner: "jqlang", repo: "jq", tag: "jq-1.7.1", filename: "jq-linux-amd64"},
 			true,
 		},
 		{
 			"cli/cli/releases/download/v2.63.2/gh_2.63.2_linux_amd64.tar.gz",
 			githubReleaseAsset{owner: "cli", repo: "cli", tag: "v2.63.2", filename: "gh_2.63.2_linux_amd64.tar.gz"},
 			true,
 		},
 		// Mutable: resolves to whatever is latest today.
 		{"jqlang/jq/releases/latest/download/jq-linux-amd64", githubReleaseAsset{}, false},
 		// API lookups and tag listings are not assets.
 		{"repos/jqlang/jq/releases/tags/jq-1.7.1", githubReleaseAsset{}, false},
 		{"jqlang/jq/releases/tag/jq-1.7.1", githubReleaseAsset{}, false},
 		// Source archives are a different shape.
 		{"jqlang/jq/archive/refs/tags/jq-1.7.1.tar.gz", githubReleaseAsset{}, false},
 		// Extra or missing segments.
 		{"jqlang/jq/releases/download/jq-1.7.1", githubReleaseAsset{}, false},
 		{"jqlang/jq/releases/download/jq-1.7.1/dir/asset", githubReleaseAsset{}, false},
 		{"", githubReleaseAsset{}, false},
 	}
 	for _, tt := range tests {
 		got, ok := parseGitHubReleaseAsset(tt.path)
 		if ok != tt.ok || got != tt.want {
 			t.Errorf("parseGitHubReleaseAsset(%q) = (%+v, %v), want (%+v, %v)", tt.path, got, ok, tt.want, tt.ok)
 		}
 	}
 }
 func TestGenericHandler_RejectsUnknownUpstreamAndBadPaths(t *testing.T) {
 	h := NewGenericHandler(testProxy(), map[string]string{"github": "https://github.com"})
 	tests := []struct {
 		name   string
 		method string
 		target string
 		want   int
 	}{
 		{"unknown upstream", http.MethodGet, "/gitlab/owner/repo/releases/download/v1/asset", http.StatusNotFound},
 		{"missing path", http.MethodGet, "/github", http.StatusNotFound},
 		{"missing path with slash", http.MethodGet, "/github/", http.StatusNotFound},
 		{"traversal", http.MethodGet, "/github/../etc/passwd", http.StatusBadRequest},
 		{"encoded traversal", http.MethodGet, "/github/%2e%2e/etc/passwd", http.StatusBadRequest},
 		{"post", http.MethodPost, "/github/owner/repo/releases/download/v1/asset", http.StatusMethodNotAllowed},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			w := httptest.NewRecorder()
 			h.Routes().ServeHTTP(w, httptest.NewRequest(tt.method, tt.target, nil))
 			if w.Code != tt.want {
 				t.Errorf("status = %d, want %d", w.Code, tt.want)
 			}
 		})
 	}
 }
 func TestGenericHandler_ReleaseAssetIsCachedAndServedWhenUpstreamDown(t *testing.T) {
 	asset := []byte("jq binary bytes")
 	var available atomic.Bool
 	available.Store(true)
 	var upstreamRequests atomic.Int32
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		if r.URL.Path != testReleaseAssetPath {
 			http.NotFound(w, r)
 			return
 		}
 		upstreamRequests.Add(1)
 		w.Header().Set("Content-Type", "application/octet-stream")
 		_, _ = w.Write(asset)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewGenericHandler(proxy, map[string]string{"github": upstream.URL})
 	w := serveGenericRequest(h, "/github"+testReleaseAssetPath)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.String(); got != string(asset) {
 		t.Errorf("body = %q, want %q", got, asset)
 	}
 	if got := upstreamRequests.Load(); got != 1 {
 		t.Fatalf("upstream requests = %d, want 1", got)
 	}
 	// Second request must be served from cache, even with the upstream down.
 	available.Store(false)
 	w = serveGenericRequest(h, "/github"+testReleaseAssetPath)
 	if w.Code != http.StatusOK {
 		t.Fatalf("cached: status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.String(); got != string(asset) {
 		t.Errorf("cached: body = %q, want %q", got, asset)
 	}
 	if got := upstreamRequests.Load(); got != 1 {
 		t.Errorf("upstream requests after cache hit = %d, want 1", got)
 	}
 	// HEAD is answered from the same cache entry without a body.
 	w = httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodHead, "/github"+testReleaseAssetPath, nil))
 	if w.Code != http.StatusOK {
 		t.Fatalf("HEAD: status = %d, want 200", w.Code)
 	}
 	if w.Body.Len() != 0 {
 		t.Errorf("HEAD: body length = %d, want 0", w.Body.Len())
 	}
 }
 func TestGenericHandler_ReleaseAssetNotFoundIsNotCached(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		http.NotFound(w, r)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewGenericHandler(proxy, map[string]string{"github": upstream.URL})
 	w := serveGenericRequest(h, "/github"+testReleaseAssetPath)
 	if w.Code != http.StatusNotFound {
 		t.Fatalf("status = %d, want 404: %s", w.Code, w.Body.String())
 	}
 }
 func TestGenericHandler_MetadataForwardsQueryAndServesStaleOnThrottle(t *testing.T) {
 	const apiPath = "/repos/jqlang/jq/releases/tags/jq-1.7.1"
 	body := `{"tag_name":"jq-1.7.1"}`
 	var throttled atomic.Bool
 	var gotQuery string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path != apiPath {
 			http.NotFound(w, r)
 			return
 		}
 		gotQuery = r.URL.RawQuery
 		if throttled.Load() {
 			w.Header().Set("Retry-After", "60")
 			http.Error(w, `{"message":"API rate limit exceeded"}`, http.StatusTooManyRequests)
 			return
 		}
 		w.Header().Set("Content-Type", "application/vnd.github+json")
 		w.Header().Set("ETag", `"v1"`)
 		_, _ = w.Write([]byte(body))
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	proxy.CacheMetadata = true
 	// A tiny TTL so the second request is past freshness and has to consult
 	// the upstream, and the served copy is marked stale.
 	proxy.MetadataTTL = time.Millisecond
 	h := NewGenericHandler(proxy, map[string]string{"github-api": upstream.URL})
 	req := httptest.NewRequest(http.MethodGet, "/github-api"+apiPath+"?per_page=1", nil)
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.String(); got != body {
 		t.Errorf("body = %q, want %q", got, body)
 	}
 	if gotQuery != "per_page=1" {
 		t.Errorf("upstream query = %q, want %q", gotQuery, "per_page=1")
 	}
 	if ct := w.Header().Get("Content-Type"); ct != "application/vnd.github+json" {
 		t.Errorf("Content-Type = %q, want upstream's", ct)
 	}
 	// The upstream now throttles us: the cached body must be served stale
 	// rather than the 429 being passed through.
 	throttled.Store(true)
 	time.Sleep(5 * time.Millisecond)
 	w = httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("throttled: status = %d, want 200 stale: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.String(); got != body {
 		t.Errorf("throttled: body = %q, want cached %q", got, body)
 	}
 	if warning := w.Header().Get("Warning"); !strings.Contains(warning, "110") {
 		t.Errorf("throttled: Warning = %q, want a 110 stale warning", warning)
 	}
 }
 func TestGenericHandler_DistinctUpstreamsDoNotShareCache(t *testing.T) {
 	first := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, _ = w.Write([]byte("from first"))
 	}))
 	defer first.Close()
 	second := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, _ = w.Write([]byte("from second"))
 	}))
 	defer second.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(first.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewGenericHandler(proxy, map[string]string{"one": first.URL, "two": second.URL})
 	w := serveGenericRequest(h, "/one"+testReleaseAssetPath)
 	if got := w.Body.String(); got != "from first" {
 		t.Fatalf("one: body = %q, want %q", got, "from first")
 	}
 	w = serveGenericRequest(h, "/two"+testReleaseAssetPath)
 	if got := w.Body.String(); got != "from second" {
 		t.Fatalf("two: body = %q, want %q (must not reuse the first upstream's cache entry)", got, "from second")
 	}
 }
 func TestGenericHandler_UpstreamAuthIsScopedToTheConfiguredHost(t *testing.T) {
 	asset := []byte("private asset")
 	var storageAuth atomic.Value
 	storageAuth.Store("unset")
 	// The object store the release host redirects to must never see the
 	// token configured for the release host.
 	objectStore := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		storageAuth.Store(r.Header.Get("Authorization"))
 		_, _ = w.Write(asset)
 	}))
 	defer objectStore.Close()
 	var releaseAuth string
 	releaseHost := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		releaseAuth = r.Header.Get("Authorization")
 		if releaseAuth != "Bearer github-token" {
 			http.Error(w, "unauthorized", http.StatusUnauthorized)
 			return
 		}
 		http.Redirect(w, r, objectStore.URL+"/signed"+r.URL.Path, http.StatusFound)
 	}))
 	defer releaseHost.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	authClient := &http.Client{Transport: upstreamhttp.NewTransport(http.DefaultTransport,
 		upstreamhttp.AuthFunc(func(url string) (string, string) {
 			if strings.HasPrefix(url, releaseHost.URL) {
 				return "Authorization", "Bearer github-token"
 			}
 			return "", ""
 		}))}
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(authClient), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewGenericHandler(proxy, map[string]string{"github": releaseHost.URL})
 	w := serveGenericRequest(h, "/github"+testReleaseAssetPath)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Body.String(); got != string(asset) {
 		t.Errorf("body = %q, want %q", got, asset)
 	}
 	if releaseAuth != "Bearer github-token" {
 		t.Errorf("release host Authorization = %q, want the configured token", releaseAuth)
 	}
 	if got := storageAuth.Load(); got != "" {
 		t.Errorf("object store Authorization = %q, want none after the cross-host redirect", got)
 	}
 }
 func serveGenericRequest(h *GenericHandler, target string) *httptest.ResponseRecorder {
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodGet, target, nil))
 	return w
 }
--- a/internal/handler/go.go
+++ b/internal/handler/go.go
@ -1,17 +1,14 @@
 package handler
 import (
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"strings"
 	"github.com/git-pkgs/registries/fetch"
 )
 const (
-	goUpstream      = "https://proxy.golang.org"
+	goUpstream = "https://proxy.golang.org"
 	asciiCaseOffset = 32 // difference between lowercase and uppercase ASCII letters
 )
 // GoHandler handles Go module proxy protocol requests.
@ -30,13 +27,6 @@ func NewGoHandler(proxy *Proxy, proxyURL string) *GoHandler {
 	}
 }
 // NewGoHandlerWithUpstream creates a Go module handler with a custom upstream.
 func NewGoHandlerWithUpstream(proxy *Proxy, proxyURL, upstreamURL string) *GoHandler {
 	h := NewGoHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, goUpstream)
 	return h
 }
 // Routes returns the HTTP handler for Go proxy requests.
 func (h *GoHandler) Routes() http.Handler {
 	// Go module paths can contain slashes, so just use the handler directly
@ -64,19 +54,18 @@ func (h *GoHandler) handleRequest(w http.ResponseWriter, r *http.Request) {
 		module := path[:idx]
 		rest := path[idx+4:] // after "/@v/"
 		decodedMod := decodeGoModule(module)
 		switch {
 		case rest == "list":
 			// GET /{module}/@v/list - list versions
-			h.proxyCached(w, r, decodedMod+"/@v/list")
+			h.proxyUpstream(w, r)
 		case strings.HasSuffix(rest, ".info"):
 			// GET /{module}/@v/{version}.info - version metadata
-			h.proxyCached(w, r, decodedMod+"/@v/"+rest)
+			h.proxyUpstream(w, r)
 		case strings.HasSuffix(rest, ".mod"):
 			// GET /{module}/@v/{version}.mod - go.mod file
-			h.proxyCached(w, r, decodedMod+"/@v/"+rest)
+			h.proxyUpstream(w, r)
 		case strings.HasSuffix(rest, ".zip"):
 			// GET /{module}/@v/{version}.zip - source archive (cache this)
@ -91,8 +80,7 @@ func (h *GoHandler) handleRequest(w http.ResponseWriter, r *http.Request) {
 	// Check for @latest
 	if strings.HasSuffix(path, "/@latest") {
-		module := strings.TrimSuffix(path, "/@latest")
+		h.proxyUpstream(w, r)
 		h.proxyCached(w, r, decodeGoModule(module)+"/@latest")
 		return
 	}
@ -108,19 +96,8 @@ func (h *GoHandler) handleDownload(w http.ResponseWriter, r *http.Request, modul
 	h.proxy.Logger.Info("go module download request",
 		"module", decodedModule, "version", version)
-	downloadURL := h.upstreamURL + r.URL.Path
+	result, err := h.proxy.GetOrFetchArtifact(r.Context(), "golang", decodedModule, version, filename)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), "golang", decodedModule, version, filename, downloadURL,
 	)
 	if err != nil {
 		if errors.Is(err, fetch.ErrNotFound) {
 			http.Error(w, "not found", http.StatusNotFound)
 			return
 		}
 		if errors.Is(err, ErrArtifactBlocked) {
 			http.Error(w, err.Error(), http.StatusForbidden)
 			return
 		}
 		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch module", http.StatusBadGateway)
 		return
@ -131,12 +108,33 @@ func (h *GoHandler) handleDownload(w http.ResponseWriter, r *http.Request, modul
 // proxyUpstream forwards a request to proxy.golang.org without caching.
 func (h *GoHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
-	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, nil)
+	upstreamURL := h.upstreamURL + r.URL.Path
 }
-// proxyCached forwards a request with metadata caching.
+	h.proxy.Logger.Debug("proxying to upstream", "url", upstreamURL)
-func (h *GoHandler) proxyCached(w http.ResponseWriter, r *http.Request, cacheKey string) {
+
-	h.proxy.ProxyCached(w, r, h.upstreamURL+r.URL.Path, "golang", cacheKey, "*/*")
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	// Copy response headers
 	for k, vv := range resp.Header {
 		for _, v := range vv {
 			w.Header().Add(k, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
 // decodeGoModule decodes an encoded module path.
@ -145,7 +143,7 @@ func decodeGoModule(encoded string) string {
 	var b strings.Builder
 	for i := 0; i < len(encoded); i++ {
 		if encoded[i] == '!' && i+1 < len(encoded) {
-			b.WriteByte(encoded[i+1] - asciiCaseOffset) // lowercase to uppercase
+			b.WriteByte(encoded[i+1] - 32) // lowercase to uppercase
 			i++
 		} else {
 			b.WriteByte(encoded[i])
--- a/internal/handler/go_test.go
+++ b/internal/handler/go_test.go
@ -1,49 +1,9 @@
 package handler
 import (
 	"errors"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 	"github.com/git-pkgs/registries/fetch"
 )
 func TestGoModuleDownloadUpstreamErrors(t *testing.T) {
 	tests := []struct {
 		name       string
 		fetchErr   error
 		wantStatus int
 	}{
 		{
 			name:       "module not found",
 			fetchErr:   fetch.ErrNotFound,
 			wantStatus: http.StatusNotFound,
 		},
 		{
 			name:       "upstream failure",
 			fetchErr:   errors.New("connection refused"),
 			wantStatus: http.StatusBadGateway,
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			proxy, _, _, fetcher := setupTestProxy(t)
 			fetcher.fetchErr = tt.fetchErr
 			handler := NewGoHandler(proxy, "http://localhost:8080")
 			req := httptest.NewRequest(http.MethodGet, "/example.com/mod/@v/v1.0.0.zip", nil)
 			resp := httptest.NewRecorder()
 			handler.Routes().ServeHTTP(resp, req)
 			if resp.Code != tt.wantStatus {
 				t.Fatalf("status = %d, want %d", resp.Code, tt.wantStatus)
 			}
 		})
 	}
 }
 func TestDecodeGoModule(t *testing.T) {
 	tests := []struct {
 		encoded string
--- a/internal/handler/gradle.go
+++ b/internal/handler/gradle.go
@ -1,178 +0,0 @@
 package handler
 import (
 	"errors"
 	"io"
 	"net/http"
 	"regexp"
 	"strconv"
 	"strings"
 	"time"
 	"github.com/git-pkgs/proxy/internal/metrics"
 	"github.com/git-pkgs/proxy/internal/storage"
 )
 const (
 	gradleBuildCacheContentType = "application/vnd.gradle.build-cache-artifact.v2"
 	gradleBuildCacheStorageRoot = "_gradle/http-build-cache"
 	defaultGradleMaxUploadSize  = 100 << 20
 )
 var gradleBuildCacheKeyPattern = regexp.MustCompile(`^[A-Za-z0-9][A-Za-z0-9._-]*$`)
 // GradleBuildCacheHandler handles Gradle HttpBuildCache GET/HEAD/PUT requests.
 //
 // This handler accepts /{key} when mounted under a base URL.
 type GradleBuildCacheHandler struct {
 	proxy *Proxy
 }
 // NewGradleBuildCacheHandler creates a Gradle HttpBuildCache handler.
 func NewGradleBuildCacheHandler(proxy *Proxy) *GradleBuildCacheHandler {
 	return &GradleBuildCacheHandler{proxy: proxy}
 }
 // Routes returns the HTTP handler for Gradle HttpBuildCache requests.
 func (h *GradleBuildCacheHandler) Routes() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.Method {
 		case http.MethodGet, http.MethodHead, http.MethodPut:
 		default:
 			http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
 			return
 		}
 		key, statusCode := h.parseCacheKey(r.URL.Path)
 		if statusCode != http.StatusOK {
 			if statusCode == http.StatusNotFound {
 				http.NotFound(w, r)
 				return
 			}
 			http.Error(w, "invalid cache key", statusCode)
 			return
 		}
 		if r.Method == http.MethodPut {
 			if h.proxy.GradleReadOnly {
 				http.Error(w, "gradle build cache is read-only", http.StatusMethodNotAllowed)
 				return
 			}
 			h.handlePut(w, r, key)
 			return
 		}
 		h.handleGetOrHead(w, r, key)
 	})
 }
 func (h *GradleBuildCacheHandler) parseCacheKey(urlPath string) (string, int) {
 	keyPath := strings.TrimPrefix(urlPath, "/")
 	if keyPath == "" {
 		return "", http.StatusNotFound
 	}
 	if containsPathTraversal(keyPath) {
 		return "", http.StatusBadRequest
 	}
 	if strings.Contains(keyPath, "/") {
 		return "", http.StatusNotFound
 	}
 	if !gradleBuildCacheKeyPattern.MatchString(keyPath) {
 		return "", http.StatusBadRequest
 	}
 	return keyPath, http.StatusOK
 }
 func (h *GradleBuildCacheHandler) cacheStoragePath(key string) string {
 	return gradleBuildCacheStorageRoot + "/" + key
 }
 func (h *GradleBuildCacheHandler) handleGetOrHead(w http.ResponseWriter, r *http.Request, key string) {
 	storagePath := h.cacheStoragePath(key)
 	w.Header().Set(headerContentType, gradleBuildCacheContentType)
 	if r.Method == http.MethodHead {
 		existsStart := time.Now()
 		exists, err := h.proxy.Storage.Exists(r.Context(), storagePath)
 		metrics.RecordStorageOperation("read", time.Since(existsStart))
 		if err != nil {
 			metrics.RecordStorageError("read")
 			h.proxy.Logger.Error("failed to check gradle build cache entry", "key", key, "error", err)
 			http.Error(w, "failed to read cache entry", http.StatusInternalServerError)
 			return
 		}
 		if !exists {
 			metrics.RecordCacheMiss("gradle")
 			http.NotFound(w, r)
 			return
 		}
 		metrics.RecordCacheHit("gradle")
 		sizeStart := time.Now()
 		size, err := h.proxy.Storage.Size(r.Context(), storagePath)
 		metrics.RecordStorageOperation("read", time.Since(sizeStart))
 		if err != nil {
 			metrics.RecordStorageError("read")
 		} else if size >= 0 {
 			w.Header().Set(headerContentLength, strconv.FormatInt(size, 10))
 		}
 		w.WriteHeader(http.StatusOK)
 		return
 	}
 	readStart := time.Now()
 	reader, err := h.proxy.Storage.Open(r.Context(), storagePath)
 	metrics.RecordStorageOperation("read", time.Since(readStart))
 	if err != nil {
 		if errors.Is(err, storage.ErrNotFound) {
 			metrics.RecordCacheMiss("gradle")
 			http.NotFound(w, r)
 			return
 		}
 		metrics.RecordStorageError("read")
 		h.proxy.Logger.Error("failed to open gradle build cache entry", "key", key, "error", err)
 		http.Error(w, "failed to read cache entry", http.StatusInternalServerError)
 		return
 	}
 	defer func() { _ = reader.Close() }()
 	metrics.RecordCacheHit("gradle")
 	w.WriteHeader(http.StatusOK)
 	_, _ = io.Copy(w, reader)
 }
 func (h *GradleBuildCacheHandler) handlePut(w http.ResponseWriter, r *http.Request, key string) {
 	storagePath := h.cacheStoragePath(key)
 	maxUploadSize := h.proxy.GradleMaxUploadSize
 	if maxUploadSize <= 0 {
 		maxUploadSize = defaultGradleMaxUploadSize
 	}
 	r.Body = http.MaxBytesReader(w, r.Body, maxUploadSize)
 	storeStart := time.Now()
 	_, hash, err := h.proxy.Storage.Store(r.Context(), storagePath, r.Body)
 	metrics.RecordStorageOperation("write", time.Since(storeStart))
 	if err != nil {
 		var maxBytesErr *http.MaxBytesError
 		if errors.As(err, &maxBytesErr) {
 			http.Error(w, "cache entry too large", http.StatusRequestEntityTooLarge)
 			return
 		}
 		metrics.RecordStorageError("write")
 		h.proxy.Logger.Error("failed to store gradle build cache entry", "key", key, "error", err)
 		http.Error(w, "failed to write cache entry", http.StatusInternalServerError)
 		return
 	}
 	w.Header().Set(headerContentLength, "0")
 	w.Header().Set(headerETag, `"`+hash+`"`)
 	w.WriteHeader(http.StatusCreated)
 }
--- a/internal/handler/gradle_test.go
+++ b/internal/handler/gradle_test.go
@ -1,285 +0,0 @@
 package handler
 import (
 	"io"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"github.com/git-pkgs/proxy/internal/metrics"
 	"github.com/prometheus/client_golang/prometheus/testutil"
 )
 func TestGradleBuildCacheHandler_PutGetHead(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	key := "a1b2c3d4e5f6"
 	payload := "cache entry content"
 	putReq, err := http.NewRequest(http.MethodPut, srv.URL+"/"+key, strings.NewReader(payload))
 	if err != nil {
 		t.Fatalf("failed to create PUT request: %v", err)
 	}
 	putResp, err := http.DefaultClient.Do(putReq)
 	if err != nil {
 		t.Fatalf("PUT request failed: %v", err)
 	}
 	_ = putResp.Body.Close()
 	if putResp.StatusCode != http.StatusCreated {
 		t.Fatalf("PUT status = %d, want %d", putResp.StatusCode, http.StatusCreated)
 	}
 	getResp, err := http.Get(srv.URL + "/" + key)
 	if err != nil {
 		t.Fatalf("GET request failed: %v", err)
 	}
 	defer func() { _ = getResp.Body.Close() }()
 	if getResp.StatusCode != http.StatusOK {
 		t.Fatalf("GET status = %d, want %d", getResp.StatusCode, http.StatusOK)
 	}
 	if getResp.Header.Get("Content-Type") != gradleBuildCacheContentType {
 		t.Fatalf("GET Content-Type = %q, want %q", getResp.Header.Get("Content-Type"), gradleBuildCacheContentType)
 	}
 	body, _ := io.ReadAll(getResp.Body)
 	if string(body) != payload {
 		t.Fatalf("GET body = %q, want %q", body, payload)
 	}
 	headReq, err := http.NewRequest(http.MethodHead, srv.URL+"/"+key, nil)
 	if err != nil {
 		t.Fatalf("failed to create HEAD request: %v", err)
 	}
 	headResp, err := http.DefaultClient.Do(headReq)
 	if err != nil {
 		t.Fatalf("HEAD request failed: %v", err)
 	}
 	defer func() { _ = headResp.Body.Close() }()
 	if headResp.StatusCode != http.StatusOK {
 		t.Fatalf("HEAD status = %d, want %d", headResp.StatusCode, http.StatusOK)
 	}
 	body, _ = io.ReadAll(headResp.Body)
 	if len(body) != 0 {
 		t.Fatalf("HEAD body length = %d, want 0", len(body))
 	}
 }
 func TestGradleBuildCacheHandler_RootKeyPath(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	key := "rootpathkey"
 	putReq, err := http.NewRequest(http.MethodPut, srv.URL+"/"+key, strings.NewReader("root"))
 	if err != nil {
 		t.Fatalf("failed to create PUT request: %v", err)
 	}
 	putResp, err := http.DefaultClient.Do(putReq)
 	if err != nil {
 		t.Fatalf("PUT request failed: %v", err)
 	}
 	_ = putResp.Body.Close()
 	if putResp.StatusCode != http.StatusCreated {
 		t.Fatalf("PUT status = %d, want %d", putResp.StatusCode, http.StatusCreated)
 	}
 	getResp, err := http.Get(srv.URL + "/" + key)
 	if err != nil {
 		t.Fatalf("GET request failed: %v", err)
 	}
 	defer func() { _ = getResp.Body.Close() }()
 	if getResp.StatusCode != http.StatusOK {
 		t.Fatalf("GET status = %d, want %d", getResp.StatusCode, http.StatusOK)
 	}
 }
 func TestGradleBuildCacheHandler_GetMiss(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	resp, err := http.Get(srv.URL + "/missing-key")
 	if err != nil {
 		t.Fatalf("GET request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusNotFound {
 		t.Fatalf("status = %d, want %d", resp.StatusCode, http.StatusNotFound)
 	}
 }
 func TestGradleBuildCacheHandler_MethodNotAllowed(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	req := httptest.NewRequest(http.MethodPost, "/key", nil)
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusMethodNotAllowed {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusMethodNotAllowed)
 	}
 }
 func TestGradleBuildCacheHandler_PathTraversalRejected(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	req := httptest.NewRequest(http.MethodGet, "/../secret", nil)
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusBadRequest {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusBadRequest)
 	}
 }
 func TestGradleBuildCacheHandler_CachePrefixRejected(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	req := httptest.NewRequest(http.MethodGet, "/cache/key", nil)
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusNotFound {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusNotFound)
 	}
 }
 func TestGradleBuildCacheHandler_PutOverwriteReturnsCreated(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	key := "overwrite-key"
 	for i, payload := range []string{"first", "second"} {
 		req, err := http.NewRequest(http.MethodPut, srv.URL+"/"+key, strings.NewReader(payload))
 		if err != nil {
 			t.Fatalf("failed to create PUT request: %v", err)
 		}
 		resp, err := http.DefaultClient.Do(req)
 		if err != nil {
 			t.Fatalf("PUT request failed: %v", err)
 		}
 		_ = resp.Body.Close()
 		want := http.StatusCreated
 		if resp.StatusCode != want {
 			t.Fatalf("PUT #%d status = %d, want %d", i+1, resp.StatusCode, want)
 		}
 	}
 }
 func TestGradleBuildCacheHandler_PutReadOnly(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.GradleReadOnly = true
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	req, err := http.NewRequest(http.MethodPut, srv.URL+"/readonly-key", strings.NewReader("payload"))
 	if err != nil {
 		t.Fatalf("failed to create PUT request: %v", err)
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		t.Fatalf("PUT request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusMethodNotAllowed {
 		t.Fatalf("PUT status = %d, want %d", resp.StatusCode, http.StatusMethodNotAllowed)
 	}
 }
 func TestGradleBuildCacheHandler_PutTooLarge(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.GradleMaxUploadSize = 4
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	req, err := http.NewRequest(http.MethodPut, srv.URL+"/oversized-key", strings.NewReader("12345"))
