add release action

Author: rk234

.github/workflows/release.yml

@@ -0,0 +1,90 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+
+      - name: Run tests
+        run: npm test
+
+      - name: Build
+        run: npm run build
+
+      - name: Extract version from package.json
+        id: pkg
+        run: |
+          VERSION=$(node -p "require('./package.json').version")
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+      - name: Create npm tarball
+        run: npm pack
+
+      - name: Check if release already exists
+        id: check_release
+        run: |
+          TAG="v${{ steps.pkg.outputs.version }}"
+          if gh release view "$TAG" > /dev/null 2>&1; then
+            echo "exists=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "exists=false" >> "$GITHUB_OUTPUT"
+          fi
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Generate release notes
+        if: steps.check_release.outputs.exists == 'false'
+        id: notes
+        run: |
+          TAG="v${{ steps.pkg.outputs.version }}"
+          GENERATED=$(gh api repos/${{ github.repository }}/releases/generate-notes \
+            -f tag_name="$TAG" \
+            -f target_commitish=main \
+            --jq '.body')
+          TARBALL_URL="https://github.com/${{ github.repository }}/releases/download/${TAG}/flame-cli-${{ steps.pkg.outputs.version }}.tgz"
+          BODY="${GENERATED}
+
+          ## Install
+
+          \`\`\`bash
+          npm install -g ${TARBALL_URL}
+          \`\`\`"
+
+          {
+            echo "body<<RELEASE_NOTES_EOF"
+            echo "$BODY"
+            echo "RELEASE_NOTES_EOF"
+          } >> "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create GitHub Release
+        if: steps.check_release.outputs.exists == 'false'
+        run: |
+          TAG="v${{ steps.pkg.outputs.version }}"
+          gh release create "$TAG" \
+            flame-cli-${{ steps.pkg.outputs.version }}.tgz \
+            --title "$TAG" \
+            --notes "${{ steps.notes.outputs.body }}"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}