ci(release): parallelize multi-arch builds, add registry cache, fix release tag ref; gate MCP publish after PyPI+manifest\n\nchore(project): update description to <=100 chars for MCP registry

Author: mcp-release-bot

.github/workflows/release.yml

@@ -63,12 +63,16 @@ jobs:
         with:
           password: ${{ secrets.PYPI_API_TOKEN }}
 
-  docker_build_push:
-    name: Build & push multi-arch image
+  docker_build_by_platform:
+    name: Build image per-arch and push by digest (${{ matrix.platform }})
     runs-on: ubuntu-latest
     permissions:
       contents: read
       packages: write
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [linux/amd64, linux/arm64]
     steps:
       - uses: actions/checkout@v5
       - name: Extract version from tag
@@ -81,6 +85,10 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - id: meta
         uses: docker/metadata-action@v5
         with:
@@ -91,18 +99,77 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=semver,pattern={{major}}
             type=raw,value=latest,enable={{is_default_branch}}
-      - uses: docker/setup-buildx-action@v3
-      - uses: docker/build-push-action@v6
+      - name: Build and push by digest (${{ matrix.platform }})
+        id: build
+        uses: docker/build-push-action@v6
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          platforms: ${{ matrix.platform }}
           build-args: |
             VERSION=${{ steps.ver.outputs.VERSION }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          labels: ${{ steps.meta.outputs.labels }}
+          outputs: type=image,push-by-digest=true,name-canonical=true,push=true
+          cache-from: |
+            type=gha
+            type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache
+            type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-${{ github.ref_name }}
+          cache-to: |
+            type=gha,mode=max
+            type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache,mode=max
+            type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache-${{ github.ref_name }},mode=max
+          provenance: false
+          sbom: false
+      - name: Export digest
+        run: |
+          mkdir -p "${{ runner.temp }}/digests"
+          digest="${{ steps.build.outputs.digest }}"
+          touch "${{ runner.temp }}/digests/${digest#sha256:}"
+      - name: Upload digest
+        uses: actions/upload-artifact@v4
+        with:
+          name: digests-${{ matrix.platform }}
+          path: ${{ runner.temp }}/digests/*
+          if-no-files-found: error
+          retention-days: 1
+
+  docker_merge_manifest:
+    name: Create and push multi-arch manifest
+    runs-on: ubuntu-latest
+    needs: docker_build_by_platform
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - uses: docker/setup-buildx-action@v3
+      - id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=tag
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=raw,value=latest,enable={{is_default_branch}}
+      - name: Download digests
+        uses: actions/download-artifact@v4
+        with:
+          path: ${{ runner.temp }}/digests
+          pattern: digests-*
+          merge-multiple: true
+      - name: Create manifest list and push
+        working-directory: ${{ runner.temp }}/digests
+        run: |
+          docker buildx imagetools create \
+            $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "${DOCKER_METADATA_OUTPUT_JSON}") \
+            $(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)
+      - name: Inspect image
+        run: docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}
 
   create_release:
     name: Create GitHub Release with artifacts
@@ -128,8 +195,8 @@ jobs:
           path: dist
       - uses: softprops/action-gh-release@v2
         with:
-          tag_name: ${GITHUB_REF#refs/tags/}
-          name: Release ${GITHUB_REF#refs/tags/}
+          tag_name: ${{ github.ref_name }}
+          name: Release ${{ github.ref_name }}
           body: ${{ steps.changelog.outputs.CHANGELOG }}
           draft: false
           prerelease: false
@@ -139,6 +206,7 @@ jobs:
 
   publish_mcp_registry:
     name: Publish to MCP Registry (preview)
+    needs: [publish_pypi, docker_merge_manifest]
     runs-on: ubuntu-latest
     permissions:
       contents: read
@@ -162,7 +230,7 @@ jobs:
           VERSION = os.environ['VERSION']
           with open('pyproject.toml','rb') as f:
               proj = tomllib.load(f)['project']
-          desc = proj.get('description','')
+          desc = (proj.get('description','') or '')[:100]  # MCP Registry requires <= 100 chars
           data = {
             "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
             "name": "io.github.othervibes/mcp-as-a-judge",

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "mcp-as-a-judge"
 version = "0.3.1"
-description = "MCP as a Judge: An AI-powered Model Context Protocol server that provides code review, validation, and quality assessment tools for development workflows"
+description = "MCP as a Judge: a behavioral MCP that strengthens AI coding assistants via explicit LLM evaluations"
 readme = "README.md"
 license = { text = "MIT" }
 authors = [