 	if err != nil {
 		t.Fatalf("failed to create PUT request: %v", err)
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		t.Fatalf("PUT request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusRequestEntityTooLarge {
 		t.Fatalf("PUT status = %d, want %d", resp.StatusCode, http.StatusRequestEntityTooLarge)
 	}
 }
 func TestGradleBuildCacheHandler_RecordsMetrics(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewGradleBuildCacheHandler(proxy)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	hitsBefore := testutil.ToFloat64(metrics.CacheHits.WithLabelValues("gradle"))
 	missesBefore := testutil.ToFloat64(metrics.CacheMisses.WithLabelValues("gradle"))
 	key := "metrics-key"
 	putReq, err := http.NewRequest(http.MethodPut, srv.URL+"/"+key, strings.NewReader("payload"))
 	if err != nil {
 		t.Fatalf("failed to create PUT request: %v", err)
 	}
 	putResp, err := http.DefaultClient.Do(putReq)
 	if err != nil {
 		t.Fatalf("PUT request failed: %v", err)
 	}
 	_ = putResp.Body.Close()
 	getResp, err := http.Get(srv.URL + "/" + key)
 	if err != nil {
 		t.Fatalf("GET request failed: %v", err)
 	}
 	_ = getResp.Body.Close()
 	headReq, err := http.NewRequest(http.MethodHead, srv.URL+"/"+key, nil)
 	if err != nil {
 		t.Fatalf("failed to create HEAD request: %v", err)
 	}
 	headResp, err := http.DefaultClient.Do(headReq)
 	if err != nil {
 		t.Fatalf("HEAD request failed: %v", err)
 	}
 	_ = headResp.Body.Close()
 	missResp, err := http.Get(srv.URL + "/missing-key")
 	if err != nil {
 		t.Fatalf("GET miss request failed: %v", err)
 	}
 	_ = missResp.Body.Close()
 	hitsAfter := testutil.ToFloat64(metrics.CacheHits.WithLabelValues("gradle"))
 	missesAfter := testutil.ToFloat64(metrics.CacheMisses.WithLabelValues("gradle"))
 	if diff := hitsAfter - hitsBefore; diff != 2 {
 		t.Fatalf("cache hits delta = %.0f, want 2", diff)
 	}
 	if diff := missesAfter - missesBefore; diff != 1 {
 		t.Fatalf("cache misses delta = %.0f, want 1", diff)
 	}
 }
--- a/internal/handler/handler.go
+++ b/internal/handler/handler.go
--- a/internal/handler/handler_bench_test.go
+++ b/internal/handler/handler_bench_test.go
@ -1,300 +0,0 @@
 package handler
 import (
 	"bytes"
 	"context"
 	"crypto/sha256"
 	"database/sql"
 	"encoding/hex"
 	"fmt"
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"path/filepath"
 	"strings"
 	"testing"
 	"time"
 	"github.com/git-pkgs/proxy/internal/database"
 	"github.com/git-pkgs/proxy/internal/storage"
 	"github.com/git-pkgs/purl"
 	"github.com/git-pkgs/registries/fetch"
 )
 const benchmarkArtifactSize = 64 << 10
 const benchmarkMetadataSize = 1 << 20
 type benchmarkResponseWriter struct {
 	header http.Header
 }
 func (w *benchmarkResponseWriter) Header() http.Header {
 	return w.header
 }
 func (w *benchmarkResponseWriter) Write(p []byte) (int, error) {
 	return len(p), nil
 }
 func (w *benchmarkResponseWriter) WriteHeader(_ int) {}
 func benchmarkCachedProxy(b *testing.B) (*Proxy, *mockStorage) {
 	b.Helper()
 	proxy, db, store, _ := setupTestProxy(b)
 	content := strings.Repeat("x", benchmarkArtifactSize)
 	seedPackage(b, db, store, "npm", "lodash", "4.17.21", "lodash-4.17.21.tgz", content)
 	artifact, err := db.GetArtifact("pkg:npm/lodash@4.17.21", "lodash-4.17.21.tgz")
 	if err != nil {
 		b.Fatalf("get seeded artifact: %v", err)
 	}
 	sum := sha256.Sum256([]byte(content))
 	artifact.ContentHash.String = hex.EncodeToString(sum[:])
 	if err := db.UpsertArtifact(artifact); err != nil {
 		b.Fatalf("update seeded artifact hash: %v", err)
 	}
 	return proxy, store
 }
 func BenchmarkArtifactCacheHit(b *testing.B) {
 	ctx := context.Background()
 	b.Run("stream-64KiB", func(b *testing.B) {
 		proxy, _ := benchmarkCachedProxy(b)
 		w := &benchmarkResponseWriter{header: make(http.Header)}
 		b.SetBytes(benchmarkArtifactSize)
 		b.ReportAllocs()
 		b.ResetTimer()
 		for b.Loop() {
 			result, err := proxy.GetOrFetchArtifact(ctx, "npm", "lodash", "4.17.21", "lodash-4.17.21.tgz")
 			if err != nil {
 				b.Fatal(err)
 			}
 			ServeArtifact(w, result)
 		}
 	})
 	b.Run("direct-serve", func(b *testing.B) {
 		proxy, store := benchmarkCachedProxy(b)
 		proxy.DirectServe = true
 		store.signedURL = "https://storage.example/npm/lodash-4.17.21.tgz?signature=abc"
 		w := &benchmarkResponseWriter{header: make(http.Header)}
 		b.ReportAllocs()
 		b.ResetTimer()
 		for b.Loop() {
 			result, err := proxy.GetOrFetchArtifact(ctx, "npm", "lodash", "4.17.21", "lodash-4.17.21.tgz")
 			if err != nil {
 				b.Fatal(err)
 			}
 			ServeArtifact(w, result)
 		}
 	})
 }
 func BenchmarkArtifactCacheHitParallel(b *testing.B) {
 	proxy, _ := benchmarkCachedProxy(b)
 	ctx := context.Background()
 	b.SetBytes(benchmarkArtifactSize)
 	b.ReportAllocs()
 	b.ResetTimer()
 	b.RunParallel(func(pb *testing.PB) {
 		w := &benchmarkResponseWriter{header: make(http.Header)}
 		for pb.Next() {
 			result, err := proxy.GetOrFetchArtifact(ctx, "npm", "lodash", "4.17.21", "lodash-4.17.21.tgz")
 			if err != nil {
 				b.Error(err)
 				return
 			}
 			ServeArtifact(w, result)
 		}
 	})
 }
 func BenchmarkReadMetadata(b *testing.B) {
 	payload := bytes.Repeat([]byte("x"), benchmarkMetadataSize)
 	proxy := &Proxy{MetadataMaxSize: benchmarkMetadataSize}
 	b.SetBytes(benchmarkMetadataSize)
 	b.ReportAllocs()
 	var data []byte
 	for b.Loop() {
 		var err error
 		data, err = proxy.ReadMetadata(bytes.NewReader(payload))
 		if err != nil {
 			b.Fatal(err)
 		}
 	}
 	if len(data) != len(payload) {
 		b.Fatalf("metadata size = %d, want %d", len(data), len(payload))
 	}
 }
 func BenchmarkArtifactPURLConstruction(b *testing.B) {
 	for _, tc := range []struct {
 		name      string
 		ecosystem string
 		packageID string
 	}{
 		{"npm", "npm", "lodash"},
 		{"scoped-npm", "npm", "@scope/package"},
 		{"go", "golang", "github.com/git-pkgs/proxy"},
 	} {
 		b.Run(tc.name, func(b *testing.B) {
 			b.ReportAllocs()
 			var packagePURL, versionPURL string
 			for b.Loop() {
 				packagePURL = purl.MakePURLString(tc.ecosystem, tc.packageID, "")
 				versionPURL = purl.MakePURLString(tc.ecosystem, tc.packageID, "1.2.3")
 			}
 			if packagePURL == "" || versionPURL == "" {
 				b.Fatal("empty PURL")
 			}
 		})
 	}
 }
 type benchmarkNPMServer struct {
 	client      *http.Client
 	requestURL  string
 	db          *database.DB
 	versionPURL string
 	filename    string
 }
 func newBenchmarkNPMServer(b *testing.B) *benchmarkNPMServer {
 	b.Helper()
 	ctx := context.Background()
 	dir := b.TempDir()
 	db, err := database.Create(filepath.Join(dir, "benchmark.db"))
 	if err != nil {
 		b.Fatalf("create database: %v", err)
 	}
 	b.Cleanup(func() { _ = db.Close() })
 	store, err := storage.OpenBucket(ctx, "file://"+filepath.Join(dir, "cache"))
 	if err != nil {
 		b.Fatalf("open storage: %v", err)
 	}
 	b.Cleanup(func() { _ = store.Close() })
 	content := bytes.Repeat([]byte("x"), benchmarkArtifactSize)
 	storagePath := storage.ArtifactPath("npm", "", "lodash", "4.17.21", "lodash-4.17.21.tgz")
 	size, hash, err := store.Store(ctx, storagePath, bytes.NewReader(content))
 	if err != nil {
 		b.Fatalf("store artifact: %v", err)
 	}
 	pkg := &database.Package{PURL: "pkg:npm/lodash", Ecosystem: "npm", Name: "lodash"}
 	if err := db.UpsertPackage(pkg); err != nil {
 		b.Fatalf("seed package: %v", err)
 	}
 	version := &database.Version{PURL: "pkg:npm/lodash@4.17.21", PackagePURL: pkg.PURL}
 	if err := db.UpsertVersion(version); err != nil {
 		b.Fatalf("seed version: %v", err)
 	}
 	artifact := &database.Artifact{
 		VersionPURL: version.PURL,
 		Filename:    "lodash-4.17.21.tgz",
 		UpstreamURL: "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
 		StoragePath: sql.NullString{String: storagePath, Valid: true},
 		ContentHash: sql.NullString{String: hash, Valid: true},
 		Size:        sql.NullInt64{Int64: size, Valid: true},
 		ContentType: sql.NullString{String: "application/gzip", Valid: true},
 		FetchedAt:   sql.NullTime{Time: time.Now(), Valid: true},
 	}
 	if err := db.UpsertArtifact(artifact); err != nil {
 		b.Fatalf("seed artifact: %v", err)
 	}
 	logger := slog.New(slog.NewTextHandler(io.Discard, nil))
 	proxy := NewProxy(db, store, &mockFetcher{}, fetch.NewResolver(), logger)
 	handler := NewNPMHandler(proxy, "http://proxy.example", "https://registry.npmjs.org")
 	server := httptest.NewServer(handler.Routes())
 	b.Cleanup(server.Close)
 	client := server.Client()
 	return &benchmarkNPMServer{
 		client:      client,
 		requestURL:  server.URL + "/lodash/-/lodash-4.17.21.tgz",
 		db:          db,
 		versionPURL: version.PURL,
 		filename:    artifact.Filename,
 	}
 }
 func (s *benchmarkNPMServer) request() error {
 	resp, err := s.client.Get(s.requestURL)
 	if err != nil {
 		return fmt.Errorf("GET cached artifact: %w", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("GET cached artifact status = %d, want %d", resp.StatusCode, http.StatusOK)
 	}
 	n, err := io.Copy(io.Discard, resp.Body)
 	if err != nil {
 		return fmt.Errorf("read cached artifact: %w", err)
 	}
 	if n != benchmarkArtifactSize {
 		return fmt.Errorf("cached artifact size = %d, want %d", n, benchmarkArtifactSize)
 	}
 	return nil
 }
 func (s *benchmarkNPMServer) hitCount(b *testing.B) int64 {
 	b.Helper()
 	artifact, err := s.db.GetArtifact(s.versionPURL, s.filename)
 	if err != nil {
 		b.Fatalf("get artifact hit count: %v", err)
 	}
 	return artifact.HitCount
 }
 func benchmarkNPMArtifactCacheHitHTTP(b *testing.B, parallel bool) {
 	server := newBenchmarkNPMServer(b)
 	if err := server.request(); err != nil {
 		b.Fatal(err)
 	}
 	startHits := server.hitCount(b)
 	b.SetBytes(benchmarkArtifactSize)
 	b.ReportAllocs()
 	b.ResetTimer()
 	if parallel {
 		b.RunParallel(func(pb *testing.PB) {
 			for pb.Next() {
 				if err := server.request(); err != nil {
 					b.Error(err)
 					return
 				}
 			}
 		})
 	} else {
 		for b.Loop() {
 			if err := server.request(); err != nil {
 				b.Fatal(err)
 			}
 		}
 	}
 	b.StopTimer()
 	if hitCount := server.hitCount(b) - startHits; hitCount != int64(b.N) {
 		b.Fatalf("new artifact hits = %d, want %d", hitCount, b.N)
 	}
 	b.ReportMetric(float64(b.N)/b.Elapsed().Seconds(), "requests/s")
 }
 func BenchmarkNPMArtifactCacheHitHTTP(b *testing.B) {
 	benchmarkNPMArtifactCacheHitHTTP(b, false)
 }
 func BenchmarkNPMArtifactCacheHitHTTPParallel(b *testing.B) {
 	benchmarkNPMArtifactCacheHitHTTP(b, true)
 }
--- a/internal/handler/handler_test.go
+++ b/internal/handler/handler_test.go
--- a/internal/handler/helm.go
+++ b/internal/handler/helm.go
@ -1,364 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
 	"path"
 	"strings"
 	"time"
 	"gopkg.in/yaml.v3"
 )
 const (
 	helmMetadataEcosystem = "helm"
 	helmIndexFilename     = "index.yaml"
 	sha256HexLength       = 64
 )
 // HelmHandler serves read-only HTTP Helm chart repositories. Each configured
 // repository is mounted at /helm/{repository}/.
 type HelmHandler struct {
 	proxy        *Proxy
 	proxyURL     string
 	repositories map[string]string
 }
 // NewHelmHandler creates a Helm chart repository protocol handler.
 func NewHelmHandler(proxy *Proxy, proxyURL string, repositories map[string]string) *HelmHandler {
 	h := &HelmHandler{
 		proxyURL:     strings.TrimSuffix(proxyURL, "/"),
 		repositories: make(map[string]string, len(repositories)),
 		proxy:        proxy,
 	}
 	for name, repositoryURL := range repositories {
 		h.repositories[name] = strings.TrimSuffix(repositoryURL, "/")
 	}
 	return h
 }
 // Routes returns the HTTP handler for Helm chart repository requests.
 func (h *HelmHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /{repository}/index.yaml", h.handleIndex)
 	mux.HandleFunc("GET /{repository}/charts/{digest}/{filename}", h.handleChart)
 	return mux
 }
 func (h *HelmHandler) handleIndex(w http.ResponseWriter, r *http.Request) {
 	repository, upstreamURL, ok := h.repositoryForRequest(r)
 	if !ok {
 		http.NotFound(w, r)
 		return
 	}
 	body, contentType, err := h.fetchIndex(r, repository, upstreamURL)
 	if err != nil {
 		h.serveIndexError(w, err)
 		return
 	}
 	rewritten, err := h.rewriteIndex(repository, upstreamURL, body)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to rewrite Helm index", "repository", repository, "error", err)
 		http.Error(w, "invalid Helm repository index", http.StatusBadGateway)
 		return
 	}
 	h.proxy.writeMetadataCachedResponse(w, r, helmMetadataEcosystem, h.indexCacheKey(repository, upstreamURL), rewritten, contentType)
 }
 func (h *HelmHandler) handleChart(w http.ResponseWriter, r *http.Request) {
 	repository, upstreamURL, ok := h.repositoryForRequest(r)
 	if !ok {
 		http.NotFound(w, r)
 		return
 	}
 	digest, ok := normalizeHelmDigest(r.PathValue("digest"))
 	filename := r.PathValue("filename")
 	if !ok || filename == "" || strings.Contains(filename, "/") || containsPathTraversal(filename) {
 		http.Error(w, "invalid chart request", http.StatusBadRequest)
 		return
 	}
 	cached, err := h.proxy.GetCachedArtifact(r.Context(), helmMetadataEcosystem, repository, digest, filename)
 	if err != nil {
 		h.proxy.Logger.Error("failed to check Helm chart cache", "error", err)
 		http.Error(w, "failed to check chart cache", http.StatusInternalServerError)
 		return
 	}
 	if cached != nil {
 		h.serveChart(w, r, repository, digest, filename, cached)
 		return
 	}
 	body, _, err := h.fetchIndex(r, repository, upstreamURL)
 	if err != nil {
 		h.serveIndexError(w, err)
 		return
 	}
 	downloadURL, err := h.findChartDownload(upstreamURL, body, digest, filename)
 	if err != nil {
 		if errors.Is(err, errHelmChartNotFound) {
 			http.NotFound(w, r)
 			return
 		}
 		h.proxy.Logger.Warn("failed to read Helm index", "repository", repository, "error", err)
 		http.Error(w, "invalid Helm repository index", http.StatusBadGateway)
 		return
 	}
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), helmMetadataEcosystem, repository, digest, filename, downloadURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch chart")
 		return
 	}
 	h.serveChart(w, r, repository, digest, filename, result)
 }
 func (h *HelmHandler) serveChart(w http.ResponseWriter, r *http.Request, repository, digest, filename string, result *CacheResult) {
 	if !strings.EqualFold(result.Artifact.Digest.Encoded(), digest) {
 		if result.Reader != nil {
 			_ = result.Reader.Close()
 		}
 		if clearErr := h.proxy.ClearCachedArtifact(r.Context(), helmMetadataEcosystem, repository, digest, filename); clearErr != nil {
 			h.proxy.Logger.Warn("failed to clear Helm chart with invalid digest", "error", clearErr)
 		}
 		http.Error(w, "chart digest verification failed", http.StatusBadGateway)
 		return
 	}
 	if result.Artifact.MediaType == "" {
 		w.Header().Set(headerContentType, "application/gzip")
 	}
 	ServeArtifact(w, result)
 }
 func (h *HelmHandler) repositoryForRequest(r *http.Request) (name, upstreamURL string, ok bool) {
 	name = r.PathValue("repository")
 	upstreamURL, ok = h.repositories[name]
 	return name, upstreamURL, ok
 }
 func (h *HelmHandler) fetchIndex(r *http.Request, repository, upstreamURL string) ([]byte, string, error) {
 	return h.proxy.FetchOrCacheMetadata(
 		r.Context(),
 		helmMetadataEcosystem,
 		h.indexCacheKey(repository, upstreamURL),
 		upstreamURL+"/"+helmIndexFilename,
 		"application/x-yaml, text/yaml;q=0.9, */*;q=0.1",
 	)
 }
 func (h *HelmHandler) indexCacheKey(repository, upstreamURL string) string {
 	identity := repository + "\x00" + upstreamURL
 	digest := sha256.Sum256([]byte(identity))
 	return hex.EncodeToString(digest[:])
 }
 func (h *HelmHandler) serveIndexError(w http.ResponseWriter, err error) {
 	if errors.Is(err, ErrUpstreamNotFound) {
 		http.Error(w, "Helm repository not found", http.StatusNotFound)
 		return
 	}
 	h.proxy.Logger.Error("failed to fetch Helm index", "error", err)
 	http.Error(w, "failed to fetch Helm repository index", http.StatusBadGateway)
 }
 func (h *HelmHandler) rewriteIndex(repository, upstreamURL string, body []byte) ([]byte, error) {
 	document, entries, err := parseHelmIndex(body)
 	if err != nil {
 		return nil, err
 	}
 	for i := 0; i < len(entries.Content); i += 2 {
 		chartName := entries.Content[i].Value
 		releases := entries.Content[i+1]
 		if releases.Kind != yaml.SequenceNode {
 			return nil, fmt.Errorf("chart %q releases must be a sequence", chartName)
 		}
 		filtered := make([]*yaml.Node, 0, len(releases.Content))
 		for _, release := range releases.Content {
 			chart, err := h.parseChartRelease(chartName, upstreamURL, release)
 			if err != nil {
 				return nil, err
 			}
 			if h.chartOnCooldown(chartName, chart.created) {
 				continue
 			}
 			for _, download := range chart.downloads {
 				download.node.Value = h.chartProxyURL(repository, chart.digest, download.filename)
 			}
 			filtered = append(filtered, release)
 		}
 		releases.Content = filtered
 	}
 	return yaml.Marshal(document)
 }
 func (h *HelmHandler) findChartDownload(upstreamURL string, body []byte, digest, filename string) (string, error) {
 	_, entries, err := parseHelmIndex(body)
 	if err != nil {
 		return "", err
 	}
 	for i := 0; i < len(entries.Content); i += 2 {
 		chartName := entries.Content[i].Value
 		releases := entries.Content[i+1]
 		if releases.Kind != yaml.SequenceNode {
 			return "", fmt.Errorf("chart %q releases must be a sequence", chartName)
 		}
 		for _, release := range releases.Content {
 			chart, err := h.parseChartRelease(chartName, upstreamURL, release)
 			if err != nil {
 				return "", err
 			}
 			if chart.digest != digest || h.chartOnCooldown(chartName, chart.created) {
 				continue
 			}
 			for _, download := range chart.downloads {
 				if download.filename == filename {
 					return download.url, nil
 				}
 			}
 		}
 	}
 	return "", errHelmChartNotFound
 }
 func (h *HelmHandler) chartOnCooldown(chartName string, created time.Time) bool {
 	return !created.IsZero() && h.proxy.Cooldown != nil && h.proxy.Cooldown.Enabled() &&
 		!h.proxy.Cooldown.IsAllowed(helmMetadataEcosystem, canonicalPackagePURL(helmMetadataEcosystem, chartName), created)
 }
 type helmChartDownload struct {
 	node     *yaml.Node
 	url      string
 	filename string
 }
 type helmChartRelease struct {
 	created   time.Time
 	digest    string
 	downloads []helmChartDownload
 }
 var errHelmChartNotFound = errors.New("chart not found in Helm index")
 func (h *HelmHandler) parseChartRelease(chartName, upstreamURL string, release *yaml.Node) (helmChartRelease, error) {
 	digestNode := helmMappingValue(release, "digest")
 	urlsNode := helmMappingValue(release, "urls")
 	if digestNode == nil || urlsNode == nil || urlsNode.Kind != yaml.SequenceNode || len(urlsNode.Content) == 0 {
 		return helmChartRelease{}, fmt.Errorf("chart %q has no digest or URLs", chartName)
 	}
 	digest, ok := normalizeHelmDigest(digestNode.Value)
 	if !ok {
 		return helmChartRelease{}, fmt.Errorf("chart %q has invalid digest", chartName)
 	}
 	baseURL, err := url.Parse(upstreamURL + "/" + helmIndexFilename)
 	if err != nil {
 		return helmChartRelease{}, fmt.Errorf("parsing Helm repository URL: %w", err)
 	}
 	chart := helmChartRelease{digest: digest}
 	if createdNode := helmMappingValue(release, "created"); createdNode != nil && createdNode.Value != "" {
 		chart.created, err = time.Parse(time.RFC3339Nano, createdNode.Value)
 		if err != nil {
 			return helmChartRelease{}, fmt.Errorf("chart %q has invalid creation time: %w", chartName, err)
 		}
 	}
 	for _, urlNode := range urlsNode.Content {
 		if urlNode.Kind != yaml.ScalarNode {
 			return helmChartRelease{}, fmt.Errorf("chart %q has invalid URL", chartName)
 		}
 		reference, err := url.Parse(urlNode.Value)
 		if err != nil {
 			return helmChartRelease{}, fmt.Errorf("parsing chart %q URL: %w", chartName, err)
 		}
 		downloadURL := baseURL.ResolveReference(reference)
 		if (downloadURL.Scheme != "http" && downloadURL.Scheme != "https") || downloadURL.Host == "" {
 			return helmChartRelease{}, fmt.Errorf("chart %q URL must be HTTP(S)", chartName)
 		}
 		filename := path.Base(downloadURL.Path)
 		if filename == "." || filename == "/" || filename == "" || !strings.HasSuffix(filename, ".tgz") {
 			return helmChartRelease{}, fmt.Errorf("chart %q URL must point to a .tgz file", chartName)
 		}
 		chart.downloads = append(chart.downloads, helmChartDownload{
 			node:     urlNode,
 			url:      downloadURL.String(),
 			filename: filename,
 		})
 	}
 	return chart, nil
 }
 func (h *HelmHandler) chartProxyURL(repository, digest, filename string) string {
 	return fmt.Sprintf("%s/helm/%s/charts/%s/%s", h.proxyURL,
 		url.PathEscape(repository), digest, url.PathEscape(filename))
 }
 func parseHelmIndex(body []byte) (*yaml.Node, *yaml.Node, error) {
 	var document yaml.Node
 	if err := yaml.Unmarshal(body, &document); err != nil {
 		return nil, nil, fmt.Errorf("parsing Helm index: %w", err)
 	}
 	entries, err := helmIndexEntries(&document)
 	if err != nil {
 		return nil, nil, err
 	}
 	return &document, entries, nil
 }
 func helmIndexEntries(document *yaml.Node) (*yaml.Node, error) {
 	if document == nil {
 		return nil, errors.New("helm index is empty")
 	}
 	if len(document.Content) != 1 || document.Content[0].Kind != yaml.MappingNode {
 		return nil, errors.New("helm index must be a mapping")
 	}
 	entries := helmMappingValue(document.Content[0], "entries")
 	if entries == nil || entries.Kind != yaml.MappingNode {
 		return nil, errors.New("helm index has no entries mapping")
 	}
 	if len(entries.Content)%2 != 0 {
 		return nil, errors.New("helm index entries mapping has an incomplete key-value pair")
 	}
 	return entries, nil
 }
 func helmMappingValue(mapping *yaml.Node, key string) *yaml.Node {
 	if mapping == nil || mapping.Kind != yaml.MappingNode {
 		return nil
 	}
 	for i := 0; i+1 < len(mapping.Content); i += 2 {
 		if mapping.Content[i].Value == key {
 			return mapping.Content[i+1]
 		}
 	}
 	return nil
 }
 func normalizeHelmDigest(value string) (string, bool) {
 	digest := strings.TrimPrefix(strings.ToLower(value), "sha256:")
 	if len(digest) != sha256HexLength {
 		return "", false
 	}
 	for _, char := range digest {
 		if (char < '0' || char > '9') && (char < 'a' || char > 'f') {
 			return "", false
 		}
 	}
 	return digest, true
 }
--- a/internal/handler/helm_test.go
+++ b/internal/handler/helm_test.go
@ -1,337 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 	upstreamhttp "github.com/git-pkgs/proxy/internal/httpclient"
 	"github.com/git-pkgs/proxy/internal/storage"
 	"github.com/git-pkgs/registries/fetch"
 	"gopkg.in/yaml.v3"
 )
 func TestHelmHandler_RewritesIndexAndCachesChart(t *testing.T) {
 	chart := []byte("a Helm chart")
 	digest := helmSHA256Hex(chart)
 	var available atomic.Bool
 	available.Store(true)
 	var indexRequests atomic.Int32
 	var chartRequests atomic.Int32
 	var upstream *httptest.Server
 	upstream = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		switch r.URL.Path {
 		case "/charts/index.yaml":
 			indexRequests.Add(1)
 			w.Header().Set("Content-Type", "application/x-yaml")
 			_, _ = fmt.Fprintf(w, `apiVersion: v1
 entries:
  demo:
    - annotations:
        example.com/retained: "true"
      created: 2020-01-02T03:04:05Z
      digest: %s
      name: demo
      urls:
        - demo-1.0.0.tgz
        - %s/charts/mirror/demo-1.0.0.tgz
      version: 1.0.0
 generated: 2020-01-02T03:04:05Z
 `, digest, upstream.URL)
 		case "/charts/demo-1.0.0.tgz", "/charts/mirror/demo-1.0.0.tgz":
 			chartRequests.Add(1)
 			w.Header().Set("Content-Type", "application/gzip")
 			_, _ = w.Write(chart)
 		default:
 			http.NotFound(w, r)
 		}
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewHelmHandler(proxy, "http://proxy.example", map[string]string{"stable": upstream.URL + "/charts"})
 	indexResponse := serveHelmRequest(h, "/stable/index.yaml")
 	if indexResponse.Code != http.StatusOK {
 		t.Fatalf("index status = %d, want 200: %s", indexResponse.Code, indexResponse.Body.String())
 	}
 	if got := indexResponse.Header().Get("Content-Type"); got != "application/x-yaml" {
 		t.Errorf("index Content-Type = %q, want application/x-yaml", got)
 	}
 	if strings.Contains(indexResponse.Body.String(), upstream.URL) {
 		t.Errorf("rewritten index contains upstream URL: %s", indexResponse.Body.String())
 	}
 	if !strings.Contains(indexResponse.Body.String(), "example.com/retained") {
 		t.Errorf("rewritten index lost an unrelated field: %s", indexResponse.Body.String())
 	}
 	var index map[string]any
 	if err := yaml.Unmarshal(indexResponse.Body.Bytes(), &index); err != nil {
 		t.Fatalf("parse rewritten index: %v", err)
 	}
 	entries := index["entries"].(map[string]any)
 	release := entries["demo"].([]any)[0].(map[string]any)
 	urls := release["urls"].([]any)
 	wantURL := "http://proxy.example/helm/stable/charts/" + digest + "/demo-1.0.0.tgz"
 	for _, rawURL := range urls {
 		if rawURL != wantURL {
 			t.Errorf("rewritten URL = %q, want %q", rawURL, wantURL)
 		}
 	}
 	firstChart := serveHelmRequest(h, "/stable/charts/"+digest+"/demo-1.0.0.tgz")
 	if firstChart.Code != http.StatusOK {
 		t.Fatalf("chart status = %d, want 200: %s", firstChart.Code, firstChart.Body.String())
 	}
 	if got := firstChart.Body.String(); got != string(chart) {
 		t.Errorf("chart body = %q, want %q", got, chart)
 	}
 	if got := firstChart.Header().Get("Content-Type"); got != "application/gzip" {
 		t.Errorf("chart Content-Type = %q, want application/gzip", got)
 	}
 	// Artifact cache availability must not depend on metadata caching or a
 	// reachable index upstream.
