feat(ci): generate changelogs with Claude Code

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: z4nr34l

.github/workflows/publish.yml

@@ -14,6 +14,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - uses: docker/login-action@v3
         with:
@@ -43,8 +45,26 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
+      - name: Generate changelog with Claude Code
+        id: changelog
+        env:
+          CLAUDE_CODE_OAUTH_TOKEN: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          TAG_NAME: ${{ github.ref_name }}
+        run: |
+          npm install -g @anthropic-ai/claude-code
+          PREV_TAG=$(git tag --sort=-v:refname | grep '^v' | sed -n '2p')
+          DIFF=$(git log --oneline "${PREV_TAG}..${TAG_NAME}" 2>/dev/null || git log --oneline -20)
+          CHANGELOG=$(echo "$DIFF" | claude -p \
+            "Generate a concise changelog for release ${TAG_NAME} of a devcontainer project. Group changes by category (Features, Fixes, Docs, Chores). Use markdown with bullet points. No preamble, just the changelog. Here are the commits:" \
+            --output-format text)
+          {
+            echo "body<<CHANGELOG_EOF"
+            echo "$CHANGELOG"
+            echo "CHANGELOG_EOF"
+          } >> "$GITHUB_OUTPUT"
+
       - name: Create GitHub Release
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TAG_NAME: ${{ github.ref_name }}
-        run: gh release create "$TAG_NAME" --generate-notes
+        run: gh release create "$TAG_NAME" --notes "${{ steps.changelog.outputs.body }}"