 	proxy.CacheMetadata = false
 	available.Store(false)
 	cachedChart := serveHelmRequest(h, "/stable/charts/"+digest+"/demo-1.0.0.tgz")
 	if cachedChart.Code != http.StatusOK {
 		t.Fatalf("cached chart status = %d, want 200: %s", cachedChart.Code, cachedChart.Body.String())
 	}
 	if got := cachedChart.Body.String(); got != string(chart) {
 		t.Errorf("cached chart body = %q, want %q", got, chart)
 	}
 	if got := indexRequests.Load(); got != 1 {
 		t.Errorf("index requests = %d, want 1", got)
 	}
 	if got := chartRequests.Load(); got != 1 {
 		t.Errorf("chart requests = %d, want 1", got)
 	}
 }
 func TestHelmHandler_RejectsChartDigestMismatch(t *testing.T) {
 	chart := []byte("tampered chart")
 	digest := helmSHA256Hex([]byte("expected chart"))
 	requests := 0
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
 		case "/index.yaml":
 			_, _ = fmt.Fprintf(w, "apiVersion: v1\nentries:\n  demo:\n    - digest: %s\n      urls: [demo.tgz]\n", digest)
 		case "/demo.tgz":
 			requests++
 			_, _ = w.Write(chart)
 		default:
 			http.NotFound(w, r)
 		}
 	}))
 	defer upstream.Close()
 	proxy, _, store, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(upstream.Client()), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewHelmHandler(proxy, "http://proxy.example", map[string]string{"test": upstream.URL})
 	for range 2 {
 		response := serveHelmRequest(h, "/test/charts/"+digest+"/demo.tgz")
 		if response.Code != http.StatusBadGateway {
 			t.Errorf("status = %d, want 502: %s", response.Code, response.Body.String())
 		}
 	}
 	if requests != 2 {
 		t.Errorf("chart requests = %d, want 2 after invalid cache entry is cleared", requests)
 	}
 	storagePath := storage.ArtifactPath(helmMetadataEcosystem, "", "test", digest, "demo.tgz")
 	if exists, err := store.Exists(t.Context(), storagePath); err != nil {
 		t.Fatalf("checking rejected chart storage: %v", err)
 	} else if exists {
 		t.Errorf("rejected chart remains in storage at %q", storagePath)
 	}
 }
 func TestHelmHandler_IndexCacheChangesWithUpstreamURL(t *testing.T) {
 	firstDigest := strings.Repeat("a", sha256HexLength)
 	secondDigest := strings.Repeat("b", sha256HexLength)
 	firstRequests := 0
 	secondRequests := 0
 	first := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		firstRequests++
 		_, _ = fmt.Fprintf(w, "apiVersion: v1\nentries:\n  demo:\n    - digest: %s\n      urls: [demo.tgz]\n", firstDigest)
 	}))
 	defer first.Close()
 	second := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		secondRequests++
 		_, _ = fmt.Fprintf(w, "apiVersion: v1\nentries:\n  demo:\n    - digest: %s\n      urls: [demo.tgz]\n", secondDigest)
 	}))
 	defer second.Close()
 	proxy, db, store, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = first.Client()
 	firstHandler := NewHelmHandler(proxy, "http://proxy.example", map[string]string{"stable": first.URL})
 	if response := serveHelmRequest(firstHandler, "/stable/index.yaml"); response.Code != http.StatusOK {
 		t.Fatalf("first index status = %d, want 200: %s", response.Code, response.Body.String())
 	}
 	// Model a restarted server with the same database and storage but a changed
 	// repository URL. Its cache key must not reuse the previous index or ETag.
 	restartedProxy := NewProxy(db, store, &mockFetcher{}, fetch.NewResolver(), nil)
 	restartedProxy.CacheMetadata = true
 	restartedProxy.MetadataTTL = time.Hour
 	restartedProxy.HTTPClient = second.Client()
 	secondHandler := NewHelmHandler(restartedProxy, "http://proxy.example", map[string]string{"stable": second.URL})
 	response := serveHelmRequest(secondHandler, "/stable/index.yaml")
 	if response.Code != http.StatusOK {
 		t.Fatalf("second index status = %d, want 200: %s", response.Code, response.Body.String())
 	}
 	if !strings.Contains(response.Body.String(), secondDigest) {
 		t.Errorf("second index did not use the new upstream: %s", response.Body.String())
 	}
 	if firstRequests != 1 {
 		t.Errorf("first upstream requests = %d, want 1", firstRequests)
 	}
 	if secondRequests != 1 {
 		t.Errorf("second upstream requests = %d, want 1", secondRequests)
 	}
 }
 func TestHelmHandler_UsesConfiguredUpstreamAuthentication(t *testing.T) {
 	chart := []byte("private Helm chart")
 	digest := helmSHA256Hex(chart)
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Header.Get("Authorization") != "Bearer private-token" {
 			http.Error(w, "unauthorized", http.StatusUnauthorized)
 			return
 		}
 		switch r.URL.Path {
 		case "/index.yaml":
 			_, _ = fmt.Fprintf(w, "apiVersion: v1\nentries:\n  demo:\n    - digest: %s\n      urls: [demo.tgz]\n", digest)
 		case "/demo.tgz":
 			_, _ = w.Write(chart)
 		default:
 			http.NotFound(w, r)
 		}
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	authClient := &http.Client{Transport: upstreamhttp.NewTransport(http.DefaultTransport,
 		upstreamhttp.AuthFunc(func(string) (string, string) {
 			return "Authorization", "Bearer private-token"
 		}))}
 	proxy.HTTPClient = authClient
 	fetcher := fetch.NewFetcher(fetch.WithHTTPClient(authClient), fetch.WithMaxRetries(0))
 	proxy.Fetcher = fetcher
 	t.Cleanup(func() { _ = fetcher.Close() })
 	h := NewHelmHandler(proxy, "http://proxy.example", map[string]string{"private": upstream.URL})
 	response := serveHelmRequest(h, "/private/charts/"+digest+"/demo.tgz")
 	if response.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", response.Code, response.Body.String())
 	}
 	if got := response.Body.String(); got != string(chart) {
 		t.Errorf("body = %q, want %q", got, chart)
 	}
 }
 func TestHelmHandler_FiltersNewChartsFromIndex(t *testing.T) {
 	oldDigest := strings.Repeat("a", 64)
 	newDigest := strings.Repeat("b", 64)
 	proxy := &Proxy{Cooldown: &cooldown.Config{Default: "3d"}}
 	h := NewHelmHandler(proxy, "http://proxy.example", map[string]string{"test": "https://charts.example"})
 	body := fmt.Sprintf(`apiVersion: v1
 entries:
  demo:
    - created: %s
      digest: %s
      urls: [demo-old.tgz]
    - created: %s
      digest: %s
      urls: [demo-new.tgz]
 `, time.Now().Add(-10*24*time.Hour).Format(time.RFC3339), oldDigest,
 		time.Now().Add(-time.Hour).Format(time.RFC3339), newDigest)
 	rewritten, err := h.rewriteIndex("test", "https://charts.example", []byte(body))
 	if err != nil {
 		t.Fatalf("rewriteIndex() error = %v", err)
 	}
 	if strings.Contains(string(rewritten), newDigest) {
 		t.Errorf("rewritten index includes a chart still in cooldown: %s", rewritten)
 	}
 	if !strings.Contains(string(rewritten), oldDigest) {
 		t.Errorf("rewritten index omitted an old chart: %s", rewritten)
 	}
 }
 func TestNormalizeHelmDigest(t *testing.T) {
 	digest := strings.Repeat("a", 64)
 	for _, input := range []string{digest, "sha256:" + digest, "SHA256:" + strings.ToUpper(digest)} {
 		if got, ok := normalizeHelmDigest(input); !ok || got != digest {
 			t.Errorf("normalizeHelmDigest(%q) = %q, %t; want %q, true", input, got, ok, digest)
 		}
 	}
 	if _, ok := normalizeHelmDigest("bad"); ok {
 		t.Error("normalizeHelmDigest accepted an invalid digest")
 	}
 }
 func TestHelmIndexEntriesRejectsIncompleteMapping(t *testing.T) {
 	entries := &yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
 			{Kind: yaml.ScalarNode, Value: "demo"},
 		},
 	}
 	document := &yaml.Node{
 		Kind: yaml.DocumentNode,
 		Content: []*yaml.Node{{
 			Kind: yaml.MappingNode,
 			Content: []*yaml.Node{
 				{Kind: yaml.ScalarNode, Value: "entries"},
 				entries,
 			},
 		}},
 	}
 	if _, err := helmIndexEntries(document); err == nil {
 		t.Fatal("helmIndexEntries() error = nil, want incomplete mapping error")
 	}
 }
 func serveHelmRequest(h *HelmHandler, target string) *httptest.ResponseRecorder {
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodGet, target, nil))
 	return w
 }
 func helmSHA256Hex(data []byte) string {
 	digest := sha256.Sum256(data)
 	return hex.EncodeToString(digest[:])
 }
--- a/internal/handler/hex.go
+++ b/internal/handler/hex.go
@ -1,16 +1,10 @@
 package handler
 import (
 	"bytes"
 	"compress/gzip"
 	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
 	"strings"
 	"time"
 	"google.golang.org/protobuf/encoding/protowire"
 )
 const (
@ -21,7 +15,6 @@ const (
 type HexHandler struct {
 	proxy       *Proxy
 	upstreamURL string
 	apiURL      string
 	proxyURL    string
 }
@ -30,20 +23,10 @@ func NewHexHandler(proxy *Proxy, proxyURL string) *HexHandler {
 	return &HexHandler{
 		proxy:       proxy,
 		upstreamURL: hexUpstream,
 		apiURL:      hexAPIURL,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 }
 // NewHexHandlerWithUpstreams creates a Hex handler with custom repository and
 // API upstreams.
 func NewHexHandlerWithUpstreams(proxy *Proxy, proxyURL, upstreamURL, apiURL string) *HexHandler {
 	h := NewHexHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, hexUpstream)
 	h.apiURL = configuredUpstreamURL(apiURL, hexAPIURL)
 	return h
 }
 // Routes returns the HTTP handler for Hex requests.
 func (h *HexHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
@ -51,10 +34,10 @@ func (h *HexHandler) Routes() http.Handler {
 	// Package tarballs (cache these)
 	mux.HandleFunc("GET /tarballs/{filename}", h.handleDownload)
-	// Registry resources (cached for offline)
+	// Registry resources (proxy without caching)
-	mux.HandleFunc("GET /names", h.proxyCached)
+	mux.HandleFunc("GET /names", h.proxyUpstream)
-	mux.HandleFunc("GET /versions", h.proxyCached)
+	mux.HandleFunc("GET /versions", h.proxyUpstream)
-	mux.HandleFunc("GET /packages/{name}", h.handlePackages)
+	mux.HandleFunc("GET /packages/{name}", h.proxyUpstream)
 	// Public keys
 	mux.HandleFunc("GET /public_key", h.proxyUpstream)
@ -64,14 +47,30 @@ func (h *HexHandler) Routes() http.Handler {
 // handleDownload serves a package tarball, fetching and caching from upstream if needed.
 func (h *HexHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
-	h.proxy.handleFilenameDownload(w, r, filenameDownload{
+	filename := r.PathValue("filename")
-		ecosystem:   "hex",
+	if filename == "" || !strings.HasSuffix(filename, ".tar") {
-		upstreamURL: h.upstreamURL,
+		http.Error(w, "invalid filename", http.StatusBadRequest)
-		suffix:      ".tar",
+		return
-		parseErr:    "could not parse tarball filename",
+	}
-		fetchErr:    "failed to fetch package",
+
-		parse:       h.parseTarballFilename,
+	// Extract name and version from filename (e.g., "phoenix-1.7.10.tar")
-	})
+	name, version := h.parseTarballFilename(filename)
 	if name == "" || version == "" {
 		http.Error(w, "could not parse tarball filename", http.StatusBadRequest)
 		return
 	}
 	h.proxy.Logger.Info("hex download request",
 		"name", name, "version", version, "filename", filename)
 	result, err := h.proxy.GetOrFetchArtifact(r.Context(), "hex", name, version, filename)
 	if err != nil {
 		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
 	ServeArtifact(w, result)
 }
 // parseTarballFilename extracts name and version from a hex tarball filename.
@ -88,336 +87,42 @@ func (h *HexHandler) parseTarballFilename(filename string) (name, version string
 	return "", ""
 }
-// hexAPIURL is the Hex HTTP API base URL for fetching package metadata with timestamps.
+// proxyUpstream forwards a request to hex.pm without caching.
-const hexAPIURL = "https://hex.pm"
+func (h *HexHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	upstreamURL := h.upstreamURL + r.URL.Path
-// handlePackages proxies the /packages/{name} endpoint, applying cooldown filtering
+	h.proxy.Logger.Debug("proxying to upstream", "url", upstreamURL)
-// when enabled. Since the protobuf format has no timestamps, we fetch them from the
+
-// Hex HTTP API concurrently.
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
-func (h *HexHandler) handlePackages(w http.ResponseWriter, r *http.Request) {
+	if err != nil {
-	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
+		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		h.proxyCached(w, r)
 		return
 	}
-	name := r.PathValue("name")
+	// Copy accept header for content negotiation
-	if name == "" {
+	if accept := r.Header.Get("Accept"); accept != "" {
-		h.proxyCached(w, r)
+		req.Header.Set("Accept", accept)
 		return
 	}
-	h.proxy.Logger.Info("hex package request with cooldown", "name", name)
+	resp, err := http.DefaultClient.Do(req)
 	protoResp, filteredVersions, err := h.fetchPackageAndVersions(r, name)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = protoResp.Body.Close() }()
 	if protoResp.StatusCode != http.StatusOK {
 		for k, vv := range protoResp.Header {
 			for _, v := range vv {
 				w.Header().Add(k, v)
 			}
 		}
 		w.WriteHeader(protoResp.StatusCode)
 		_, _ = io.Copy(w, protoResp.Body)
 		return
 	}
 	body, err := io.ReadAll(protoResp.Body)
 	if err != nil {
 		http.Error(w, "failed to read response", http.StatusInternalServerError)
 		return
 	}
 	if len(filteredVersions) == 0 {
 		// No versions to filter or couldn't get timestamps, pass through
 		w.Header().Set(headerContentType, protoResp.Header.Get(headerContentType))
 		w.Header().Set("Content-Encoding", "gzip")
 		_, _ = w.Write(body)
 		return
 	}
 	filtered, err := h.filterSignedPackage(body, filteredVersions)
 	if err != nil {
 		h.proxy.Logger.Warn("failed to filter hex package, proxying original", "error", err)
 		w.Header().Set(headerContentType, protoResp.Header.Get(headerContentType))
 		w.Header().Set("Content-Encoding", "gzip")
 		_, _ = w.Write(body)
 		return
 	}
 	w.Header().Set(headerContentType, "application/octet-stream")
 	w.Header().Set("Content-Encoding", "gzip")
 	_, _ = w.Write(filtered)
 }
 // fetchPackageAndVersions fetches the protobuf package and version timestamps concurrently.
 func (h *HexHandler) fetchPackageAndVersions(r *http.Request, name string) (*http.Response, map[string]bool, error) {
 	type versionsResult struct {
 		filtered map[string]bool
 		err      error
 	}
 	versionsCh := make(chan versionsResult, 1)
 	go func() {
 		filtered, err := h.fetchFilteredVersions(r, name)
 		versionsCh <- versionsResult{filtered: filtered, err: err}
 	}()
 	protoResp, err := h.fetchUpstreamPackage(r, name)
 	versionsRes := <-versionsCh
 	if err != nil {
 		return nil, nil, err
 	}
 	if versionsRes.err != nil {
 		h.proxy.Logger.Warn("failed to fetch hex version timestamps, proxying unfiltered",
 			"name", name, "error", versionsRes.err)
 		return protoResp, nil, nil
 	}
 	return protoResp, versionsRes.filtered, nil
 }
 // fetchUpstreamPackage fetches the protobuf package from upstream.
 func (h *HexHandler) fetchUpstreamPackage(r *http.Request, name string) (*http.Response, error) {
 	upstreamURL := h.upstreamURL + "/packages/" + name
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		return nil, err
 	}
 	return h.proxy.HTTPClient.Do(req)
 }
 // hexRelease represents a version entry from the Hex API.
 type hexRelease struct {
 	Version    string `json:"version"`
 	InsertedAt string `json:"inserted_at"`
 }
 // hexPackageAPI represents the Hex API response for a package.
 type hexPackageAPI struct {
 	Releases []hexRelease `json:"releases"`
 }
 // fetchFilteredVersions fetches the Hex API and returns a set of version
 // strings that should be filtered out by cooldown.
 func (h *HexHandler) fetchFilteredVersions(r *http.Request, name string) (map[string]bool, error) {
 	apiURL := fmt.Sprintf("%s/api/packages/%s", h.apiURL, name)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, apiURL, nil)
 	if err != nil {
 		return nil, err
 	}
 	req.Header.Set("Accept", "application/json")
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		return nil, err
 	}
 	defer func() { _ = resp.Body.Close() }()
-	if resp.StatusCode != http.StatusOK {
+	// Copy response headers
-		return nil, fmt.Errorf("hex API returned %d", resp.StatusCode)
+	for k, vv := range resp.Header {
-	}
+		for _, v := range vv {
-
+			w.Header().Add(k, v)
 	var pkg hexPackageAPI
 	if err := json.NewDecoder(resp.Body).Decode(&pkg); err != nil {
 		return nil, err
 	}
 	packagePURL := canonicalPackagePURL("hex", name)
 	filtered := make(map[string]bool)
 	for _, release := range pkg.Releases {
 		insertedAt, err := time.Parse(time.RFC3339Nano, release.InsertedAt)
 		if err != nil {
 			continue
 		}
 		if !h.proxy.Cooldown.IsAllowed("hex", packagePURL, insertedAt) {
 			filtered[release.Version] = true
 			h.proxy.Logger.Info("cooldown: filtering hex version",
 				"package", name, "version", release.Version,
 				"published", release.InsertedAt)
 		}
 	}
-	return filtered, nil
+	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
-// filterSignedPackage decompresses gzipped data, decodes the Signed protobuf wrapper,
+func init() {
-// filters releases from the Package payload, and re-encodes as gzipped protobuf
+	_ = fmt.Sprintf // silence import if unused
 // (without the original signature since the payload has changed).
 func (h *HexHandler) filterSignedPackage(gzippedData []byte, filteredVersions map[string]bool) ([]byte, error) {
 	// Decompress gzip
 	gr, err := gzip.NewReader(bytes.NewReader(gzippedData))
 	if err != nil {
 		return nil, err
 	}
 	signed, err := io.ReadAll(gr)
 	if err != nil {
 		return nil, err
 	}
 	_ = gr.Close()
 	// Parse Signed message: field 1 = payload (bytes), field 2 = signature (bytes)
 	payload, err := extractProtobufBytes(signed, 1)
 	if err != nil {
 		return nil, fmt.Errorf("extracting payload: %w", err)
 	}
 	// Filter releases from the Package message
 	filteredPayload, err := filterPackageReleases(payload, filteredVersions)
 	if err != nil {
 		return nil, fmt.Errorf("filtering releases: %w", err)
 	}
 	// Re-encode Signed message with modified payload and no signature
 	var newSigned []byte
 	newSigned = protowire.AppendTag(newSigned, 1, protowire.BytesType)
 	newSigned = protowire.AppendBytes(newSigned, filteredPayload)
 	// Gzip compress
 	var buf bytes.Buffer
 	gw := gzip.NewWriter(&buf)
 	if _, err := gw.Write(newSigned); err != nil {
 		return nil, err
 	}
 	if err := gw.Close(); err != nil {
 		return nil, err
 	}
 	return buf.Bytes(), nil
 }
 // filterPackageReleases filters releases from a Package protobuf message.
 // Package: field 1 = releases (repeated), field 2 = name, field 3 = repository
 func filterPackageReleases(payload []byte, filteredVersions map[string]bool) ([]byte, error) {
 	var result []byte
 	data := payload
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			return nil, fmt.Errorf("invalid protobuf tag")
 		}
 		tagBytes := data[:n]
 		data = data[n:]
 		var fieldBytes []byte
 		switch wtype {
 		case protowire.BytesType:
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				return nil, fmt.Errorf("invalid protobuf bytes field")
 			}
 			fieldBytes = data[:vn]
 			data = data[vn:]
 			if num == 1 { // releases field
 				version := extractReleaseVersion(v)
 				if filteredVersions[version] {
 					continue // skip this release
 				}
 			}
 		case protowire.VarintType:
 			_, vn := protowire.ConsumeVarint(data)
 			if vn < 0 {
 				return nil, fmt.Errorf("invalid protobuf varint")
 			}
 			fieldBytes = data[:vn]
 			data = data[vn:]
 		default:
 			return nil, fmt.Errorf("unexpected wire type %d", wtype)
 		}
 		result = append(result, tagBytes...)
 		result = append(result, fieldBytes...)
 	}
 	return result, nil
 }
 // extractReleaseVersion extracts the version string from a Release protobuf message.
 // Release: field 1 = version (string)
 func extractReleaseVersion(release []byte) string {
 	data := release
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			return ""
 		}
 		data = data[n:]
 		switch wtype {
 		case protowire.BytesType:
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				return ""
 			}
 			if num == 1 {
 				return string(v)
 			}
 			data = data[vn:]
 		case protowire.VarintType:
 			_, vn := protowire.ConsumeVarint(data)
 			if vn < 0 {
 				return ""
 			}
 			data = data[vn:]
 		default:
 			return ""
 		}
 	}
 	return ""
 }
 // extractProtobufBytes extracts a bytes field from a protobuf message by field number.
 func extractProtobufBytes(data []byte, fieldNum protowire.Number) ([]byte, error) {
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			return nil, fmt.Errorf("invalid protobuf tag")
 		}
 		data = data[n:]
 		switch wtype {
 		case protowire.BytesType:
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				return nil, fmt.Errorf("invalid protobuf bytes")
 			}
 			if num == fieldNum {
 				return v, nil
 			}
 			data = data[vn:]
 		case protowire.VarintType:
 			_, vn := protowire.ConsumeVarint(data)
 			if vn < 0 {
 				return nil, fmt.Errorf("invalid protobuf varint")
 			}
 			data = data[vn:]
 		default:
 			return nil, fmt.Errorf("unexpected wire type %d", wtype)
 		}
 	}
 	return nil, fmt.Errorf("field %d not found", fieldNum)
 }
 // proxyCached forwards a request with metadata caching.
 func (h *HexHandler) proxyCached(w http.ResponseWriter, r *http.Request) {
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	h.proxy.ProxyCached(w, r, h.upstreamURL+r.URL.Path, "hex", cacheKey, "*/*")
 }
 // proxyUpstream forwards a request to hex.pm without caching.
 func (h *HexHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, []string{"Accept"})
 }
--- a/internal/handler/hex_test.go
+++ b/internal/handler/hex_test.go
@ -1,18 +1,8 @@
 package handler
 import (
 	"bytes"
 	"compress/gzip"
 	"encoding/json"
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 	"google.golang.org/protobuf/encoding/protowire"
 )
 func TestHexParseTarballFilename(t *testing.T) {
@ -37,290 +27,3 @@ func TestHexParseTarballFilename(t *testing.T) {
 		}
 	}
 }
 // buildHexRelease encodes a Release protobuf message.
 func buildHexRelease(version string) []byte {
 	var release []byte
 	// field 1 = version (string)
 	release = protowire.AppendTag(release, 1, protowire.BytesType)
 	release = protowire.AppendString(release, version)
 	// field 2 = inner_checksum (bytes) - required
 	release = protowire.AppendTag(release, 2, protowire.BytesType)
 	release = protowire.AppendBytes(release, []byte("fakechecksum1234567890123456789012"))
 	// field 5 = outer_checksum (bytes)
 	release = protowire.AppendTag(release, 5, protowire.BytesType)
 	release = protowire.AppendBytes(release, []byte("outerchecksum123456789012345678901"))
 	return release
 }
 // buildHexPackage encodes a Package protobuf message.
 func buildHexPackage(name string, versions []string) []byte {
 	var pkg []byte
 	for _, v := range versions {
 		release := buildHexRelease(v)
 		pkg = protowire.AppendTag(pkg, 1, protowire.BytesType)
 		pkg = protowire.AppendBytes(pkg, release)
 	}
 	// field 2 = name
 	pkg = protowire.AppendTag(pkg, 2, protowire.BytesType)
 	pkg = protowire.AppendString(pkg, name)
 	// field 3 = repository
 	pkg = protowire.AppendTag(pkg, 3, protowire.BytesType)
 	pkg = protowire.AppendString(pkg, "hexpm")
 	return pkg
 }
 // buildHexSigned wraps a payload in a Signed protobuf message and gzips it.
 func buildHexSigned(payload []byte) []byte {
 	var signed []byte
 	signed = protowire.AppendTag(signed, 1, protowire.BytesType)
 	signed = protowire.AppendBytes(signed, payload)
 	// field 2 = signature (optional, add a fake one)
 	signed = protowire.AppendTag(signed, 2, protowire.BytesType)
 	signed = protowire.AppendBytes(signed, []byte("fakesignature"))
 	var buf bytes.Buffer
 	gw := gzip.NewWriter(&buf)
 	_, _ = gw.Write(signed)
 	_ = gw.Close()
 	return buf.Bytes()
 }
 func TestHexFilterPackageReleases(t *testing.T) {
 	pkg := buildHexPackage("phoenix", []string{testVersion100, "2.0.0", "3.0.0"})
 	filtered, err := filterPackageReleases(pkg, map[string]bool{"2.0.0": true})
 	if err != nil {
 		t.Fatal(err)
 	}
 	// Extract remaining versions
 	var versions []string
 	data := filtered
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			break
 		}
 		data = data[n:]
 		switch wtype {
 		case protowire.BytesType:
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				break
 			}
 			if num == 1 { // release field
 				version := extractReleaseVersion(v)
 				if version != "" {
 					versions = append(versions, version)
 				}
 			}
 			data = data[vn:]
 		case protowire.VarintType:
 			_, vn := protowire.ConsumeVarint(data)
 			if vn < 0 {
 				break
 			}
 			data = data[vn:]
 		}
 	}
 	if len(versions) != 2 {
 		t.Fatalf("expected 2 versions, got %d: %v", len(versions), versions)
 	}
 	if versions[0] != testVersion100 || versions[1] != "3.0.0" {
 		t.Errorf("expected [1.0.0, 3.0.0], got %v", versions)
 	}
 }
 func TestHexFilterSignedPackage(t *testing.T) {
 	pkg := buildHexPackage("phoenix", []string{testVersion100, "2.0.0"})
 	gzipped := buildHexSigned(pkg)
 	h := &HexHandler{
 		proxy:    testProxy(),
 		proxyURL: "http://proxy.local",
 	}
 	filtered, err := h.filterSignedPackage(gzipped, map[string]bool{"2.0.0": true})
 	if err != nil {
 		t.Fatal(err)
 	}
 	// Decompress and check
 	gr, err := gzip.NewReader(bytes.NewReader(filtered))
 	if err != nil {
 		t.Fatal(err)
 	}
 	signed, err := io.ReadAll(gr)
 	if err != nil {
 		t.Fatal(err)
 	}
 	payload, err := extractProtobufBytes(signed, 1)
 	if err != nil {
 		t.Fatal(err)
 	}
 	// Check that only version 1.0.0 remains
 	version := extractReleaseVersion(mustExtractFirstRelease(t, payload))
 	if version != testVersion100 {
 		t.Errorf("expected version 1.0.0, got %s", version)
 	}
 	// Verify no signature in the output
 	_, err = extractProtobufBytes(signed, 2)
 	if err == nil {
 		t.Error("expected no signature in filtered output")
 	}
 }
 func mustExtractFirstRelease(t *testing.T, payload []byte) []byte {
 	t.Helper()
 	data := payload
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			t.Fatal("invalid protobuf")
 		}
 		data = data[n:]
 		if wtype == protowire.BytesType {
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				t.Fatal("invalid bytes")
 			}
 			if num == 1 {
 				return v
 			}
 			data = data[vn:]
 		}
 	}
 	t.Fatal("no release found")
 	return nil
 }
 func TestHexExtractReleaseVersion(t *testing.T) {
 	release := buildHexRelease("1.2.3")
 	version := extractReleaseVersion(release)
 	if version != "1.2.3" {
 		t.Errorf("expected 1.2.3, got %s", version)
 	}
 }
 func TestHexHandlePackagesWithCooldown(t *testing.T) {
 	now := time.Now()
 	oldTime := now.Add(-7 * 24 * time.Hour).Format(time.RFC3339Nano)
 	recentTime := now.Add(-1 * time.Hour).Format(time.RFC3339Nano)
 	pkg := buildHexPackage("testpkg", []string{testVersion100, "2.0.0"})
 	gzippedProto := buildHexSigned(pkg)
 	apiJSON, _ := json.Marshal(hexPackageAPI{
 		Releases: []hexRelease{
 			{Version: testVersion100, InsertedAt: oldTime},
 			{Version: "2.0.0", InsertedAt: recentTime},
 		},
 	})
 	// Serve both the protobuf repo and the JSON API from the same test server
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
 		case "/packages/testpkg":
 			w.Header().Set("Content-Encoding", "gzip")
 			_, _ = w.Write(gzippedProto)
 		case "/api/packages/testpkg":
 			w.Header().Set("Content-Type", "application/json")
 			_, _ = w.Write(apiJSON)
 		default:
 			w.WriteHeader(http.StatusNotFound)
 		}
 	}))
 	defer upstream.Close()
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default: "3d",
 	}
 	// Override hexAPIURL for testing by using the upstream URL
 	h := &HexHandler{
 		proxy:       proxy,
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	// We need to override the API URL - but it's a const. Let's test via the lower-level methods instead.
 	// Test fetchFilteredVersions by making a request to the API endpoint
 	// Actually, let me test the full flow through handlePackages
 	req := httptest.NewRequest(http.MethodGet, "/packages/testpkg", nil)
 	req.SetPathValue("name", "testpkg")
 	w := httptest.NewRecorder()
 	// Since hexAPIURL is a const pointing to hex.pm, we can't easily override it in tests.
 	// Instead test the protobuf filtering directly which is the core logic.
 	filtered, err := h.filterSignedPackage(gzippedProto, map[string]bool{"2.0.0": true})
 	if err != nil {
 		t.Fatal(err)
 	}
 	// Verify only version 1.0.0 survives
 	gr, _ := gzip.NewReader(bytes.NewReader(filtered))
 	signed, _ := io.ReadAll(gr)
 	payload, _ := extractProtobufBytes(signed, 1)
 	var versions []string
 	data := payload
 	for len(data) > 0 {
 		num, wtype, n := protowire.ConsumeTag(data)
 		if n < 0 {
 			break
 		}
 		data = data[n:]
 		if wtype == protowire.BytesType {
 			v, vn := protowire.ConsumeBytes(data)
 			if vn < 0 {
 				break
 			}
 			if num == 1 {
 				if ver := extractReleaseVersion(v); ver != "" {
 					versions = append(versions, ver)
 				}
 			}
 			data = data[vn:]
 		}
 	}
 	if len(versions) != 1 || versions[0] != testVersion100 {
 		t.Errorf("expected [1.0.0], got %v", versions)
 	}
 	_ = w
 	_ = req
 }
 func TestHexHandlePackagesWithoutCooldown(t *testing.T) {
 	pkg := buildHexPackage("testpkg", []string{testVersion100})
 	gzipped := buildHexSigned(pkg)
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Encoding", "gzip")
 		_, _ = w.Write(gzipped)
 	}))
 	defer upstream.Close()
 	h := &HexHandler{
 		proxy:       testProxy(), // no cooldown
 		upstreamURL: upstream.URL,
 		proxyURL:    "http://proxy.local",
 	}
 	req := httptest.NewRequest(http.MethodGet, "/packages/testpkg", nil)
 	req.SetPathValue("name", "testpkg")
 	w := httptest.NewRecorder()
 	h.handlePackages(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 }
--- a/internal/handler/homebrew.go
+++ b/internal/handler/homebrew.go
@ -1,74 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"encoding/hex"
 	"net/http"
 	"strings"
 )
 const (
 	homebrewArtifactNamespace  = "homebrew"
 	homebrewArtifactRepository = "homebrew/core"
 	homebrewMetadataEcosystem  = "homebrew"
 )
 // HomebrewHandler proxies Homebrew's JSON API without modifying signed files.
 type HomebrewHandler struct {
 	proxy       *Proxy
 	apiUpstream string
 }
 // NewHomebrewHandler creates a Homebrew JSON API handler.
 func NewHomebrewHandler(proxy *Proxy, apiUpstream string) *HomebrewHandler {
 	return &HomebrewHandler{
 		proxy:       proxy,
 		apiUpstream: strings.TrimSuffix(apiUpstream, "/"),
 	}
 }
 // RegisterHomebrewArtifacts routes homebrew/core OCI requests to its configured
 // registry and blocks other homebrew repositories from reaching the default
 // OCI registry.
 func RegisterHomebrewArtifacts(container *ContainerHandler, artifactUpstream string) {
 	container.BlockRegistry(homebrewArtifactNamespace)
 	container.RegisterRegistry(homebrewArtifactRepository, artifactUpstream)
 }
 // Routes returns the Homebrew JSON API handler. Mount this at /homebrew.
 func (h *HomebrewHandler) Routes() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet && r.Method != http.MethodHead {
 			w.Header().Set("Allow", "GET, HEAD")
 			http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
 			return
 		}
 		requestPath := strings.TrimPrefix(r.URL.EscapedPath(), "/")
 		if requestPath == "" || containsPathTraversal(requestPath) {
 			http.NotFound(w, r)
 			return
 		}
 		upstreamURL := h.apiUpstream + "/" + requestPath
 		if r.URL.RawQuery != "" {
 			upstreamURL += "?" + r.URL.RawQuery
 		}
 		// brew fetches every JSON API download with `curl --compressed` and
 		// decodes Content-Encoding itself, and formula.jws.json is ~33 MB plain
 		// versus ~5 MB gzip, so keep both hops compressed. The analytics
 		// endpoints are the one consumer brew fetches without --compressed;
 		// they stay identity.
 		acceptEncoding := "gzip"
 		if strings.HasPrefix(requestPath, "analytics/") {
 			acceptEncoding = "identity"
 		}
 		h.proxy.proxyCachedWithEncoding(w, r, upstreamURL, homebrewMetadataEcosystem, homebrewMetadataCacheKey(requestPath, r.URL.RawQuery), acceptEncoding, "*/*")
 	})
 }
 func homebrewMetadataCacheKey(requestPath, rawQuery string) string {
 	sum := sha256.Sum256([]byte(requestPath + "\x00" + rawQuery))
 	return hex.EncodeToString(sum[:])
 }
--- a/internal/handler/homebrew_test.go
+++ b/internal/handler/homebrew_test.go
@ -1,458 +0,0 @@
 package handler
 import (
 	"bytes"
 	"io"
 	"net/http"
 	"net/http/httptest"
 	"strconv"
 	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
 	"github.com/git-pkgs/registries/fetch"
 )
 func TestHomebrewHandler_PreservesSignedResponseAndClientValidators(t *testing.T) {
 	body := " {\n  \"payload\": \"signed bytes\",\n  \"signatures\": []\n}\n"
 	etag := `"homebrew-api-etag"`
 	lastModified := time.Date(2026, time.August, 14, 9, 30, 0, 0, time.UTC)
 	requests := 0
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		requests++
 		if r.Method != http.MethodGet {
 			t.Errorf("upstream method = %s, want GET", r.Method)
 		}
 		if r.URL.Path != "/api/internal/packages.arm64_tahoe.jws.json" {
 			t.Errorf("upstream path = %q", r.URL.Path)
 		}
 		if got := r.Header.Get("Authorization"); got != "" {
 			t.Errorf("upstream Authorization = %q, want empty", got)
 		}
 		if got := r.Header.Get("Cookie"); got != "" {
 			t.Errorf("upstream Cookie = %q, want empty", got)
 		}
 		w.Header().Set("Content-Type", "application/json")
 		w.Header().Set("ETag", etag)
 		w.Header().Set("Last-Modified", lastModified.Format(http.TimeFormat))
 		_, _ = io.WriteString(w, body)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	req := httptest.NewRequest(http.MethodGet, "/internal/packages.arm64_tahoe.jws.json", nil)
 	req.Header.Set("Authorization", "Bearer client-secret")
 	req.Header.Set("Cookie", "session=client-secret")
 	w := httptest.NewRecorder()
 	h.ServeHTTP(w, req)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 	}
 	if got := w.Body.String(); got != body {
 		t.Errorf("body = %q, want byte-for-byte %q", got, body)
 	}
 	if got := w.Header().Get("Content-Type"); got != "application/json" {
 		t.Errorf("Content-Type = %q, want application/json", got)
 	}
 	wantContentLength := strconv.Itoa(len(body))
 	if got := w.Header().Get("Content-Length"); got != wantContentLength {
 		t.Errorf("Content-Length = %q, want %q", got, wantContentLength)
 	}
 	if got := w.Header().Get("ETag"); got != etag {
 		t.Errorf("ETag = %q, want %q", got, etag)
 	}
 	if got := w.Header().Get("Last-Modified"); got != lastModified.Format(http.TimeFormat) {
 		t.Errorf("Last-Modified = %q, want %q", got, lastModified.Format(http.TimeFormat))
 	}
 	conditionalRequest := httptest.NewRequest(http.MethodGet, "/internal/packages.arm64_tahoe.jws.json", nil)
 	conditionalRequest.Header.Set("If-None-Match", etag)
 	conditional := httptest.NewRecorder()
 	h.ServeHTTP(conditional, conditionalRequest)
 	if conditional.Code != http.StatusNotModified {
 		t.Fatalf("conditional status = %d, want %d", conditional.Code, http.StatusNotModified)
 	}
 	if got := conditional.Header().Get("ETag"); got != etag {
 		t.Errorf("conditional ETag = %q, want %q", got, etag)
 	}
 	if conditional.Body.Len() != 0 {
 		t.Errorf("conditional body length = %d, want 0", conditional.Body.Len())
 	}
 	modifiedSinceRequest := httptest.NewRequest(http.MethodGet, "/internal/packages.arm64_tahoe.jws.json", nil)
 	modifiedSinceRequest.Header.Set("If-Modified-Since", lastModified.Format(http.TimeFormat))
 	modifiedSince := httptest.NewRecorder()
 	h.ServeHTTP(modifiedSince, modifiedSinceRequest)
 	if modifiedSince.Code != http.StatusNotModified {
 		t.Fatalf("If-Modified-Since status = %d, want %d", modifiedSince.Code, http.StatusNotModified)
 	}
 	if got := modifiedSince.Header().Get("Last-Modified"); got != lastModified.Format(http.TimeFormat) {
 		t.Errorf("conditional Last-Modified = %q, want %q", got, lastModified.Format(http.TimeFormat))
 	}
 	if requests != 1 {
 		t.Errorf("upstream requests = %d, want 1", requests)
 	}
 }
 func TestHomebrewHandler_HeadUsesMetadataCacheAndSurvivesOutage(t *testing.T) {
 	body := `{"payload":"signed bytes","signatures":[]}`
 	available := true
 	requests := 0
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		requests++
 		if got := r.Header.Get("Authorization"); got != "" {
 			t.Errorf("upstream Authorization = %q, want empty", got)
 		}
 		if !available {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		w.Header().Set("Content-Type", "application/json")
 		w.Header().Set("ETag", `"head-etag"`)
 		_, _ = io.WriteString(w, body)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	coldRequest := httptest.NewRequest(http.MethodHead, "/formula.jws.json", nil)
 	coldRequest.Header.Set("Authorization", "Bearer client-secret")
 	cold := httptest.NewRecorder()
 	h.ServeHTTP(cold, coldRequest)
 	if cold.Code != http.StatusOK {
 		t.Fatalf("cold status = %d, want %d", cold.Code, http.StatusOK)
 	}
 	if cold.Body.Len() != 0 {
 		t.Errorf("cold body length = %d, want 0", cold.Body.Len())
 	}
 	if got := cold.Header().Get("Content-Length"); got != strconv.Itoa(len(body)) {
 		t.Errorf("Content-Length = %q, want %d", got, len(body))
 	}
 	if got := cold.Header().Get("ETag"); got != `"head-etag"` {
 		t.Errorf("ETag = %q, want %q", got, `"head-etag"`)
 	}
 	if requests != 1 {
 		t.Fatalf("cold upstream requests = %d, want 1", requests)
 	}
 	warm := httptest.NewRecorder()
 	h.ServeHTTP(warm, httptest.NewRequest(http.MethodHead, "/formula.jws.json", nil))
 	if warm.Code != http.StatusOK {
 		t.Fatalf("warm status = %d, want %d", warm.Code, http.StatusOK)
 	}
 	if warm.Body.Len() != 0 {
 		t.Errorf("warm body length = %d, want 0", warm.Body.Len())
 	}
 	if requests != 1 {
 		t.Errorf("warm upstream requests = %d, want 1", requests)
 	}
 	proxy.MetadataTTL = time.Nanosecond
 	available = false
 	stale := httptest.NewRecorder()
 	h.ServeHTTP(stale, httptest.NewRequest(http.MethodHead, "/formula.jws.json", nil))
 	if stale.Code != http.StatusOK {
 		t.Fatalf("stale status = %d, want %d; body: %s", stale.Code, http.StatusOK, stale.Body.String())
 	}
 	if stale.Body.Len() != 0 {
 		t.Errorf("stale body length = %d, want 0", stale.Body.Len())
 	}
 	if got := stale.Header().Get("Warning"); got != containerStaleWarning {
 		t.Errorf("Warning = %q, want %q", got, containerStaleWarning)
 	}
 }
 func TestHomebrewHandler_HeadWithoutMetadataCachePreservesUpstreamMethod(t *testing.T) {
 	upstreamMethod := ""
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		upstreamMethod = r.Method
 		w.Header().Set("Content-Type", "application/json")
 		w.Header().Set("Content-Length", "42")
 		w.Header().Set("ETag", `"head-etag"`)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = false
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	head := httptest.NewRecorder()
 	h.ServeHTTP(head, httptest.NewRequest(http.MethodHead, "/formula.jws.json", nil))
 	if head.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", head.Code, http.StatusOK)
 	}
 	if upstreamMethod != http.MethodHead {
 		t.Errorf("upstream method = %q, want HEAD", upstreamMethod)
 	}
 	if head.Body.Len() != 0 {
 		t.Errorf("body length = %d, want 0", head.Body.Len())
 	}
 	if got := head.Header().Get("Content-Length"); got != "42" {
 		t.Errorf("Content-Length = %q, want 42", got)
 	}
 }
 func TestHomebrewHandler_ServesStaleCachedResponseWhenUpstreamFails(t *testing.T) {
 	body := `{"payload":"signed bytes","signatures":[]}`
 	available := true
 	requests := 0
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		requests++
 		if !available {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		w.Header().Set("Content-Type", "application/json")
 		w.Header().Set("ETag", `"stale-etag"`)
 		_, _ = io.WriteString(w, body)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = 5 * time.Millisecond
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	first := httptest.NewRecorder()
 	h.ServeHTTP(first, httptest.NewRequest(http.MethodGet, "/formula.jws.json", nil))
 	if first.Code != http.StatusOK {
 		t.Fatalf("warm status = %d, want %d", first.Code, http.StatusOK)
 	}
 	time.Sleep(10 * time.Millisecond)
 	available = false
 	stale := httptest.NewRecorder()
 	h.ServeHTTP(stale, httptest.NewRequest(http.MethodGet, "/formula.jws.json", nil))
 	if stale.Code != http.StatusOK {
 		t.Fatalf("stale status = %d, want %d; body: %s", stale.Code, http.StatusOK, stale.Body.String())
 	}
 	if got := stale.Body.String(); got != body {
 		t.Errorf("stale body = %q, want %q", got, body)
 	}
 	if got := stale.Header().Get("Warning"); got != containerStaleWarning {
 		t.Errorf("Warning = %q, want %q", got, containerStaleWarning)
 	}
 	if requests != 2 {
 		t.Errorf("upstream requests = %d, want 2", requests)
 	}
 }
 func TestHomebrewHandler_ProxiesSupportedAPIPaths(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, _ = io.WriteString(w, r.URL.RequestURI())
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	paths := []string{
 		"/formula.jws.json",
 		"/cask.jws.json",
 		"/formula/jq.json",
 		"/cask/firefox.json",
 		"/internal/packages.arm64_tahoe.jws.json?download=1",
 	}
 	for _, requestPath := range paths {
 		t.Run(requestPath, func(t *testing.T) {
 			w := httptest.NewRecorder()
 			h.ServeHTTP(w, httptest.NewRequest(http.MethodGet, requestPath, nil))
 			if w.Code != http.StatusOK {
 				t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 			}
 			if got, want := w.Body.String(), "/api"+requestPath; got != want {
 				t.Errorf("upstream request = %q, want %q", got, want)
 			}
 		})
 	}
 }
 func TestHomebrewHandler_RejectsUnsupportedRequests(t *testing.T) {
 	proxy, _, _, _ := setupTestProxy(t)
 	h := NewHomebrewHandler(proxy, "https://example.test/api").Routes()
 	method := httptest.NewRecorder()
 	h.ServeHTTP(method, httptest.NewRequest(http.MethodPost, "/formula.jws.json", nil))
 	if method.Code != http.StatusMethodNotAllowed {
 		t.Errorf("POST status = %d, want %d", method.Code, http.StatusMethodNotAllowed)
 	}
 	if got := method.Header().Get("Allow"); got != "GET, HEAD" {
 		t.Errorf("Allow = %q, want GET, HEAD", got)
 	}
 	root := httptest.NewRecorder()
 	h.ServeHTTP(root, httptest.NewRequest(http.MethodGet, "/", nil))
 	if root.Code != http.StatusNotFound {
 		t.Errorf("root status = %d, want %d", root.Code, http.StatusNotFound)
 	}
 	traversal := httptest.NewRecorder()
 	h.ServeHTTP(traversal, httptest.NewRequest(http.MethodGet, "/%2e%2e/secret", nil))
 	if traversal.Code != http.StatusNotFound {
 		t.Errorf("traversal status = %d, want %d", traversal.Code, http.StatusNotFound)
 	}
 }
 func TestRegisterHomebrewArtifacts(t *testing.T) {
 	h := &ContainerHandler{registryURL: dockerHubRegistry}
 	artifactUpstream := "https://homebrew-proxy.example.com"
 	RegisterHomebrewArtifacts(h, artifactUpstream+"/")
 	if got := h.registryURLFor("homebrew/core/jq"); got != artifactUpstream {
 		t.Errorf("homebrew/core registry = %q, want %q", got, artifactUpstream)
 	}
 	if got := h.registryURLFor("homebrew/cask/firefox"); got != "" {
 		t.Errorf("other Homebrew registry = %q, want blocked", got)
 	}
 	if got := h.registryURLFor("library/nginx"); got != dockerHubRegistry {
 		t.Errorf("unrelated registry = %q, want %q", got, dockerHubRegistry)
 	}
 }
 func TestRegisterHomebrewArtifactsRejectsOtherHomebrewRoutes(t *testing.T) {
 	upstreamRequests := 0
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		upstreamRequests++
 		_, _ = io.WriteString(w, "unexpected upstream response")
 	}))
 	defer upstream.Close()
 	proxy, _, _, fetcher := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	fetcher.artifact = &fetch.Artifact{
 		Body:        io.NopCloser(strings.NewReader("unexpected upstream blob")),
 		ContentType: "application/octet-stream",
 	}
 	h := &ContainerHandler{proxy: proxy, registryURL: upstream.URL}
 	RegisterHomebrewArtifacts(h, "https://ghcr.io")
 	const digest = "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
 	paths := []string{
 		"/homebrew/cask/firefox/blobs/" + digest,
 		"/homebrew/cask/firefox/manifests/latest",
 		"/homebrew/cask/firefox/tags/list",
 	}
 	for _, path := range paths {
 		t.Run(path, func(t *testing.T) {
 			w := httptest.NewRecorder()
 			h.Routes().ServeHTTP(w, httptest.NewRequest(http.MethodGet, path, nil))
 			if w.Code != http.StatusNotFound {
 				t.Errorf("status = %d, want %d; body: %s", w.Code, http.StatusNotFound, w.Body.String())
 			}
 		})
 	}
 	if fetcher.fetchCalled {
 		t.Error("blocked Homebrew blob reached the artifact fetcher")
 	}
 	if upstreamRequests != 0 {
 		t.Errorf("blocked Homebrew routes made %d upstream requests, want 0", upstreamRequests)
 	}
 }
 // TestHomebrewHandler_RequestsGzipForAPIPaths covers #305's motivating case:
 // the JSON API files are fetched, cached and served gzip-compressed with
 // Content-Encoding: gzip (brew fetches them with --compressed), while the
 // analytics endpoints, which brew fetches without --compressed, stay identity.
 func TestHomebrewHandler_RequestsGzipForAPIPaths(t *testing.T) {
 	plain := []byte(`{"payload":"signed bytes","signatures":[]}`)
 	compressed := gzipPayload(t, plain)
 	var available atomic.Bool
 	available.Store(true)
 	var requests atomic.Int32
 	var sawAcceptEncoding atomic.Value // string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		requests.Add(1)
 		sawAcceptEncoding.Store(r.Header.Get(headerAcceptEncoding))
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		w.Header().Set(headerContentType, "application/json")
 		if strings.Contains(r.Header.Get(headerAcceptEncoding), "gzip") {
 			w.Header().Set(headerContentEncoding, "gzip")
 			_, _ = w.Write(compressed)
 			return
 		}
 		_, _ = w.Write(plain)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	h := NewHomebrewHandler(proxy, upstream.URL+"/api").Routes()
 	get := func(path string) *httptest.ResponseRecorder {
 		w := httptest.NewRecorder()
 		h.ServeHTTP(w, httptest.NewRequest(http.MethodGet, path, nil))
 		return w
 	}
 	lastAE := func() string {
 		s, _ := sawAcceptEncoding.Load().(string)
 		return s
 	}
 	first := get("/formula.jws.json")
 	if first.Code != http.StatusOK {
 		t.Fatalf("formula.jws.json: status = %d, want 200: %s", first.Code, first.Body.String())
 	}
 	if got := lastAE(); got != "gzip" {
 		t.Errorf("formula.jws.json: upstream Accept-Encoding = %q, want %q", got, "gzip")
 	}
 	if !bytes.Equal(first.Body.Bytes(), compressed) {
 		t.Errorf("formula.jws.json: body is not the compressed bytes (got %d, want %d)", first.Body.Len(), len(compressed))
 	}
 	if got := first.Header().Get(headerContentEncoding); got != "gzip" {
 		t.Errorf("formula.jws.json: Content-Encoding = %q, want %q", got, "gzip")
 	}
 	if got := first.Header().Get(headerContentLength); got != strconv.Itoa(len(compressed)) {
 		t.Errorf("formula.jws.json: Content-Length = %q, want %d", got, len(compressed))
 	}
 	// Replay from cache with the upstream down: same bytes and header, no refetch.
 	before := requests.Load()
 	available.Store(false)
 	cached := get("/formula.jws.json")
 	if cached.Code != http.StatusOK {
 		t.Fatalf("cached formula.jws.json: status = %d, want 200: %s", cached.Code, cached.Body.String())
 	}
 	if !bytes.Equal(cached.Body.Bytes(), compressed) || cached.Header().Get(headerContentEncoding) != "gzip" {
 		t.Errorf("cached formula.jws.json: body/header not replayed verbatim")
 	}
 	if requests.Load() != before {
 		t.Errorf("cached formula.jws.json hit upstream: requests %d -> %d", before, requests.Load())
 	}
 	available.Store(true)
 	// Analytics is fetched by brew without --compressed: stays identity, no header.
 	analytics := get("/analytics/install/30d.json")
 	if analytics.Code != http.StatusOK {
 		t.Fatalf("analytics: status = %d, want 200: %s", analytics.Code, analytics.Body.String())
 	}
 	if got := lastAE(); got != "identity" {
 		t.Errorf("analytics: upstream Accept-Encoding = %q, want %q", got, "identity")
 	}
 	if !bytes.Equal(analytics.Body.Bytes(), plain) {
 		t.Errorf("analytics: body = %q, want plain %q", analytics.Body.Bytes(), plain)
 	}
 	if got := analytics.Header().Get(headerContentEncoding); got != "" {
 		t.Errorf("analytics: Content-Encoding = %q, want empty", got)
 	}
 }
--- a/internal/handler/if_none_match_test.go
+++ b/internal/handler/if_none_match_test.go
@ -1,31 +0,0 @@
 package handler
 import "testing"
 func TestIfNoneMatchHits(t *testing.T) {
 	tests := []struct {
 		header string
 		etag   string
 		want   bool
 	}{
 		{`"abc"`, `"abc"`, true},
 		{`"abc"`, `"def"`, false},
 		{"", `"abc"`, false},
 		{`"abc"`, "", false},
 		{"*", `"abc"`, true},
 		{"*", "", false},
 		{`W/"abc"`, `"abc"`, true},
 		{`"abc"`, `W/"abc"`, true},
 		{`W/"abc"`, `W/"abc"`, true},
 		{`"abc", "def"`, `"def"`, true},
 		{`"abc","def"`, `"def"`, true},
 		{` "abc" ,  W/"def" `, `"def"`, true},
 		{`"abc", "def"`, `"ghi"`, false},
 	}
 	for _, tt := range tests {
 		if got := ifNoneMatchHits(tt.header, tt.etag); got != tt.want {
 			t.Errorf("ifNoneMatchHits(%q, %q) = %v, want %v", tt.header, tt.etag, got, tt.want)
 		}
 	}
 }
--- a/internal/handler/integrity.go
+++ b/internal/handler/integrity.go
@ -1,100 +0,0 @@
 package handler
 import (
 	"fmt"
 	"io"
 	"github.com/git-pkgs/integrity"
 )
 type integrityChecks struct {
 	contentHash integrity.SRI
 	native      integrity.SRI
 	algorithms  []integrity.Algorithm
 }
 func newIntegrityChecks(contentHash, native string) (integrityChecks, error) {
 	checks := integrityChecks{}
 	if contentHash != "" {
 		digest, err := integrity.ParseHex(integrity.SHA256, contentHash)
 		if err != nil {
 			return integrityChecks{}, fmt.Errorf("parse content_hash: %w", err)
 		}
 		checks.contentHash = integrity.SRI{digest}
 		checks.algorithms = append(checks.algorithms, integrity.SHA256)
 	}
 	if native != "" {
 		digests, err := integrity.ParseSRI(native)
 		if err != nil {
 			return integrityChecks{}, fmt.Errorf("parse integrity: %w", err)
 		}
 		checks.native = digests
 		for _, digest := range digests {
 			checks.algorithms = append(checks.algorithms, digest.Algorithm())
 		}
 	}
 	return checks, nil
 }
 func (c integrityChecks) wrap(source io.ReadCloser, onMismatch func(string)) (io.ReadCloser, error) {
 	if len(c.algorithms) == 0 {
 		return source, nil
 	}
 	reader, err := integrity.NewReader(source, c.algorithms...)
 	if err != nil {
 		return nil, fmt.Errorf("create integrity reader: %w", err)
 	}
 	return &verifyingReader{
 		source:     source,
 		reader:     reader,
 		checks:     c,
 		onMismatch: onMismatch,
 	}, nil
 }
 // verifyingReader forwards Close to its source and reports completed digest
 // mismatches after its shared integrity reader observes EOF.
 type verifyingReader struct {
 	source     io.ReadCloser
 	reader     *integrity.Reader
 	checks     integrityChecks
 	onMismatch func(reason string)
 	verified   bool
 }
 func (r *verifyingReader) Read(p []byte) (int, error) {
 	n, err := r.reader.Read(p)
 	if err == io.EOF {
 		r.verify()
 	}
 	return n, err
 }
 func (r *verifyingReader) Close() error {
 	return r.source.Close()
 }
 func (r *verifyingReader) verify() {
 	if r.verified {
 		return
 	}
 	r.verified = true
 	result := r.reader.Result()
 	if !result.Complete {
 		return
 	}
 	if len(r.checks.contentHash) > 0 {
 		if err := result.Verify(r.checks.contentHash); err != nil {
 			r.onMismatch("content_hash: " + err.Error())
 		}
 	}
 	if len(r.checks.native) > 0 {
 		if err := result.Verify(r.checks.native); err != nil {
 			r.onMismatch("integrity: " + err.Error())
 		}
 	}
 }
--- a/internal/handler/integrity_test.go
+++ b/internal/handler/integrity_test.go
@ -1,250 +0,0 @@
 package handler
 import (
 	"crypto/sha256"
 	"crypto/sha512"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
 	"io"
 	"strings"
 	"testing"
 )
 func sha256Hex(data string) string {
 	sum := sha256.Sum256([]byte(data))
 	return hex.EncodeToString(sum[:])
 }
 func sha256SRI(data string) string {
 	sum := sha256.Sum256([]byte(data))
 	return "sha256-" + base64.StdEncoding.EncodeToString(sum[:])
 }
 func sha384SRI(data string) string {
 	sum := sha512.Sum384([]byte(data))
 	return "sha384-" + base64.StdEncoding.EncodeToString(sum[:])
 }
 func sha512SRI(data string) string {
 	sum := sha512.Sum512([]byte(data))
 	return "sha512-" + base64.StdEncoding.EncodeToString(sum[:])
 }
 func wrapIntegrityReader(t *testing.T, source io.ReadCloser, contentHash, native string, onMismatch func(string)) io.ReadCloser {
 	t.Helper()
 	checks, err := newIntegrityChecks(contentHash, native)
 	if err != nil {
 		t.Fatalf("newIntegrityChecks: %v", err)
 	}
 	reader, err := checks.wrap(source, onMismatch)
 	if err != nil {
 		t.Fatalf("wrap: %v", err)
 	}
 	return reader
 }
 func TestNewIntegrityChecksCollectsAlgorithms(t *testing.T) {
 	checks, err := newIntegrityChecks(
 		sha256Hex("hello"),
 		strings.Join([]string{sha256SRI("first"), sha512SRI("second"), sha384SRI("third"), sha512SRI("alternative")}, " "),
 	)
 	if err != nil {
 		t.Fatal(err)
 	}
 	if len(checks.algorithms) != 5 {
 		t.Fatalf("algorithms = %v, want 5 entries", checks.algorithms)
 	}
 	if len(checks.native) != 4 {
 		t.Errorf("native digests = %d, want 4", len(checks.native))
 	}
 }
 func TestNewIntegrityChecksRejectsMalformedMetadata(t *testing.T) {
 	tests := []struct {
 		name        string
 		contentHash string
 		native      string
 	}{
 		{name: "short content hash", contentHash: "abc123"},
 		{name: "non-hex content hash", contentHash: strings.Repeat("z", sha256.Size*2)},
 		{name: "missing SRI separator", native: "sha512"},
 		{name: "malformed SRI base64", native: "sha512-not!base64"},
 		{name: "wrong SRI length", native: "sha512-" + base64.StdEncoding.EncodeToString([]byte("short"))},
 		{name: "unsupported SRI algorithm", native: "md5-1B2M2Y8AsgTpgAmY7PhCfg=="},
 		{name: "invalid SRI alternative", native: sha512SRI("valid") + " sha384-nope"},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			if _, err := newIntegrityChecks(test.contentHash, test.native); err == nil {
 				t.Fatal("newIntegrityChecks returned nil error")
 			}
 		})
 	}
 }
 func TestVerifyingReader(t *testing.T) {
 	const data = "hello world"
 	goodSHA := sha256Hex(data)
 	goodSRI := sha512SRI(data)
 	tests := []struct {
 		name      string
 		hash      string
 		sri       string
 		wantCalls int
 	}{
 		{name: "both match", hash: goodSHA, sri: goodSRI},
 		{name: "SHA-256 only match", hash: goodSHA},
 		{name: "SRI only match", sri: goodSRI},
 		{name: "SHA-256 mismatch", hash: sha256Hex("other"), wantCalls: 1},
 		{name: "SRI mismatch", sri: sha512SRI("other"), wantCalls: 1},
 		{name: "both mismatch", hash: sha256Hex("other"), sri: sha512SRI("other"), wantCalls: 2},
 		{name: "no checks"},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			var calls []string
 			reader := wrapIntegrityReader(t, io.NopCloser(strings.NewReader(data)), test.hash, test.sri,
 				func(reason string) { calls = append(calls, reason) })
 			got, err := io.ReadAll(reader)
 			if err != nil {
 				t.Fatalf("ReadAll: %v", err)
 			}
 			if string(got) != data {
 				t.Errorf("data corrupted: got %q", got)
 			}
 			if err := reader.Close(); err != nil {
 				t.Fatalf("Close: %v", err)
 			}
 			if len(calls) != test.wantCalls {
 				t.Errorf("onMismatch called %d times, want %d: %v", len(calls), test.wantCalls, calls)
 			}
 		})
 	}
 }
 func TestVerifyingReaderUsesStrongestNativeAlgorithm(t *testing.T) {
 	const data = "artifact"
 	tests := []struct {
 		name      string
 		native    string
 		wantCalls int
 	}{
 		{
 			name:      "weaker match does not override stronger mismatch",
 			native:    sha256SRI(data) + " " + sha512SRI("other"),
 			wantCalls: 1,
 		},
 		{
 			name:   "stronger match ignores weaker mismatch",
 			native: sha256SRI("other") + " " + sha512SRI(data),
 		},
 		{
 			name:   "same algorithm alternative matches",
 			native: sha512SRI("other") + " " + sha512SRI(data),
 		},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			var calls int
 			reader := wrapIntegrityReader(t, io.NopCloser(strings.NewReader(data)), "", test.native, func(string) { calls++ })
 			if _, err := io.Copy(io.Discard, reader); err != nil {
 				t.Fatal(err)
 			}
 			if calls != test.wantCalls {
 				t.Errorf("onMismatch called %d times, want %d", calls, test.wantCalls)
 			}
 		})
 	}
 }
 func TestVerifyingReaderMismatchMessages(t *testing.T) {
 	const data = "actual"
 	wantHash := sha256Hex("expected")
 	wantSRI := sha512SRI("expected")
 	var reasons []string
 	reader := wrapIntegrityReader(t, io.NopCloser(strings.NewReader(data)), wantHash, wantSRI,
 		func(reason string) { reasons = append(reasons, reason) })
 	if _, err := io.Copy(io.Discard, reader); err != nil {
 		t.Fatal(err)
 	}
 	if len(reasons) != 2 {
 		t.Fatalf("reasons = %v, want two", reasons)
 	}
 	wantContentReason := "content_hash: integrity mismatch: expected " + sha256SRI("expected") + ", calculated " + sha256SRI(data)
 	if reasons[0] != wantContentReason {
 		t.Errorf("content reason = %q, want %q", reasons[0], wantContentReason)
 	}
 	wantNativeReason := "integrity: integrity mismatch: expected " + wantSRI + ", calculated " + sha512SRI(data)
 	if reasons[1] != wantNativeReason {
 		t.Errorf("native reason = %q, want %q", reasons[1], wantNativeReason)
 	}
 }
 func TestVerifyingReaderPassthrough(t *testing.T) {
 	source := io.NopCloser(strings.NewReader("x"))
 	reader := wrapIntegrityReader(t, source, "", "", func(string) { t.Fatal("should not be called") })
 	if reader != source {
 		t.Error("expected passthrough when no hashes were provided")
 	}
 }
 type closeTrackingReader struct {
 	io.Reader
 	closed bool
 }
 func (r *closeTrackingReader) Close() error {
 	r.closed = true
 	return nil
 }
 func TestVerifyingReaderPartialRead(t *testing.T) {
 	source := &closeTrackingReader{Reader: strings.NewReader("hello world")}
 	var calls int
 	reader := wrapIntegrityReader(t, source, sha256Hex("other"), "", func(string) { calls++ })
 	buffer := make([]byte, 5)
 	_, _ = reader.Read(buffer)
 	_ = reader.Close()
 	if calls != 0 {
 		t.Errorf("onMismatch called %d times for partial read, want 0", calls)
 	}
 	if !source.closed {
 		t.Error("Close was not forwarded to the source")
 	}
 }
 func TestVerifyingReaderNonEOFError(t *testing.T) {
 	var calls int
 	reader := wrapIntegrityReader(t, io.NopCloser(errorFixtureReader{}), sha256Hex("data"), "", func(string) { calls++ })
 	if _, err := io.ReadAll(reader); !errors.Is(err, errIntegrityReadFixture) {
 		t.Fatalf("ReadAll error = %v", err)
 	}
 	if calls != 0 {
 		t.Errorf("onMismatch called %d times after non-EOF error", calls)
 	}
 }
 var errIntegrityReadFixture = errors.New("integrity read fixture")
 type errorFixtureReader struct{}
 func (errorFixtureReader) Read(p []byte) (int, error) {
 	return copy(p, "data"), errIntegrityReadFixture
 }
 func TestVerifyingReaderVerifyOnce(t *testing.T) {
 	var calls int
 	reader := wrapIntegrityReader(t, io.NopCloser(strings.NewReader("x")), sha256Hex("y"), "", func(string) { calls++ })
 	_, _ = io.ReadAll(reader)
 	_ = reader.Close()
 	_ = reader.Close()
 	if calls != 1 {
 		t.Errorf("onMismatch called %d times, want 1", calls)
 	}
 }
--- a/internal/handler/julia.go
+++ b/internal/handler/julia.go
@ -1,351 +0,0 @@
 package handler
 import (
 	"archive/tar"
 	"bufio"
 	"bytes"
 	"compress/gzip"
 	"context"
 	"fmt"
 	"io"
 	"net/http"
 	"regexp"
 	"strings"
 	"sync"
 	"github.com/BurntSushi/toml"
 )
 const (
 	juliaUpstream            = "https://pkg.julialang.org"
 	juliaGeneralRegistryUUID = "23338594-aafe-5451-b93e-139f81909106"
 	juliaArtifactName        = "_artifact"
 	juliaRegistryName        = "_registry"
 )
 var (
 	juliaHexPattern  = regexp.MustCompile(`^[0-9a-f]{40,64}$`)
 	juliaUUIDPattern = regexp.MustCompile(`^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$`)
 )
 // JuliaHandler handles Julia Pkg server protocol requests.
 //
 // See https://pkgdocs.julialang.org/v1/registries/ and the PkgServer.jl
 // reference implementation. The protocol is content-addressed: registry,
 // package and artifact resources are all identified by git tree hashes
 // and are immutable once published.
 type JuliaHandler struct {
 	proxy       *Proxy
 	upstreamURL string
 	mu        sync.RWMutex
 	names     map[string]string
 	namesHash string
 	loadMu    sync.Mutex
 }
 // NewJuliaHandler creates a new Julia Pkg server handler.
 func NewJuliaHandler(proxy *Proxy, _ string) *JuliaHandler {
 	return &JuliaHandler{
 		proxy:       proxy,
 		upstreamURL: juliaUpstream,
 		names:       make(map[string]string),
 	}
 }
 // NewJuliaHandlerWithUpstream creates a Julia handler with a custom upstream.
 func NewJuliaHandlerWithUpstream(proxy *Proxy, upstreamURL string) *JuliaHandler {
 	h := NewJuliaHandler(proxy, "")
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, juliaUpstream)
 	return h
 }
 // Routes returns the HTTP handler for Julia requests.
 func (h *JuliaHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /registries", h.handleRegistries)
 	mux.HandleFunc("GET /registries.eager", h.handleRegistries)
 	mux.HandleFunc("GET /registries.conservative", h.handleRegistries)
 	mux.HandleFunc("GET /registry/{uuid}/{hash}", h.handleRegistry)
 	mux.HandleFunc("GET /package/{uuid}/{hash}", h.handlePackage)
 	mux.HandleFunc("GET /artifact/{hash}", h.handleArtifact)
 	mux.HandleFunc("GET /meta", h.proxyUpstream)
 	return mux
 }
 // handleRegistries serves the list of available registries. This is the only
 // mutable endpoint in the protocol so it goes through the metadata cache.
 func (h *JuliaHandler) handleRegistries(w http.ResponseWriter, r *http.Request) {
 	cacheKey := strings.TrimPrefix(r.URL.Path, "/")
 	h.proxy.ProxyCached(w, r, h.upstreamURL+r.URL.Path, "julia", cacheKey, "*/*")
 }
 // handleRegistry serves an immutable registry tarball and refreshes the
 // UUID→name map from its Registry.toml.
 func (h *JuliaHandler) handleRegistry(w http.ResponseWriter, r *http.Request) {
 	uuid := r.PathValue("uuid")
 	hash := r.PathValue("hash")
 	if !validJuliaUUID(uuid) || !juliaHexPattern.MatchString(hash) {
 		http.Error(w, "invalid registry reference", http.StatusBadRequest)
 		return
 	}
 	h.proxy.Logger.Info("julia registry request", "uuid", uuid, "hash", hash)
 	upstreamURL := h.upstreamURL + r.URL.Path
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "julia", juliaRegistryName, hash, hash+".tar.gz", upstreamURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch registry")
 		return
 	}
 	go h.refreshNamesFromRegistry(uuid, hash)
 	ServeArtifact(w, result)
 }
 // handlePackage serves an immutable package source tarball.
 func (h *JuliaHandler) handlePackage(w http.ResponseWriter, r *http.Request) {
 	uuid := r.PathValue("uuid")
 	hash := r.PathValue("hash")
 	if !validJuliaUUID(uuid) || !juliaHexPattern.MatchString(hash) {
 		http.Error(w, "invalid package reference", http.StatusBadRequest)
 		return
 	}
 	if err := h.ensureNames(r.Context()); err != nil {
 		h.proxy.Logger.Warn("julia name map unavailable, using uuid", "error", err)
 	}
 	name := h.resolveName(uuid)
 	h.proxy.Logger.Info("julia package request", "name", name, "uuid", uuid, "hash", hash)
 	upstreamURL := h.upstreamURL + r.URL.Path
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "julia", name, hash, hash+".tar.gz", upstreamURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch package")
 		return
 	}
 	ServeArtifact(w, result)
 }
 // handleArtifact serves an immutable binary artifact tarball. Artifacts are
 // anonymous content-addressed blobs with no associated package name.
 func (h *JuliaHandler) handleArtifact(w http.ResponseWriter, r *http.Request) {
 	hash := r.PathValue("hash")
 	if !juliaHexPattern.MatchString(hash) {
 		http.Error(w, "invalid artifact hash", http.StatusBadRequest)
 		return
 	}
 	h.proxy.Logger.Info("julia artifact request", "hash", hash)
 	upstreamURL := h.upstreamURL + r.URL.Path
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "julia", juliaArtifactName, hash, hash+".tar.gz", upstreamURL)
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch artifact")
 		return
 	}
 	ServeArtifact(w, result)
 }
 // proxyUpstream forwards a request to the upstream Pkg server without caching.
 func (h *JuliaHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, nil)
 }
 // resolveName returns the human-readable package name for a UUID, falling
 // back to the UUID itself if it is not present in the loaded registry.
 func (h *JuliaHandler) resolveName(uuid string) string {
 	h.mu.RLock()
 	defer h.mu.RUnlock()
 	if name, ok := h.names[uuid]; ok {
 		return name
 	}
 	return uuid
 }
 // ensureNames lazily populates the UUID→name map from the General registry.
 // Returns immediately if the map is already populated; otherwise blocks until
 // a single in-flight load completes. Failed loads are retried on the next call.
 func (h *JuliaHandler) ensureNames(ctx context.Context) error {
 	if h.namesLoaded() {
 		return nil
 	}
 	h.loadMu.Lock()
 	defer h.loadMu.Unlock()
 	if h.namesLoaded() {
 		return nil
 	}
 	return h.loadNamesFromUpstream(ctx)
 }
 func (h *JuliaHandler) namesLoaded() bool {
 	h.mu.RLock()
 	defer h.mu.RUnlock()
 	return len(h.names) > 0
 }
 // loadNamesFromUpstream fetches the current /registries listing, downloads the
 // General registry tarball at its current hash, and parses Registry.toml.
 func (h *JuliaHandler) loadNamesFromUpstream(ctx context.Context) error {
 	hash, err := h.fetchGeneralRegistryHash(ctx)
 	if err != nil {
 		return err
 	}
 	return h.loadRegistryTarball(ctx, juliaGeneralRegistryUUID, hash)
 }
 // fetchGeneralRegistryHash reads /registries and returns the current tree hash
 // for the General registry.
 func (h *JuliaHandler) fetchGeneralRegistryHash(ctx context.Context) (string, error) {
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, h.upstreamURL+"/registries", nil)
 	if err != nil {
 		return "", err
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		return "", err
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		return "", fmt.Errorf("upstream /registries returned %d", resp.StatusCode)
 	}
 	scanner := bufio.NewScanner(resp.Body)
 	for scanner.Scan() {
 		uuid, hash, ok := parseRegistryLine(scanner.Text())
 		if ok && uuid == juliaGeneralRegistryUUID {
 			return hash, nil
 		}
 	}
 	if err := scanner.Err(); err != nil {
 		return "", err
 	}
 	return "", fmt.Errorf("general registry not listed in /registries")
 }
 // refreshNamesFromRegistry reloads the UUID→name map from a registry tarball
 // that has just been cached. Errors are logged but do not affect the response.
 func (h *JuliaHandler) refreshNamesFromRegistry(uuid, hash string) {
 	if uuid != juliaGeneralRegistryUUID {
 		return
 	}
 	h.mu.RLock()
 	current := h.namesHash
 	h.mu.RUnlock()
 	if current == hash {
 		return
 	}
 	if err := h.loadRegistryTarball(context.Background(), uuid, hash); err != nil {
 		h.proxy.Logger.Warn("failed to refresh julia name map", "error", err)
 	}
 }
 // loadRegistryTarball downloads a registry tarball and replaces the name map
 // with the contents of its Registry.toml.
 func (h *JuliaHandler) loadRegistryTarball(ctx context.Context, uuid, hash string) error {
 	url := fmt.Sprintf("%s/registry/%s/%s", h.upstreamURL, uuid, hash)
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return err
 	}
 	resp, err := h.proxy.HTTPClient.Do(req)
 	if err != nil {
 		return err
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("upstream registry returned %d", resp.StatusCode)
 	}
 	names, err := extractRegistryNames(resp.Body)
 	if err != nil {
 		return err
 	}
 	h.mu.Lock()
 	h.names = names
 	h.namesHash = hash
 	h.mu.Unlock()
 	h.proxy.Logger.Info("loaded julia registry name map", "packages", len(names), "hash", hash)
 	return nil
 }
 // extractRegistryNames reads a gzipped registry tarball, finds Registry.toml
 // at the root, and returns its [packages] table as a UUID→name map.
 func extractRegistryNames(r io.Reader) (map[string]string, error) {
 	gz, err := gzip.NewReader(r)
 	if err != nil {
 		return nil, fmt.Errorf("opening gzip stream: %w", err)
 	}
 	defer func() { _ = gz.Close() }()
 	tr := tar.NewReader(gz)
 	for {
 		hdr, err := tr.Next()
 		if err == io.EOF {
 			return nil, fmt.Errorf("no Registry.toml in tarball")
 		}
 		if err != nil {
 			return nil, err
 		}
 		if strings.TrimPrefix(hdr.Name, "./") != "Registry.toml" {
 			continue
 		}
 		data, err := io.ReadAll(tr)
 		if err != nil {
 			return nil, err
 		}
 		return parseRegistryToml(data)
 	}
 }
 type juliaRegistryFile struct {
 	Packages map[string]struct {
 		Name string `toml:"name"`
 	} `toml:"packages"`
 }
 // parseRegistryToml decodes the [packages] table of a Registry.toml file.
 func parseRegistryToml(data []byte) (map[string]string, error) {
 	var reg juliaRegistryFile
 	if _, err := toml.NewDecoder(bytes.NewReader(data)).Decode(&reg); err != nil {
 		return nil, fmt.Errorf("parsing Registry.toml: %w", err)
 	}
 	names := make(map[string]string, len(reg.Packages))
 	for uuid, pkg := range reg.Packages {
 		if pkg.Name != "" {
 			names[uuid] = pkg.Name
 		}
 	}
 	return names, nil
 }
 // parseRegistryLine parses a single line from /registries of the form
 // "/registry/{uuid}/{hash}" and returns the uuid and hash.
 func parseRegistryLine(line string) (uuid, hash string, ok bool) {
 	line = strings.TrimSpace(line)
 	line = strings.TrimPrefix(line, "/registry/")
 	uuid, hash, found := strings.Cut(line, "/")
 	if !found || !validJuliaUUID(uuid) || !juliaHexPattern.MatchString(hash) {
 		return "", "", false
 	}
 	return uuid, hash, true
 }
 // validJuliaUUID reports whether s looks like a lowercase RFC 4122 UUID.
 func validJuliaUUID(s string) bool {
 	return juliaUUIDPattern.MatchString(s)
 }
--- a/internal/handler/julia_test.go
+++ b/internal/handler/julia_test.go
@ -1,167 +0,0 @@
 package handler
 import (
 	"archive/tar"
 	"bytes"
 	"compress/gzip"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 )
 func TestJuliaParseRegistryLine(t *testing.T) {
 	tests := []struct {
 		line     string
 		wantUUID string
 		wantHash string
 		wantOK   bool
 	}{
 		{
 			"/registry/23338594-aafe-5451-b93e-139f81909106/342327538ed6c1ec54c69fa145e7b6bf5934201e",
 			"23338594-aafe-5451-b93e-139f81909106",
 			"342327538ed6c1ec54c69fa145e7b6bf5934201e",
 			true,
 		},
 		{
 			" /registry/23338594-aafe-5451-b93e-139f81909106/342327538ed6c1ec54c69fa145e7b6bf5934201e\n",
 			"23338594-aafe-5451-b93e-139f81909106",
 			"342327538ed6c1ec54c69fa145e7b6bf5934201e",
 			true,
 		},
 		{"/registry/not-a-uuid/0000", "", "", false},
 		{"junk", "", "", false},
 		{"", "", "", false},
 	}
 	for _, tt := range tests {
 		uuid, hash, ok := parseRegistryLine(tt.line)
 		if uuid != tt.wantUUID || hash != tt.wantHash || ok != tt.wantOK {
 			t.Errorf("parseRegistryLine(%q) = (%q, %q, %v), want (%q, %q, %v)",
 				tt.line, uuid, hash, ok, tt.wantUUID, tt.wantHash, tt.wantOK)
 		}
 	}
 }
 func TestJuliaValidUUID(t *testing.T) {
 	tests := []struct {
 		s    string
 		want bool
 	}{
 		{"23338594-aafe-5451-b93e-139f81909106", true},
 		{"295af30f-e4ad-537b-8983-00126c2a3abe", true},
 		{"23338594-AAFE-5451-b93e-139f81909106", false},
 		{"23338594aafe5451b93e139f81909106", false},
 		{"23338594-aafe-5451-b93e-139f8190910", false},
 		{"23338594-aafe-5451-b93e-139f81909106-", false},
 		{"23338594-gafe-5451-b93e-139f81909106", false},
 		{"", false},
 	}
 	for _, tt := range tests {
 		if got := validJuliaUUID(tt.s); got != tt.want {
 			t.Errorf("validJuliaUUID(%q) = %v, want %v", tt.s, got, tt.want)
 		}
 	}
 }
 func TestJuliaParseRegistryToml(t *testing.T) {
 	data := []byte(`name = "General"
 uuid = "23338594-aafe-5451-b93e-139f81909106"
 [packages]
 295af30f-e4ad-537b-8983-00126c2a3abe = { name = "Revise", path = "R/Revise" }
 91a5bcdd-55d7-5caf-9e0b-520d859cae80 = { name = "Plots", path = "P/Plots" }
 `)
 	names, err := parseRegistryToml(data)
 	if err != nil {
 		t.Fatalf("parseRegistryToml: %v", err)
 	}
 	if got := names["295af30f-e4ad-537b-8983-00126c2a3abe"]; got != "Revise" {
 		t.Errorf("names[Revise uuid] = %q, want Revise", got)
 	}
 	if got := names["91a5bcdd-55d7-5caf-9e0b-520d859cae80"]; got != "Plots" {
 		t.Errorf("names[Plots uuid] = %q, want Plots", got)
 	}
 	if len(names) != 2 {
 		t.Errorf("len(names) = %d, want 2", len(names))
 	}
 }
 func TestJuliaExtractRegistryNames(t *testing.T) {
 	registryToml := `name = "General"
 [packages]
 295af30f-e4ad-537b-8983-00126c2a3abe = { name = "Revise", path = "R/Revise" }
 `
 	var buf bytes.Buffer
 	gw := gzip.NewWriter(&buf)
 	tw := tar.NewWriter(gw)
 	for _, f := range []struct{ name, body string }{
 		{"R/Revise/Package.toml", "name = \"Revise\"\n"},
 		{"Registry.toml", registryToml},
 	} {
 		if err := tw.WriteHeader(&tar.Header{Name: f.name, Mode: 0o644, Size: int64(len(f.body))}); err != nil {
 			t.Fatalf("WriteHeader: %v", err)
 		}
 		if _, err := tw.Write([]byte(f.body)); err != nil {
 			t.Fatalf("Write: %v", err)
 		}
 	}
 	if err := tw.Close(); err != nil {
 		t.Fatalf("tar Close: %v", err)
 	}
 	if err := gw.Close(); err != nil {
 		t.Fatalf("gzip Close: %v", err)
 	}
 	names, err := extractRegistryNames(bytes.NewReader(buf.Bytes()))
 	if err != nil {
 		t.Fatalf("extractRegistryNames: %v", err)
 	}
 	if got := names["295af30f-e4ad-537b-8983-00126c2a3abe"]; got != "Revise" {
 		t.Errorf("names[Revise uuid] = %q, want Revise", got)
 	}
 }
 func TestJuliaResolveName(t *testing.T) {
 	h := &JuliaHandler{
 		proxy: &Proxy{Logger: slog.Default()},
 		names: map[string]string{
 			"295af30f-e4ad-537b-8983-00126c2a3abe": "Revise",
 		},
 	}
 	if got := h.resolveName("295af30f-e4ad-537b-8983-00126c2a3abe"); got != "Revise" {
 		t.Errorf("resolveName(known) = %q, want Revise", got)
 	}
 	if got := h.resolveName("00000000-0000-0000-0000-000000000000"); got != "00000000-0000-0000-0000-000000000000" {
 		t.Errorf("resolveName(unknown) = %q, want uuid fallback", got)
 	}
 }
 func TestJuliaRoutesValidation(t *testing.T) {
 	h := NewJuliaHandler(&Proxy{Logger: slog.Default()}, "")
 	routes := h.Routes()
 	tests := []struct {
 		path string
 		want int
 	}{
 		{"/package/not-a-uuid/342327538ed6c1ec54c69fa145e7b6bf5934201e", http.StatusBadRequest},
 		{"/package/295af30f-e4ad-537b-8983-00126c2a3abe/short", http.StatusBadRequest},
 		{"/registry/295af30f-e4ad-537b-8983-00126c2a3abe/zzzz", http.StatusBadRequest},
 		{"/artifact/nothex", http.StatusBadRequest},
 		{"/nope", http.StatusNotFound},
 	}
 	for _, tt := range tests {
 		req := httptest.NewRequest(http.MethodGet, tt.path, nil)
 		rr := httptest.NewRecorder()
 		routes.ServeHTTP(rr, req)
 		if rr.Code != tt.want {
 			t.Errorf("GET %s = %d, want %d", tt.path, rr.Code, tt.want)
 		}
 	}
 }
--- a/internal/handler/maven.go
+++ b/internal/handler/maven.go
@ -1,41 +1,30 @@
 package handler
 import (
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"path"
 	"strings"
 )
 const (
-	mavenCentralUpstream       = "https://repo1.maven.org/maven2"
+	mavenUpstream = "https://repo1.maven.org/maven2"
 	gradlePluginPortalUpstream = "https://plugins.gradle.org/m2"
 	minMavenParts              = 4 // group path segments + artifact + version + filename
 )
 // MavenHandler handles Maven repository protocol requests.
 type MavenHandler struct {
-	proxy                   *Proxy
+	proxy       *Proxy
-	upstreamURL             string
+	upstreamURL string
-	pluginPortalUpstreamURL string
+	proxyURL    string
 	proxyURL                string
 }
 // NewMavenHandler creates a new Maven repository handler.
-func NewMavenHandler(proxy *Proxy, proxyURL, upstreamURL, pluginPortalUpstreamURL string) *MavenHandler {
+func NewMavenHandler(proxy *Proxy, proxyURL string) *MavenHandler {
 	if strings.TrimSpace(upstreamURL) == "" {
 		upstreamURL = mavenCentralUpstream
 	}
 	if strings.TrimSpace(pluginPortalUpstreamURL) == "" {
 		pluginPortalUpstreamURL = gradlePluginPortalUpstream
 	}
 	return &MavenHandler{
-		proxy:                   proxy,
+		proxy:       proxy,
-		upstreamURL:             strings.TrimSuffix(upstreamURL, "/"),
+		upstreamURL: mavenUpstream,
-		pluginPortalUpstreamURL: strings.TrimSuffix(pluginPortalUpstreamURL, "/"),
+		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 		proxyURL:                strings.TrimSuffix(proxyURL, "/"),
 	}
 }
@ -62,7 +51,8 @@ func (h *MavenHandler) handleRequest(w http.ResponseWriter, r *http.Request) {
 	filename := path.Base(urlPath)
 	if h.isMetadataFile(filename) {
-		h.handleMetadata(w, r, urlPath)
+		// Proxy metadata without caching
 		h.proxyUpstream(w, r)
 		return
 	}
@ -76,32 +66,6 @@ func (h *MavenHandler) handleRequest(w http.ResponseWriter, r *http.Request) {
 	h.proxyUpstream(w, r)
 }
 func (h *MavenHandler) handleMetadata(w http.ResponseWriter, r *http.Request, urlPath string) {
 	cacheKey := strings.ReplaceAll(urlPath, "/", "_")
 	upstreamURL := fmt.Sprintf("%s/%s", h.upstreamURL, urlPath)
 	body, contentType, err := h.proxy.FetchOrCacheMetadata(r.Context(), "maven", cacheKey, upstreamURL, "*/*")
 	if err != nil {
 		if errors.Is(err, ErrUpstreamNotFound) {
 			pluginPortalURL := fmt.Sprintf("%s/%s", h.pluginPortalUpstreamURL, urlPath)
 			h.proxy.Logger.Info("maven metadata unavailable in primary upstream, trying Gradle Plugin Portal",
 				"path", urlPath)
 			body, contentType, err = h.proxy.FetchOrCacheMetadata(r.Context(), "maven", cacheKey, pluginPortalURL, "*/*")
 		}
 	}
 	if err != nil {
 		if errors.Is(err, ErrUpstreamNotFound) {
 			http.Error(w, "not found", http.StatusNotFound)
 			return
 		}
 		h.proxy.Logger.Error("metadata fetch failed", "error", err)
 		http.Error(w, "failed to fetch from upstream", http.StatusBadGateway)
 		return
 	}
 	h.proxy.writeMetadataCachedResponse(w, r, "maven", cacheKey, body, contentType)
 }
 // handleDownload serves an artifact file, fetching and caching from upstream if needed.
 func (h *MavenHandler) handleDownload(w http.ResponseWriter, r *http.Request, urlPath string) {
 	// Parse Maven path: group/artifact/version/filename
@ -122,15 +86,8 @@ func (h *MavenHandler) handleDownload(w http.ResponseWriter, r *http.Request, ur
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "maven", name, version, filename, upstreamURL)
 	if err != nil {
-		if errors.Is(err, ErrUpstreamNotFound) {
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
-			pluginPortalURL := fmt.Sprintf("%s/%s", h.pluginPortalUpstreamURL, urlPath)
+		http.Error(w, "failed to fetch artifact", http.StatusBadGateway)
 			h.proxy.Logger.Info("maven artifact not found in primary upstream, trying Gradle Plugin Portal",
 				"group", group, "artifact", artifact, "version", version, "filename", filename)
 			result, err = h.proxy.GetOrFetchArtifactFromURL(r.Context(), "maven", name, version, filename, pluginPortalURL)
 		}
 	}
 	if err != nil {
 		h.proxy.serveArtifactError(w, err, "failed to fetch artifact")
 		return
 	}
@ -142,7 +99,7 @@ func (h *MavenHandler) handleDownload(w http.ResponseWriter, r *http.Request, ur
 // -> ("com.google.guava", "guava", "32.1.3-jre", "guava-32.1.3-jre.jar")
 func (h *MavenHandler) parsePath(urlPath string) (group, artifact, version, filename string) {
 	parts := strings.Split(urlPath, "/")
-	if len(parts) < minMavenParts {
+	if len(parts) < 4 {
 		return "", "", "", ""
 	}
@ -158,7 +115,7 @@ func (h *MavenHandler) parsePath(urlPath string) (group, artifact, version, file
 // isArtifactFile returns true if the filename looks like a Maven artifact.
 func (h *MavenHandler) isArtifactFile(filename string) bool {
 	// Common artifact extensions
-	extensions := []string{".jar", ".war", ".ear", ".pom", ".aar", ".klib", ".module"}
+	extensions := []string{".jar", ".war", ".ear", ".pom", ".aar", ".klib"}
 	for _, ext := range extensions {
 		if strings.HasSuffix(filename, ext) {
 			return true
@ -179,5 +136,30 @@ func (h *MavenHandler) isMetadataFile(filename string) bool {
 // proxyUpstream forwards a request to Maven Central without caching.
 func (h *MavenHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
-	h.proxy.ProxyUpstream(w, r, h.upstreamURL+r.URL.Path, nil)
+	upstreamURL := h.upstreamURL + r.URL.Path
 	h.proxy.Logger.Debug("proxying to upstream", "url", upstreamURL)
 	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	for k, vv := range resp.Header {
 		for _, v := range vv {
 			w.Header().Add(k, v)
 		}
 	}
 	w.WriteHeader(resp.StatusCode)
 	_, _ = io.Copy(w, resp.Body)
 }
--- a/internal/handler/maven_test.go
+++ b/internal/handler/maven_test.go
@ -52,7 +52,6 @@ func TestMavenIsArtifactFile(t *testing.T) {
 	}{
 		{"guava-32.1.3-jre.jar", true},
 		{"guava-32.1.3-jre.pom", true},
 		{"guava-32.1.3-jre.module", true},
 		{"app-1.0.war", true},
 		{"lib-1.0.aar", true},
 		{"maven-metadata.xml", false},
@ -66,63 +65,3 @@ func TestMavenIsArtifactFile(t *testing.T) {
 		}
 	}
 }
 func TestMavenIsMetadataFile(t *testing.T) {
 	h := &MavenHandler{}
 	tests := []struct {
 		name     string
 		filename string
 		want     bool
 	}{
 		{
 			name:     "pom is artifact, not metadata",
 			filename: "com.diffplug.spotless.gradle.plugin-8.4.0.pom",
 			want:     false,
 		},
 		{
 			name:     "pom checksum is metadata",
 			filename: "com.diffplug.spotless.gradle.plugin-8.4.0.pom.sha1",
 			want:     true,
 		},
 		{
 			name:     "metadata file",
 			filename: "maven-metadata.xml",
 			want:     true,
 		},
 		{
 			name:     "metadata checksum",
 			filename: "maven-metadata.xml.sha256",
 			want:     true,
 		},
 		{
 			name:     "jar checksum is metadata",
 			filename: "guava-32.1.3-jre.jar.sha1",
 			want:     true,
 		},
 		{
 			name:     "asc signature is metadata",
 			filename: "guava-32.1.3-jre.jar.asc",
 			want:     true,
 		},
 		{
 			name:     "regular jar is not metadata",
 			filename: "guava-32.1.3-jre.jar",
 			want:     false,
 		},
 		{
 			name:     "pom checksum is metadata",
 			filename: "guava-32.1.3-jre.pom.sha1",
 			want:     true,
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			got := h.isMetadataFile(tt.filename)
 			if got != tt.want {
 				t.Errorf("isMetadataFile(%q) = %v, want %v", tt.filename, got, tt.want)
 			}
 		})
 	}
 }
--- a/internal/handler/metadata_encoding_test.go
+++ b/internal/handler/metadata_encoding_test.go
@ -1,200 +0,0 @@
 package handler
 import (
 	"bytes"
 	"compress/gzip"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
 )
 // gzipPayload returns a gzip-compressed copy of data, simulating an origin
 // that stores pre-compressed index files.
 func gzipPayload(t *testing.T, data []byte) []byte {
 	t.Helper()
 	var buf bytes.Buffer
 	zw := gzip.NewWriter(&buf)
 	if _, err := zw.Write(data); err != nil {
 		t.Fatalf("compressing payload: %v", err)
 	}
 	if err := zw.Close(); err != nil {
 		t.Fatalf("closing gzip writer: %v", err)
 	}
 	return buf.Bytes()
 }
 // TestProxyCached_PreservesContentEncodedBytes covers issue #300: an upstream
 // that serves a signed index with Content-Encoding: gzip must have its bytes
 // cached and re-served verbatim, with the encoding header replayed, instead of
 // being transparently decompressed by the HTTP client.
 func TestProxyCached_PreservesContentEncodedBytes(t *testing.T) {
 	raw := gzipPayload(t, []byte("signed index payload"))
 	var available atomic.Bool
 	available.Store(true)
 	var sawAcceptEncoding atomic.Value
 	var upstreamRequests atomic.Int32
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !available.Load() {
 			http.Error(w, "unavailable", http.StatusServiceUnavailable)
 			return
 		}
 		upstreamRequests.Add(1)
 		sawAcceptEncoding.Store(r.Header.Get(headerAcceptEncoding))
 		w.Header().Set(headerContentType, "application/octet-stream")
 		w.Header().Set(headerContentEncoding, "gzip")
 		_, _ = w.Write(raw)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	serve := func() *httptest.ResponseRecorder {
 		w := httptest.NewRecorder()
 		r := httptest.NewRequest(http.MethodGet, "/index", nil)
 		proxy.ProxyCached(w, r, upstream.URL+"/index", "apk", "index-key", "*/*")
 		return w
 	}
 	first := serve()
 	if first.Code != http.StatusOK {
 		t.Fatalf("first response status = %d, want 200: %s", first.Code, first.Body.String())
 	}
 	if got, _ := sawAcceptEncoding.Load().(string); got != "identity" {
 		t.Errorf("upstream saw Accept-Encoding %q, want %q", got, "identity")
 	}
 	if !bytes.Equal(first.Body.Bytes(), raw) {
 		t.Errorf("first response altered the upstream bytes: got %d bytes, want %d", first.Body.Len(), len(raw))
 	}
 	if got := first.Header().Get(headerContentEncoding); got != "gzip" {
 		t.Errorf("first response Content-Encoding = %q, want %q", got, "gzip")
 	}
 	// Within the TTL and with the upstream down, the cached copy must be
 	// served with the same bytes and encoding.
 	available.Store(false)
 	second := serve()
 	if second.Code != http.StatusOK {
 		t.Fatalf("cached response status = %d, want 200: %s", second.Code, second.Body.String())
 	}
 	if !bytes.Equal(second.Body.Bytes(), raw) {
 		t.Errorf("cached response altered the stored bytes")
 	}
 	if got := second.Header().Get(headerContentEncoding); got != "gzip" {
 		t.Errorf("cached response Content-Encoding = %q, want %q", got, "gzip")
 	}
 	if got := upstreamRequests.Load(); got != 1 {
 		t.Errorf("upstream requests = %d, want 1", got)
 	}
 }
 // TestProxyCached_NoEncodingHeaderForIdentityResponses pins that ordinary
 // responses do not grow a spurious Content-Encoding header.
 func TestProxyCached_NoEncodingHeaderForIdentityResponses(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		w.Header().Set(headerContentType, contentTypeJSON)
 		_, _ = w.Write([]byte(`{"ok":true}`))
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	w := httptest.NewRecorder()
 	r := httptest.NewRequest(http.MethodGet, "/meta", nil)
 	proxy.ProxyCached(w, r, upstream.URL+"/meta", "npm", "meta-key", contentTypeJSON)
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if got := w.Header().Get(headerContentEncoding); got != "" {
 		t.Errorf("Content-Encoding = %q, want empty", got)
 	}
 }
 // TestProxyMetadataStream_PreservesSignedBytesWithoutClientEncoding pins the
 // uncached streaming path (the default, since cache_metadata is off) for the
 // realistic client that sends no Accept-Encoding: the proxy must request
 // identity upstream so Go does not transparently decompress a signed index,
 // and the raw bytes plus the Content-Encoding header must reach the client.
 func TestProxyMetadataStream_PreservesSignedBytesWithoutClientEncoding(t *testing.T) {
 	raw := gzipPayload(t, []byte("streamed index payload"))
 	var sawAcceptEncoding string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		sawAcceptEncoding = r.Header.Get(headerAcceptEncoding)
 		w.Header().Set(headerContentType, "application/octet-stream")
 		w.Header().Set(headerContentEncoding, "gzip")
 		_, _ = w.Write(raw)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = false
 	proxy.HTTPClient = upstream.Client()
 	w := httptest.NewRecorder()
 	// No Accept-Encoding on the client request -- the apk/apt/dnf case.
 	r := httptest.NewRequest(http.MethodGet, "/index", nil)
 	proxy.ProxyCached(w, r, upstream.URL+"/index", "apk", "stream-key", "*/*")
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want 200: %s", w.Code, w.Body.String())
 	}
 	if sawAcceptEncoding != "identity" {
 		t.Errorf("upstream saw Accept-Encoding %q, want %q", sawAcceptEncoding, "identity")
 	}
 	if !bytes.Equal(w.Body.Bytes(), raw) {
 		t.Errorf("streamed response altered the upstream bytes: got %d bytes, want %d", w.Body.Len(), len(raw))
 	}
 	if got := w.Header().Get(headerContentEncoding); got != "gzip" {
 		t.Errorf("Content-Encoding = %q, want %q", got, "gzip")
 	}
 }
 // TestFetchOrCacheMetadata_DirectCallersKeepTransparentCompression pins that
 // the parsing/rewriting ecosystems (npm, pypi, cargo, helm, ...) that call
 // FetchOrCacheMetadata directly are NOT forced to identity: they keep Go's
 // transparent transfer compression and receive decoded bytes, so a gzip-only
 // upstream does not regress them (no wire-size blowup, no parse failures).
 func TestFetchOrCacheMetadata_DirectCallersKeepTransparentCompression(t *testing.T) {
 	plaintext := []byte(`{"name":"demo","versions":{"1.0.0":{}}}`)
 	var sawAcceptEncoding string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		sawAcceptEncoding = r.Header.Get(headerAcceptEncoding)
 		// Serve gzip only when the client accepts it, like a real CDN.
 		if strings.Contains(r.Header.Get(headerAcceptEncoding), "gzip") {
 			w.Header().Set(headerContentType, contentTypeJSON)
 			w.Header().Set(headerContentEncoding, "gzip")
 			_, _ = w.Write(gzipPayload(t, plaintext))
 			return
 		}
 		w.Header().Set(headerContentType, contentTypeJSON)
 		_, _ = w.Write(plaintext)
 	}))
 	defer upstream.Close()
 	proxy, _, _, _ := setupTestProxy(t)
 	proxy.CacheMetadata = true
 	proxy.MetadataTTL = time.Hour
 	proxy.HTTPClient = upstream.Client()
 	body, _, err := proxy.FetchOrCacheMetadata(t.Context(), "npm", "demo", upstream.URL+"/demo", contentTypeJSON)
 	if err != nil {
 		t.Fatalf("FetchOrCacheMetadata() error = %v", err)
 	}
 	// The default transport adds Accept-Encoding: gzip and transparently
 	// decompresses, so the caller sees decoded JSON regardless of the wire form.
 	if sawAcceptEncoding == "identity" {
 		t.Errorf("direct caller forced identity; want transparent compression")
 	}
 	if !bytes.Equal(body, plaintext) {
 		t.Errorf("direct caller got %q, want decoded %q", body, plaintext)
 	}
 }
--- a/internal/handler/notfound_ecosystems_test.go
+++ b/internal/handler/notfound_ecosystems_test.go
@ -1,143 +0,0 @@
 package handler
 import (
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"github.com/git-pkgs/registries/fetch"
 )
 func TestArtifactDownloadUpstreamNotFoundReturns404(t *testing.T) {
 	tests := []struct {
 		name    string
 		path    string
 		handler func(p *Proxy) http.Handler
 	}{
 		{"debian", "/pool/main/n/nginx/nginx_1.18.0-6_amd64.deb",
 			func(p *Proxy) http.Handler { return NewDebianHandler(p, "http://localhost", "").Routes() }},
 		{"rpm", "/releases/39/Everything/x86_64/os/Packages/n/nginx-1.24.0-1.fc39.x86_64.rpm",
 			func(p *Proxy) http.Handler { return NewRPMHandler(p, "http://localhost").Routes() }},
 		{"apk", "/alpine/v3.22/main/x86_64/busybox-1.37.0-r12.apk",
 			func(p *Proxy) http.Handler { return NewAPKHandler(p, "http://localhost", nil).Routes() }},
 		{"nuget", "/v3-flatcontainer/newtonsoft.json/13.0.3/newtonsoft.json.13.0.3.nupkg",
 			func(p *Proxy) http.Handler { return NewNuGetHandler(p, "http://localhost").Routes() }},
 		{"pypi", "/packages/packages/ab/cd/ef0123456789/requests-2.31.0-py3-none-any.whl",
 			func(p *Proxy) http.Handler {
 				return NewPyPIHandlerWithUpstreams(p, "http://localhost", "", "").Routes()
 			}},
 		{"cran", "/src/contrib/ggplot2_3.4.4.tar.gz",
 			func(p *Proxy) http.Handler { return NewCRANHandler(p, "http://localhost").Routes() }},
 		{"conda", "/conda-forge/linux-64/numpy-1.26.0-py311_0.tar.bz2",
 			func(p *Proxy) http.Handler { return NewCondaHandler(p, "http://localhost").Routes() }},
 		{"conan", "/v1/files/zlib/1.3.1/_/_/0/recipe/conan_sources.tgz",
 			func(p *Proxy) http.Handler { return NewConanHandler(p, "http://localhost").Routes() }},
 		{"gem", "/gems/rails-7.1.0.gem",
 			func(p *Proxy) http.Handler { return NewGemHandler(p, "http://localhost").Routes() }},
 		{"hex", "/tarballs/phoenix-1.7.10.tar",
 			func(p *Proxy) http.Handler { return NewHexHandler(p, "http://localhost").Routes() }},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			proxy, _, _, fetcher := setupTestProxy(t)
 			fetcher.fetchErr = fetch.ErrNotFound
 			srv := httptest.NewServer(tt.handler(proxy))
 			defer srv.Close()
 			resp, err := http.Get(srv.URL + tt.path)
 			if err != nil {
 				t.Fatalf("request failed: %v", err)
 			}
 			defer func() { _ = resp.Body.Close() }()
 			if resp.StatusCode != http.StatusNotFound {
 				t.Errorf("want 404 for missing upstream artifact, got %d", resp.StatusCode)
 			}
 		})
 	}
 }
 func TestJuliaPackageUpstreamNotFoundReturns404(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErr = fetch.ErrNotFound
 	dead := httptest.NewServer(http.NotFoundHandler())
 	defer dead.Close()
 	h := NewJuliaHandler(proxy, "http://localhost")
 	h.upstreamURL = dead.URL
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	resp, err := http.Get(srv.URL +
 		"/package/7876af07-990d-54b4-ab0e-23690620f79a/0123456789abcdef0123456789abcdef01234567")
 	if err != nil {
 		t.Fatalf("request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusNotFound {
 		t.Errorf("want 404 for missing upstream package, got %d", resp.StatusCode)
 	}
 }
 func TestComposerDownloadUpstreamNotFoundReturns404(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErr = fetch.ErrNotFound
 	meta := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if r.URL.Path == "/p2/monolog/monolog.json" {
 			_, _ = w.Write([]byte(`{
 				"packages": {
 					"monolog/monolog": [
 						{"version": "2.9.1", "dist": {"url": "https://example.com/monolog-2.9.1.zip", "type": "zip"}}
 					]
 				}
 			}`))
 			return
 		}
 		http.NotFound(w, r)
 	}))
 	defer meta.Close()
 	h := &ComposerHandler{proxy: proxy, repoURL: meta.URL, proxyURL: "http://localhost"}
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	resp, err := http.Get(srv.URL + "/files/monolog/monolog/2.9.1/monolog-2.9.1.zip")
 	if err != nil {
 		t.Fatalf("request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusNotFound {
 		t.Errorf("want 404 for missing upstream dist, got %d", resp.StatusCode)
 	}
 }
 func TestContainerBlobUpstreamNotFoundReturns404(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErr = fetch.ErrNotFound
 	h := &ContainerHandler{
 		proxy:       proxy,
 		registryURL: "https://registry-1.docker.io",
 		proxyURL:    "http://localhost:8080",
 	}
 	req := httptest.NewRequest(http.MethodGet,
 		"/library/nginx/blobs/sha256:abc123def456abc123def456abc123def456abc123def456abc123def456abcd", nil)
 	w := httptest.NewRecorder()
 	h.Routes().ServeHTTP(w, req)
 	if w.Code != http.StatusNotFound {
 		t.Errorf("want 404 for missing upstream blob, got %d; body: %s", w.Code, w.Body.String())
 	}
 	if !strings.Contains(w.Body.String(), "BLOB_UNKNOWN") {
 		t.Errorf("want BLOB_UNKNOWN error code in body, got: %s", w.Body.String())
 	}
 }
--- a/internal/handler/notfound_test.go
+++ b/internal/handler/notfound_test.go
@ -1,83 +0,0 @@
 package handler
 import (
 	"context"
 	"errors"
 	"io"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"testing"
 	"github.com/git-pkgs/registries/fetch"
 )
 func TestErrUpstreamNotFoundWrapsFetchErrNotFound(t *testing.T) {
 	if !errors.Is(ErrUpstreamNotFound, fetch.ErrNotFound) {
 		t.Fatal("ErrUpstreamNotFound does not wrap fetch.ErrNotFound")
 	}
 }
 func TestGetOrFetchArtifactFromURL_NotFound(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErr = fetch.ErrNotFound
 	_, err := proxy.GetOrFetchArtifactFromURL(context.Background(),
 		"maven", "org.example:missing", "1.0", "missing-1.0.jar",
 		"http://upstream.test/org/example/missing/1.0/missing-1.0.jar")
 	if !errors.Is(err, ErrUpstreamNotFound) {
 		t.Fatalf("want ErrUpstreamNotFound, got %v", err)
 	}
 }
 func TestMavenHandler_UpstreamNotFoundReturns404(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErr = fetch.ErrNotFound
 	h := NewMavenHandler(proxy, "http://localhost", "http://upstream.test", "http://portal.test")
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	resp, err := http.Get(srv.URL + "/org/example/missing/1.0/missing-1.0.jar")
 	if err != nil {
 		t.Fatalf("request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusNotFound {
 		t.Errorf("want 404 for missing upstream artifact, got %d", resp.StatusCode)
 	}
 }
 func TestMavenHandler_PluginPortalFallback(t *testing.T) {
 	proxy, _, _, fetcher := setupTestProxy(t)
 	fetcher.fetchErrByURL = map[string]error{
 		"http://upstream.test/org/example/plugin/1.0/plugin-1.0.jar": fetch.ErrNotFound,
 	}
 	fetcher.artifact = &fetch.Artifact{
 		Body:        io.NopCloser(strings.NewReader("portal artifact")),
 		ContentType: "application/java-archive",
 	}
 	h := NewMavenHandler(proxy, "http://localhost", "http://upstream.test", "http://portal.test")
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	resp, err := http.Get(srv.URL + "/org/example/plugin/1.0/plugin-1.0.jar")
 	if err != nil {
 		t.Fatalf("request failed: %v", err)
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		t.Fatalf("want 200 via plugin portal fallback, got %d", resp.StatusCode)
 	}
 	body, _ := io.ReadAll(resp.Body)
 	if string(body) != "portal artifact" {
 		t.Errorf("want portal artifact body, got %q", body)
 	}
 	if fetcher.fetchedURL != "http://portal.test/org/example/plugin/1.0/plugin-1.0.jar" {
 		t.Errorf("fallback did not hit plugin portal, last URL: %s", fetcher.fetchedURL)
 	}
 }
--- a/internal/handler/npm.go
+++ b/internal/handler/npm.go
@ -2,19 +2,15 @@ package handler
 import (
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
 	"net/url"
 	"sort"
 	"strings"
 	"time"
 )
 const (
-	npmUpstream      = "https://registry.npmjs.org"
+	npmUpstream = "https://registry.npmjs.org"
 	npmAcceptDefault = "application/vnd.npm.install-v1+json;q=1.0, application/json;q=0.8"
 	scopedParts      = 2 // scope + name in scoped packages
 )
 // NPMHandler handles npm registry protocol requests.
@ -25,14 +21,10 @@ type NPMHandler struct {
 }
 // NewNPMHandler creates a new npm protocol handler.
-func NewNPMHandler(proxy *Proxy, proxyURL, upstreamURL string) *NPMHandler {
+func NewNPMHandler(proxy *Proxy, proxyURL string) *NPMHandler {
 	if strings.TrimSpace(upstreamURL) == "" {
 		upstreamURL = npmUpstream
 	}
 	return &NPMHandler{
 		proxy:       proxy,
-		upstreamURL: strings.TrimSuffix(upstreamURL, "/"),
+		upstreamURL: npmUpstream,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 }
@ -69,28 +61,37 @@ func (h *NPMHandler) handlePackageMetadata(w http.ResponseWriter, r *http.Reques
 	h.proxy.Logger.Info("npm metadata request", "package", packageName)
 	// Fetch metadata from upstream
 	upstreamURL := fmt.Sprintf("%s/%s", h.upstreamURL, url.PathEscape(packageName))
-	// Prefer the smaller abbreviated packument format but include application/json
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
-	// as a fallback so upstreams that reject the abbreviated type (e.g. JFrog
+	if err != nil {
-	// Artifactory, which returns 406) can still respond with full metadata.
+		JSONError(w, http.StatusInternalServerError, "failed to create request")
-	// When cooldown is enabled we must use full metadata exclusively because the
+		return
-	// abbreviated format omits the "time" map required for version age filtering.
+	}
-	// Operators can also force full metadata so clients that gate on publish
+	req.Header.Set("Accept", "application/json")
-	// age (for example Yarn's npmMinimalAgeGate) keep working through the proxy.
+
-	accept := npmAcceptDefault
+	resp, err := http.DefaultClient.Do(req)
-	if h.proxy.NPMFullMetadata || (h.proxy.Cooldown != nil && h.proxy.Cooldown.Enabled()) {
+	if err != nil {
-		accept = contentTypeJSON
+		h.proxy.Logger.Error("failed to fetch upstream metadata", "error", err)
 		JSONError(w, http.StatusBadGateway, "failed to fetch from upstream")
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode == http.StatusNotFound {
 		JSONError(w, http.StatusNotFound, "package not found")
 		return
 	}
 	if resp.StatusCode != http.StatusOK {
 		JSONError(w, http.StatusBadGateway, fmt.Sprintf("upstream returned %d", resp.StatusCode))
 		return
 	}
-	body, _, err := h.proxy.FetchOrCacheMetadata(r.Context(), "npm", packageName, upstreamURL, accept)
+	// Parse and rewrite tarball URLs
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
-		if errors.Is(err, ErrUpstreamNotFound) {
+		JSONError(w, http.StatusInternalServerError, "failed to read response")
 			JSONError(w, http.StatusNotFound, "package not found")
 			return
 		}
 		h.proxy.Logger.Error("failed to fetch npm metadata", "error", err)
 		JSONError(w, http.StatusBadGateway, "failed to fetch from upstream")
 		return
 	}
@ -98,19 +99,18 @@ func (h *NPMHandler) handlePackageMetadata(w http.ResponseWriter, r *http.Reques
 	if err != nil {
 		// If rewriting fails, just proxy the original
 		h.proxy.Logger.Warn("failed to rewrite metadata, proxying original", "error", err)
-		w.Header().Set(headerContentType, contentTypeJSON)
+		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 		_, _ = w.Write(body)
 		return
 	}
-	w.Header().Set(headerContentType, contentTypeJSON)
+	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(http.StatusOK)
 	_, _ = w.Write(rewritten)
 }
 // rewriteMetadata rewrites tarball URLs in npm package metadata to point at this proxy.
 // If cooldown is enabled, versions published too recently are filtered out.
 func (h *NPMHandler) rewriteMetadata(packageName string, body []byte) ([]byte, error) {
 	var metadata map[string]any
 	if err := json.Unmarshal(body, &metadata); err != nil {
@ -123,71 +123,6 @@ func (h *NPMHandler) rewriteMetadata(packageName string, body []byte) ([]byte, e
 		return body, nil // No versions to rewrite
 	}
 	h.applyCooldownFiltering(metadata, versions, packageName)
 	h.rewriteTarballURLs(versions, packageName)
 	return json.Marshal(metadata)
 }
 // applyCooldownFiltering removes versions that are too recently published,
 // and updates dist-tags.latest if the current latest was filtered out.
 func (h *NPMHandler) applyCooldownFiltering(metadata map[string]any, versions map[string]any, packageName string) {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		return
 	}
 	timeMap, _ := metadata["time"].(map[string]any)
 	if timeMap == nil {
 		return
 	}
 	packagePURL := canonicalPackagePURL("npm", packageName)
 	for version := range versions {
 		publishedStr, ok := timeMap[version].(string)
 		if !ok {
 			continue
 		}
 		publishedAt, err := time.Parse(time.RFC3339, publishedStr)
 		if err != nil {
 			continue
 		}
 		if !h.proxy.Cooldown.IsAllowed("npm", packagePURL, publishedAt) {
 			h.proxy.Logger.Info("cooldown: filtering npm version",
 				"package", packageName, "version", version,
 				"published", publishedStr)
 			delete(versions, version)
 			delete(timeMap, version)
 		}
 	}
 	h.updateDistTagsLatest(metadata, versions, timeMap)
 }
 // updateDistTagsLatest updates the dist-tags.latest field if the current latest
 // version was removed by cooldown filtering.
 func (h *NPMHandler) updateDistTagsLatest(metadata, versions, timeMap map[string]any) {
 	distTags, ok := metadata["dist-tags"].(map[string]any)
 	if !ok {
 		return
 	}
 	latest, ok := distTags["latest"].(string)
 	if !ok {
 		return
 	}
 	if _, exists := versions[latest]; exists {
 		return
 	}
 	if newLatest := h.findNewestVersion(versions, timeMap); newLatest != "" {
 		distTags["latest"] = newLatest
 	}
 }
 // rewriteTarballURLs rewrites all tarball URLs in version entries to point at this proxy.
 func (h *NPMHandler) rewriteTarballURLs(versions map[string]any, packageName string) {
 	for version, vdata := range versions {
 		vmap, ok := vdata.(map[string]any)
 		if !ok {
@ -199,56 +134,25 @@ func (h *NPMHandler) rewriteTarballURLs(versions map[string]any, packageName str
 			continue
 		}
-		tarball, ok := dist["tarball"].(string)
+		if tarball, ok := dist["tarball"].(string); ok {
-		if !ok {
+			// Extract filename from tarball URL
-			continue
+			filename := tarball
-		}
+			if idx := strings.LastIndex(tarball, "/"); idx >= 0 {
-
+				filename = tarball[idx+1:]
 		filename := tarball
 		if idx := strings.LastIndex(tarball, "/"); idx >= 0 {
 			filename = tarball[idx+1:]
 		}
 		escapedName := url.PathEscape(packageName)
 		newTarball := fmt.Sprintf("%s/npm/%s/-/%s", h.proxyURL, escapedName, filename)
 		dist["tarball"] = newTarball
 		h.proxy.Logger.Debug("rewrote tarball URL",
 			"package", packageName, "version", version,
 			"old", tarball, "new", newTarball)
 	}
 }
 // findNewestVersion returns the version string with the most recent timestamp
 // from the remaining versions, using the time map.
 func (h *NPMHandler) findNewestVersion(versions map[string]any, timeMap map[string]any) string {
 	if timeMap == nil {
 		return ""
 	}
 	type versionTime struct {
 		version string
 		t       time.Time
 	}
 	var vts []versionTime
 	for v := range versions {
 		if ts, ok := timeMap[v].(string); ok {
 			if t, err := time.Parse(time.RFC3339, ts); err == nil {
 				vts = append(vts, versionTime{v, t})
 			}
 			// Rewrite to our proxy URL
 			escapedName := url.PathEscape(packageName)
 			newTarball := fmt.Sprintf("%s/npm/%s/-/%s", h.proxyURL, escapedName, filename)
 			dist["tarball"] = newTarball
 			h.proxy.Logger.Debug("rewrote tarball URL",
 				"package", packageName, "version", version,
 				"old", tarball, "new", newTarball)
 		}
 	}
-	if len(vts) == 0 {
+	return json.Marshal(metadata)
 		return ""
 	}
 	sort.Slice(vts, func(i, j int) bool {
 		return vts[i].t.After(vts[j].t)
 	})
 	return vts[0].version
 }
 // handleDownload serves a package tarball, fetching and caching from upstream if needed.
@ -270,103 +174,16 @@ func (h *NPMHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
 	h.proxy.Logger.Info("npm download request",
 		"package", packageName, "version", version, "filename", filename)
-	if h.versionInCooldown(r, packageName, version) {
+	result, err := h.proxy.GetOrFetchArtifact(r.Context(), "npm", packageName, version, filename)
 		h.proxy.Logger.Info("cooldown: withholding npm tarball",
 			"package", packageName, "version", version)
 		JSONError(w, http.StatusNotFound, "version not found")
 		return
 	}
 	downloadURL := fmt.Sprintf(
 		"%s/%s/-/%s",
 		h.upstreamURL,
 		escapeNPMDownloadPackage(packageName),
 		url.PathEscape(filename),
 	)
 	result, err := h.proxy.GetOrFetchArtifactFromURL(
 		r.Context(), "npm", packageName, version, filename, downloadURL,
 	)
 	if err != nil {
-		switch {
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
-		case errors.Is(err, ErrUpstreamNotFound):
+		JSONError(w, http.StatusBadGateway, "failed to fetch package")
 			JSONError(w, http.StatusNotFound, "package not found")
 		case errors.Is(err, ErrArtifactBlocked):
 			JSONError(w, http.StatusForbidden, err.Error())
 		default:
 			h.proxy.Logger.Error("failed to get artifact", "error", err)
 			JSONError(w, http.StatusBadGateway, "failed to fetch package")
 		}
 		return
 	}
 	ServeArtifact(w, result)
 }
 // versionInCooldown reports whether a version is still inside the cooldown
 // window. Filtering the packument is not enough on its own: tarball URLs are
 // predictable and lockfiles record them directly, so `npm ci` reaches the
 // download path without ever requesting metadata.
 //
 // A version's publish time is immutable, so the check reads the stored
 // versions row first and only falls back to the packument for a version the
 // proxy has never seen, persisting the parsed time so the packument is
 // fetched and parsed at most once per version. A version with no usable
 // publish time is allowed through, matching how applyCooldownFiltering
 // treats it.
 func (h *NPMHandler) versionInCooldown(r *http.Request, packageName, version string) bool {
 	if h.proxy.Cooldown == nil || !h.proxy.Cooldown.Enabled() {
 		return false
 	}
 	versionPURL := canonicalVersionPURL("npm", packageName, version)
 	if ver, err := h.proxy.DB.GetVersionByPURL(versionPURL); err == nil && ver != nil && ver.PublishedAt.Valid {
 		return !h.proxy.Cooldown.IsAllowed("npm", canonicalPackagePURL("npm", packageName), ver.PublishedAt.Time)
 	}
 	upstreamURL := fmt.Sprintf("%s/%s", h.upstreamURL, url.PathEscape(packageName))
 	body, _, err := h.proxy.FetchOrCacheMetadata(r.Context(), "npm", packageName, upstreamURL, contentTypeJSON)
 	if err != nil {
 		h.proxy.Logger.Warn("cooldown: could not fetch npm metadata for download check",
 			"package", packageName, "version", version, "error", err)
 		return false
 	}
 	var metadata struct {
 		Time map[string]string `json:"time"`
 	}
 	if err := json.Unmarshal(body, &metadata); err != nil {
 		h.proxy.Logger.Warn("cooldown: could not parse npm metadata for download check",
 			"package", packageName, "version", version, "error", err)
 		return false
 	}
 	published, ok := metadata.Time[version]
 	if !ok {
 		return false
 	}
 	publishedAt, err := time.Parse(time.RFC3339, published)
 	if err != nil {
 		return false
 	}
 	if err := h.proxy.DB.SetVersionPublishedAt(versionPURL, canonicalPackagePURL("npm", packageName), publishedAt); err != nil {
 		h.proxy.Logger.Warn("cooldown: could not store npm publish time",
 			"package", packageName, "version", version, "error", err)
 	}
 	return !h.proxy.Cooldown.IsAllowed("npm", canonicalPackagePURL("npm", packageName), publishedAt)
 }
 func escapeNPMDownloadPackage(packageName string) string {
 	scope, name, scoped := strings.Cut(packageName, "/")
 	if scoped && strings.HasPrefix(scope, "@") && len(scope) > 1 && name != "" && !strings.Contains(name, "/") {
 		return url.PathEscape(scope) + "/" + url.PathEscape(name)
 	}
 	return url.PathEscape(packageName)
 }
 // extractPackageName extracts the package name from the request path.
 // Handles both scoped (@scope/name) and unscoped (name) packages.
 func (h *NPMHandler) extractPackageName(r *http.Request) string {
@ -420,7 +237,7 @@ func (h *NPMHandler) extractVersionFromFilename(packageName, filename string) st
 	// For scoped packages, the filename uses the short name
 	shortName := packageName
 	if strings.Contains(packageName, "/") {
-		parts := strings.SplitN(packageName, "/", scopedParts)
+		parts := strings.SplitN(packageName, "/", 2)
 		shortName = parts[1]
 	}
--- a/internal/handler/npm_test.go
+++ b/internal/handler/npm_test.go
@ -2,26 +2,15 @@ package handler
 import (
 	"encoding/json"
 	"errors"
 	"io"
 	"log/slog"
 	"net/http"
 	"net/http/httptest"
 	"strings"
 	"sync/atomic"
 	"testing"
 	"time"
 	"github.com/git-pkgs/cooldown"
 	"github.com/git-pkgs/registries/fetch"
 )
 const testVersion100 = "1.0.0"
 func testProxy() *Proxy {
 	return &Proxy{
-		Logger:     slog.Default(),
+		Logger: slog.Default(),
 		HTTPClient: http.DefaultClient,
 	}
 }
@ -37,9 +26,9 @@ func TestNPMExtractVersionFromFilename(t *testing.T) {
 		{"@babel/core", "core-7.23.0.tgz", "7.23.0"},
 		{"@types/node", "node-20.10.0.tgz", "20.10.0"},
 		{"express", "express-4.18.2.tgz", "4.18.2"},
-		{"lodash", "lodash.tgz", ""},         // no version
+		{"lodash", "lodash.tgz", ""},           // no version
-		{"lodash", "lodash-4.17.21.zip", ""}, // wrong extension
+		{"lodash", "lodash-4.17.21.zip", ""},   // wrong extension
-		{"lodash", "other-4.17.21.tgz", ""},  // wrong package name
+		{"lodash", "other-4.17.21.tgz", ""},    // wrong package name
 	}
 	for _, tt := range tests {
@ -51,86 +40,6 @@ func TestNPMExtractVersionFromFilename(t *testing.T) {
 	}
 }
 func TestNPMHandlerUsesConfiguredUpstream(t *testing.T) {
 	t.Run("metadata", func(t *testing.T) {
 		var requestPath, authHeader string
 		upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			requestPath = r.URL.Path
 			authHeader = r.Header.Get("Authorization")
 			if authHeader != "Bearer npm-token" {
 				w.WriteHeader(http.StatusUnauthorized)
 				return
 			}
 			w.Header().Set("Content-Type", "application/json")
 			_, _ = io.WriteString(w, `{"versions":{}}`)
 		}))
 		defer upstream.Close()
 		proxy, _, _, _ := setupTestProxy(t)
 		proxy.HTTPClient = upstream.Client()
 		proxy.AuthForURL = func(string) (string, string) {
 			return "Authorization", "Bearer npm-token"
 		}
 		h := NewNPMHandler(proxy, "http://proxy.test", upstream.URL+"/root/")
 		req := httptest.NewRequest(http.MethodGet, "/testpkg", nil)
 		w := httptest.NewRecorder()
 		h.Routes().ServeHTTP(w, req)
 		if w.Code != http.StatusOK {
 			t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 		}
 		if requestPath != "/root/testpkg" {
 			t.Errorf("upstream path = %q, want %q", requestPath, "/root/testpkg")
 		}
 		if authHeader != "Bearer npm-token" {
 			t.Errorf("Authorization = %q, want %q", authHeader, "Bearer npm-token")
 		}
 	})
 	t.Run("download", func(t *testing.T) {
 		proxy, _, _, artifactFetcher := setupTestProxy(t)
 		artifactFetcher.artifact = &fetch.Artifact{
 			Body:        io.NopCloser(strings.NewReader("package")),
 			ContentType: "application/gzip",
 		}
 		h := NewNPMHandler(proxy, "http://proxy.test", "https://npm.example.test/root/")
 		req := httptest.NewRequest(http.MethodGet, "/testpkg/-/testpkg-1.0.0.tgz", nil)
 		w := httptest.NewRecorder()
 		h.Routes().ServeHTTP(w, req)
 		if w.Code != http.StatusOK {
 			t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 		}
 		want := "https://npm.example.test/root/testpkg/-/testpkg-1.0.0.tgz"
 		if artifactFetcher.fetchedURL != want {
 			t.Errorf("fetched URL = %q, want %q", artifactFetcher.fetchedURL, want)
 		}
 	})
 	t.Run("scoped download", func(t *testing.T) {
 		proxy, _, _, artifactFetcher := setupTestProxy(t)
 		artifactFetcher.artifact = &fetch.Artifact{
 			Body:        io.NopCloser(strings.NewReader("package")),
 			ContentType: "application/gzip",
 		}
 		h := NewNPMHandler(proxy, "http://proxy.test", "https://npm.example.test/root/")
 		req := httptest.NewRequest(http.MethodGet, "/@scope/name/-/name-1.0.0.tgz", nil)
 		w := httptest.NewRecorder()
 		h.Routes().ServeHTTP(w, req)
 		if w.Code != http.StatusOK {
 			t.Fatalf("status = %d, want %d; body: %s", w.Code, http.StatusOK, w.Body.String())
 		}
 		want := "https://npm.example.test/root/@scope/name/-/name-1.0.0.tgz"
 		if artifactFetcher.fetchedURL != want {
 			t.Errorf("fetched URL = %q, want %q", artifactFetcher.fetchedURL, want)
 		}
 	})
 }
 func TestNPMRewriteMetadata(t *testing.T) {
 	h := &NPMHandler{
 		proxy:    testProxy(),
@ -259,7 +168,7 @@ func TestNPMHandlerMetadataProxy(t *testing.T) {
 	// Check that tarball URL was rewritten
 	versions := result["versions"].(map[string]any)
-	v := versions[testVersion100].(map[string]any)
+	v := versions["1.0.0"].(map[string]any)
 	dist := v["dist"].(map[string]any)
 	tarball := dist["tarball"].(string)
@ -268,191 +177,6 @@ func TestNPMHandlerMetadataProxy(t *testing.T) {
 	}
 }
 func TestNPMRewriteMetadataCooldown(t *testing.T) {
 	now := time.Now()
 	old := now.Add(-10 * 24 * time.Hour).Format(time.RFC3339)
 	recent := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{Default: "3d"}
 	h := &NPMHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	input := `{
 		"name": "testpkg",
 		"dist-tags": {"latest": "2.0.0"},
 		"time": {
 			"1.0.0": "` + old + `",
 			"2.0.0": "` + recent + `"
 		},
 		"versions": {
 			"1.0.0": {
 				"name": "testpkg",
 				"version": "1.0.0",
 				"dist": {
 					"tarball": "https://registry.npmjs.org/testpkg/-/testpkg-1.0.0.tgz"
 				}
 			},
 			"2.0.0": {
 				"name": "testpkg",
 				"version": "2.0.0",
 				"dist": {
 					"tarball": "https://registry.npmjs.org/testpkg/-/testpkg-2.0.0.tgz"
 				}
 			}
 		}
 	}`
 	output, err := h.rewriteMetadata("testpkg", []byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	versions := result["versions"].(map[string]any)
 	// Old version should remain
 	if _, ok := versions[testVersion100]; !ok {
 		t.Error("version 1.0.0 should not be filtered")
 	}
 	// Recent version should be filtered
 	if _, ok := versions["2.0.0"]; ok {
 		t.Error("version 2.0.0 should be filtered by cooldown")
 	}
 	// dist-tags.latest should be updated to 1.0.0
 	distTags := result["dist-tags"].(map[string]any)
 	if distTags["latest"] != testVersion100 {
 		t.Errorf("dist-tags.latest = %q, want %q", distTags["latest"], testVersion100)
 	}
 }
 func TestNPMRewriteMetadataCooldownExemptPackage(t *testing.T) {
 	now := time.Now()
 	recent := now.Add(-1 * time.Hour).Format(time.RFC3339)
 	proxy := testProxy()
 	proxy.Cooldown = &cooldown.Config{
 		Default:  "3d",
 		Packages: map[string]string{"pkg:npm/testpkg": "0"},
 	}
 	h := &NPMHandler{
 		proxy:    proxy,
 		proxyURL: "http://localhost:8080",
 	}
 	input := `{
 		"name": "testpkg",
 		"time": {"1.0.0": "` + recent + `"},
 		"versions": {
 			"1.0.0": {
 				"name": "testpkg",
 				"version": "1.0.0",
 				"dist": {"tarball": "https://registry.npmjs.org/testpkg/-/testpkg-1.0.0.tgz"}
 			}
 		}
 	}`
 	output, err := h.rewriteMetadata("testpkg", []byte(input))
 	if err != nil {
 		t.Fatalf("rewriteMetadata failed: %v", err)
 	}
 	var result map[string]any
 	if err := json.Unmarshal(output, &result); err != nil {
 		t.Fatalf("failed to parse output: %v", err)
 	}
 	versions := result["versions"].(map[string]any)
 	if _, ok := versions[testVersion100]; !ok {
 		t.Error("exempt package version should not be filtered")
 	}
 }
 func TestNPMHandlerUsesAbbreviatedMetadata(t *testing.T) {
 	var gotAccept string
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		gotAccept = r.Header.Get("Accept")
 		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write([]byte(`{
 			"name": "testpkg",
 			"versions": {
 				"1.0.0": {
 					"name": "testpkg",
 					"version": "1.0.0",
 					"dist": {
 						"tarball": "https://registry.npmjs.org/testpkg/-/testpkg-1.0.0.tgz"
 					}
 				}
 			}
 		}`))
 	}))
 	defer upstream.Close()
 	t.Run("no cooldown uses combined accept header", func(t *testing.T) {
 		h := &NPMHandler{
 			proxy:       testProxy(),
 			upstreamURL: upstream.URL,
 			proxyURL:    "http://proxy.local",
 		}
 		req := httptest.NewRequest(http.MethodGet, "/testpkg", nil)
 		w := httptest.NewRecorder()
 		h.handlePackageMetadata(w, req)
 		if gotAccept != npmAcceptDefault {
 			t.Errorf("Accept = %q, want %q", gotAccept, npmAcceptDefault)
 		}
 	})
 	t.Run("cooldown enabled uses full metadata only", func(t *testing.T) {
 		proxy := testProxy()
 		proxy.Cooldown = &cooldown.Config{Default: "3d"}
 		h := &NPMHandler{
 			proxy:       proxy,
 			upstreamURL: upstream.URL,
 			proxyURL:    "http://proxy.local",
 		}
 		req := httptest.NewRequest(http.MethodGet, "/testpkg", nil)
 		w := httptest.NewRecorder()
 		h.handlePackageMetadata(w, req)
 		if gotAccept != contentTypeJSON {
 			t.Errorf("Accept = %q, want %q (cooldown requires full metadata)", gotAccept, contentTypeJSON)
 		}
 	})
 	t.Run("full metadata option uses full metadata without cooldown", func(t *testing.T) {
 		proxy := testProxy()
 		proxy.NPMFullMetadata = true
 		h := &NPMHandler{
 			proxy:       proxy,
 			upstreamURL: upstream.URL,
 			proxyURL:    "http://proxy.local",
 		}
 		req := httptest.NewRequest(http.MethodGet, "/testpkg", nil)
 		w := httptest.NewRecorder()
 		h.handlePackageMetadata(w, req)
 		if gotAccept != contentTypeJSON {
 			t.Errorf("Accept = %q, want %q (npm_full_metadata requires full metadata)", gotAccept, contentTypeJSON)
 		}
 	})
 }
 func TestNPMHandlerMetadataNotFound(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusNotFound)
@ -475,237 +199,3 @@ func TestNPMHandlerMetadataNotFound(t *testing.T) {
 		t.Errorf("status = %d, want %d", w.Code, http.StatusNotFound)
 	}
 }
 func TestNPMDownloadCooldown(t *testing.T) {
 	now := time.Now()
 	packument := `{
 		"name": "leftpad",
 		"dist-tags": {"latest": "2.0.0"},
 		"time": {
 			"1.0.0": "` + now.Add(-30*24*time.Hour).Format(time.RFC3339) + `",
 			"2.0.0": "` + now.Add(-1*time.Hour).Format(time.RFC3339) + `"
 		},
 		"versions": {"1.0.0": {}, "2.0.0": {}}
 	}`
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		w.Header().Set("Content-Type", contentTypeJSON)
 		_, _ = io.WriteString(w, packument)
 	}))
 	defer upstream.Close()
 	tests := []struct {
 		name       string
 		version    string
 		wantStatus int
 	}{
 		{"published before the window serves the tarball", testVersion100, http.StatusOK},
 		{"published inside the window is withheld", "2.0.0", http.StatusNotFound},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			proxy, _, _, fetcher := setupTestProxy(t)
 			proxy.HTTPClient = upstream.Client()
 			proxy.Cooldown = &cooldown.Config{Default: "7d"}
 			fetcher.artifact = &fetch.Artifact{
 				Body:        io.NopCloser(strings.NewReader("tarball data")),
 				ContentType: "application/octet-stream",
 			}
 			h := NewNPMHandler(proxy, "http://proxy.test", upstream.URL)
 			srv := httptest.NewServer(h.Routes())
 			defer srv.Close()
 			resp, err := http.Get(srv.URL + "/leftpad/-/leftpad-" + tt.version + ".tgz")
 			if err != nil {
 				t.Fatalf("request failed: %v", err)
 			}
 			defer func() { _ = resp.Body.Close() }()
 			if resp.StatusCode != tt.wantStatus {
 				t.Errorf("status = %d, want %d", resp.StatusCode, tt.wantStatus)
 			}
 			if tt.wantStatus == http.StatusNotFound && fetcher.fetchCalled {
 				t.Error("fetched a version that is still inside the cooldown window")
 			}
 		})
 	}
 }
 func TestNPMDownloadCooldownDisabled(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		t.Error("metadata must not be fetched when cooldown is disabled")
 		w.WriteHeader(http.StatusInternalServerError)
 	}))
 	defer upstream.Close()
 	proxy, _, _, fetcher := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	fetcher.artifact = &fetch.Artifact{
 		Body:        io.NopCloser(strings.NewReader("tarball data")),
 		ContentType: "application/octet-stream",
 	}
 	h := NewNPMHandler(proxy, "http://proxy.test", upstream.URL)
 	if h.versionInCooldown(httptest.NewRequest(http.MethodGet, "/", nil), "leftpad", testVersion100) {
 		t.Error("versionInCooldown = true, want false when cooldown is not configured")
 	}
 }
 func TestNPMDownloadCooldownUsesStoredPublishTime(t *testing.T) {
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		t.Error("metadata must not be fetched when the publish time is already stored")
 		w.WriteHeader(http.StatusInternalServerError)
 	}))
 	defer upstream.Close()
 	tests := []struct {
 		name        string
 		version     string
 		publishedAt time.Time
 		wantStatus  int
 	}{
 		{"stored time before the window serves the tarball", testVersion100, time.Now().Add(-30 * 24 * time.Hour), http.StatusOK},
 		{"stored time inside the window is withheld", "2.0.0", time.Now().Add(-1 * time.Hour), http.StatusNotFound},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			proxy, db, _, fetcher := setupTestProxy(t)
 			proxy.HTTPClient = upstream.Client()
 			proxy.Cooldown = &cooldown.Config{Default: "7d"}
 			fetcher.artifact = &fetch.Artifact{
 				Body:        io.NopCloser(strings.NewReader("tarball data")),
 				ContentType: "application/octet-stream",
 			}
 			if err := db.SetVersionPublishedAt("pkg:npm/leftpad@"+tt.version, "pkg:npm/leftpad", tt.publishedAt); err != nil {
 				t.Fatalf("seeding publish time failed: %v", err)
 			}
 			h := NewNPMHandler(proxy, "http://proxy.test", upstream.URL)
 			srv := httptest.NewServer(h.Routes())
 			defer srv.Close()
 			resp, err := http.Get(srv.URL + "/leftpad/-/leftpad-" + tt.version + ".tgz")
 			if err != nil {
 				t.Fatalf("request failed: %v", err)
 			}
 			defer func() { _ = resp.Body.Close() }()
 			if resp.StatusCode != tt.wantStatus {
 				t.Errorf("status = %d, want %d", resp.StatusCode, tt.wantStatus)
 			}
 		})
 	}
 }
 func TestNPMDownloadCooldownFetchesMetadataOnce(t *testing.T) {
 	now := time.Now()
 	packument := `{
 		"name": "leftpad",
 		"dist-tags": {"latest": "1.0.0"},
 		"time": {
 			"1.0.0": "` + now.Add(-30*24*time.Hour).Format(time.RFC3339) + `"
 		},
 		"versions": {"1.0.0": {}}
 	}`
 	var metadataRequests atomic.Int64
 	upstream := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
 		metadataRequests.Add(1)
 		w.Header().Set("Content-Type", contentTypeJSON)
 		_, _ = io.WriteString(w, packument)
 	}))
 	defer upstream.Close()
 	proxy, _, _, fetcher := setupTestProxy(t)
 	proxy.HTTPClient = upstream.Client()
 	proxy.Cooldown = &cooldown.Config{Default: "7d"}
 	h := NewNPMHandler(proxy, "http://proxy.test", upstream.URL)
 	srv := httptest.NewServer(h.Routes())
 	defer srv.Close()
 	// The first download parses the packument once and persists the publish
 	// time; caching the artifact afterwards upserts the versions row without a
 	// publish time, which must not erase the stored value. The second download
 	// must answer from the stored time alone.
 	for i := 0; i < 2; i++ {
 		fetcher.artifact = &fetch.Artifact{
 			Body:        io.NopCloser(strings.NewReader("tarball data")),
 			ContentType: "application/octet-stream",
 		}
 		resp, err := http.Get(srv.URL + "/leftpad/-/leftpad-" + testVersion100 + ".tgz")
 		if err != nil {
 			t.Fatalf("request %d failed: %v", i+1, err)
 		}
 		_ = resp.Body.Close()
 		if resp.StatusCode != http.StatusOK {
 			t.Fatalf("request %d status = %d, want %d", i+1, resp.StatusCode, http.StatusOK)
 		}
 	}
 	if got := metadataRequests.Load(); got != 1 {
 		t.Errorf("metadata requests = %d, want 1", got)
 	}
 }
 // TestNPMDownloadErrorResponsesAreJSON guards against a regression where
 // routing handleDownload's error path through the shared serveArtifactError
 // helper silently switched npm's 404/502 tarball error bodies from JSON to
 // plain text; npm clients expect a JSON {"error": "..."} body on every
 // download failure, including the newer scan-blocked (403) case.
 func TestNPMDownloadErrorResponsesAreJSON(t *testing.T) {
 	tests := []struct {
 		name       string
 		fetchErr   error
 		blocked    bool
 		wantStatus int
 	}{
 		{"upstream not found", fetch.ErrNotFound, false, http.StatusNotFound},
 		{"upstream failure", errors.New("connection refused"), false, http.StatusBadGateway},
 		{"blocked by scan", nil, true, http.StatusForbidden},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			proxy, _, _, fetcher := setupTestProxy(t)
 			proxy.ScanSigningKey = []byte("test-signing-key")
 			if tt.blocked {
 				proxy.Scanners = newTestScanGroup(t, newTestScanServer(t, false, "malware detected").URL, false)
 			}
 			fetcher.fetchErr = tt.fetchErr
 			fetcher.artifact = &fetch.Artifact{
 				Body:        io.NopCloser(strings.NewReader("tarball data")),
 				ContentType: "application/octet-stream",
 			}
 			h := NewNPMHandler(proxy, "http://proxy.test", "http://upstream.invalid")
 			srv := httptest.NewServer(h.Routes())
 			defer srv.Close()
 			resp, err := http.Get(srv.URL + "/leftpad/-/leftpad-1.0.0.tgz")
 			if err != nil {
 				t.Fatalf("request failed: %v", err)
 			}
 			defer func() { _ = resp.Body.Close() }()
 			if resp.StatusCode != tt.wantStatus {
 				t.Errorf("status = %d, want %d", resp.StatusCode, tt.wantStatus)
 			}
 			if ct := resp.Header.Get("Content-Type"); ct != contentTypeJSON {
 				t.Errorf("Content-Type = %q, want %q", ct, contentTypeJSON)
 			}
 			var body map[string]any
 			if err := json.NewDecoder(resp.Body).Decode(&body); err != nil {
 				t.Fatalf("response body is not valid JSON: %v", err)
 			}
 			if _, ok := body["error"]; !ok {
 				t.Errorf("response body %v missing \"error\" key", body)
 			}
 		})
 	}
 }
--- a/internal/handler/nuget.go
+++ b/internal/handler/nuget.go
@ -2,7 +2,6 @@ package handler
 import (
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
@ -10,15 +9,13 @@ import (
 )
 const (
-	nugetUpstream       = "https://api.nuget.org"
+	nugetUpstream = "https://api.nuget.org"
 	nugetSearchUpstream = "https://azuresearch-usnc.nuget.org"
 )
 // NuGetHandler handles NuGet V3 API protocol requests.
 type NuGetHandler struct {
 	proxy       *Proxy
 	upstreamURL string
 	searchURL   string
 	proxyURL    string
 }
@ -27,20 +24,10 @@ func NewNuGetHandler(proxy *Proxy, proxyURL string) *NuGetHandler {
 	return &NuGetHandler{
 		proxy:       proxy,
 		upstreamURL: nugetUpstream,
 		searchURL:   nugetSearchUpstream,
 		proxyURL:    strings.TrimSuffix(proxyURL, "/"),
 	}
 }
 // NewNuGetHandlerWithUpstreams creates a NuGet handler with custom API and
 // search upstreams.
 func NewNuGetHandlerWithUpstreams(proxy *Proxy, proxyURL, upstreamURL, searchURL string) *NuGetHandler {
 	h := NewNuGetHandler(proxy, proxyURL)
 	h.upstreamURL = configuredUpstreamURL(upstreamURL, nugetUpstream)
 	h.searchURL = configuredUpstreamURL(searchURL, nugetSearchUpstream)
 	return h
 }
 // Routes returns the HTTP handler for NuGet requests.
 func (h *NuGetHandler) Routes() http.Handler {
 	mux := http.NewServeMux()
@ -50,12 +37,10 @@ func (h *NuGetHandler) Routes() http.Handler {
 	// Package content (downloads)
 	mux.HandleFunc("GET /v3-flatcontainer/{id}/{version}/{filename}", h.handleDownload)
-	mux.HandleFunc("GET /v3-flatcontainer/{id}/index.json", h.handleVersionList)
+	mux.HandleFunc("GET /v3-flatcontainer/{id}/index.json", h.proxyUpstream)
 	// Registration (package metadata) - use prefix matching since {version}.json isn't allowed
-	for _, prefix := range nugetRegistrationPrefixes {
+	mux.HandleFunc("GET /v3/registration5-gz-semver2/", h.proxyUpstream)
 		mux.HandleFunc("GET "+prefix, h.handleRegistration)
 	}
 	// Search
 	mux.HandleFunc("GET /query", h.proxyUpstream)
@ -72,30 +57,41 @@ func (h *NuGetHandler) handleServiceIndex(w http.ResponseWriter, r *http.Request
 	upstreamURL := h.upstreamURL + "/v3/index.json"
-	body, _, err := h.proxy.FetchOrCacheMetadata(r.Context(), "nuget", "_service_index", upstreamURL)
+	req, err := http.NewRequestWithContext(r.Context(), http.MethodGet, upstreamURL, nil)
 	if err != nil {
 		http.Error(w, "failed to create request", http.StatusInternalServerError)
 		return
 	}
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		if errors.Is(err, ErrUpstreamNotFound) {
 			http.Error(w, "not found", http.StatusNotFound)
 			return
 		}
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode != http.StatusOK {
 		w.WriteHeader(resp.StatusCode)
 		_, _ = io.Copy(w, resp.Body)
 		return
 	}
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		http.Error(w, "failed to read response", http.StatusInternalServerError)
 		return
 	}
 	rewritten, err := h.rewriteServiceIndex(body)
 	if err != nil {
 		if h.cooldownEnabled() {
 			h.nugetMetadataError(w, err)
 			return
 		}
 		h.proxy.Logger.Warn("failed to rewrite service index, proxying original", "error", err)
-		w.Header().Set(headerContentType, "application/json")
+		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write(body)
 		return
 	}
-	w.Header().Set(headerContentType, "application/json")
+	w.Header().Set("Content-Type", "application/json")
 	_, _ = w.Write(rewritten)
 }
@ -120,35 +116,55 @@ func (h *NuGetHandler) rewriteServiceIndex(body []byte) ([]byte, error) {
 		id, _ := rmap["@id"].(string)
 		rtype, _ := rmap["@type"].(string)
-		// Rewrite URLs for services we proxy. The service type determines the
+		// Rewrite URLs for services we proxy
-		// local route because an upstream index may advertise a different host.
+		if id != "" && h.shouldRewriteService(rtype) {
-		if id != "" {
+			newURL := h.rewriteNuGetURL(id)
-			rmap["@id"] = h.rewriteNuGetURL(id, rtype)
+			rmap["@id"] = newURL
 		}
 	}
 	return json.Marshal(index)
 }
-// rewriteNuGetURL rewrites a NuGet service URL based on its advertised type.
+// shouldRewriteService returns true if the service type should be rewritten.
-// Service types the proxy does not handle are returned unchanged.
+func (h *NuGetHandler) shouldRewriteService(serviceType string) bool {
-func (h *NuGetHandler) rewriteNuGetURL(origURL, serviceType string) string {
+	// Rewrite package content and registration services
-	switch serviceType {
+	rewriteTypes := []string{
-	case "PackageBaseAddress/3.0.0":
+		"PackageBaseAddress/3.0.0",
-		return h.proxyURL + "/nuget/v3-flatcontainer/"
+		"RegistrationsBaseUrl/3.6.0",
-	case "RegistrationsBaseUrl", "RegistrationsBaseUrl/3.0.0-beta", "RegistrationsBaseUrl/3.0.0-rc":
+		"RegistrationsBaseUrl/Versioned",
-		return h.proxyURL + "/nuget/v3/registration5-semver1/"
+		"SearchQueryService",
-	case "RegistrationsBaseUrl/3.4.0":
+		"SearchQueryService/3.0.0-rc",
-		return h.proxyURL + "/nuget/v3/registration5-gz-semver1/"
+		"SearchQueryService/3.5.0",
-	case "RegistrationsBaseUrl/3.6.0", "RegistrationsBaseUrl/Versioned":
+		"SearchAutocompleteService",
-		return h.proxyURL + "/nuget/v3/registration5-gz-semver2/"
+		"SearchAutocompleteService/3.5.0",
 	case "SearchQueryService", "SearchQueryService/3.0.0-rc", "SearchQueryService/3.5.0":
 		return h.proxyURL + "/nuget/query"
 	case "SearchAutocompleteService", "SearchAutocompleteService/3.5.0":
 		return h.proxyURL + "/nuget/autocomplete"
 	default:
 		return origURL
 	}
 	for _, t := range rewriteTypes {
 		if serviceType == t {
 			return true
 		}
 	}
 	return false
 }
 // rewriteNuGetURL rewrites a NuGet API URL to point at this proxy.
 func (h *NuGetHandler) rewriteNuGetURL(origURL string) string {
 	// Map known NuGet API endpoints to our proxy paths
 	replacements := map[string]string{
 		"https://api.nuget.org/v3-flatcontainer/":           h.proxyURL + "/nuget/v3-flatcontainer/",
 		"https://api.nuget.org/v3/registration5-gz-semver2/": h.proxyURL + "/nuget/v3/registration5-gz-semver2/",
 		"https://azuresearch-usnc.nuget.org/query":          h.proxyURL + "/nuget/query",
 		"https://azuresearch-usnc.nuget.org/autocomplete":   h.proxyURL + "/nuget/autocomplete",
 	}
 	for old, new := range replacements {
 		if strings.HasPrefix(origURL, old) {
 			return strings.Replace(origURL, old, new, 1)
 		}
 	}
 	return origURL
 }
 // handleDownload serves a package file, fetching and caching from upstream if needed.
@ -162,18 +178,6 @@ func (h *NuGetHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	if h.cooldownEnabled() {
 		allowed, err := h.nugetDownloadAllowed(r.Context(), id, version)
 		if err != nil {
 			h.nugetMetadataError(w, err)
 			return
 		}
 		if !allowed {
 			JSONError(w, http.StatusNotFound, "version not found")
 			return
 		}
 	}
 	// Only cache .nupkg files
 	if !strings.HasSuffix(filename, ".nupkg") {
 		h.proxyUpstream(w, r)
@ -189,7 +193,8 @@ func (h *NuGetHandler) handleDownload(w http.ResponseWriter, r *http.Request) {
 	result, err := h.proxy.GetOrFetchArtifactFromURL(r.Context(), "nuget", name, version, filename, upstreamURL)
 	if err != nil {
-		h.proxy.serveArtifactError(w, err, "failed to fetch package")
+		h.proxy.Logger.Error("failed to get artifact", "error", err)
 		http.Error(w, "failed to fetch package", http.StatusBadGateway)
 		return
 	}
@ -210,11 +215,11 @@ func (h *NuGetHandler) proxyUpstream(w http.ResponseWriter, r *http.Request) {
 	}
 	// Copy accept-encoding for compression
-	if ae := r.Header.Get(headerAcceptEncoding); ae != "" {
+	if ae := r.Header.Get("Accept-Encoding"); ae != "" {
-		req.Header.Set(headerAcceptEncoding, ae)
+		req.Header.Set("Accept-Encoding", ae)
 	}
-	resp, err := h.proxy.HTTPClient.Do(req)
+	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		h.proxy.Logger.Error("upstream request failed", "error", err)
 		http.Error(w, "upstream request failed", http.StatusBadGateway)
@ -238,7 +243,7 @@ func (h *NuGetHandler) buildUpstreamURL(r *http.Request) string {
 	// Handle query and autocomplete which go to azuresearch
 	if strings.HasPrefix(path, "/query") || strings.HasPrefix(path, "/autocomplete") {
-		return h.searchURL + path + "?" + r.URL.RawQuery
+		return "https://azuresearch-usnc.nuget.org" + path + "?" + r.URL.RawQuery
 	}
 	return h.upstreamURL + path
--- a/Show more
+++ b/Show more