ci: add secure automated release workflow (#615)

* ci: add secure automated release workflow

* ci: fix release-please action pin

.github/workflows/release.yml

@@ -0,0 +1,84 @@
+name: Auto Release
+
+on:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: auto-release-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  release-please:
+    name: Release Please
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+      tag_name: ${{ steps.release.outputs.tag_name }}
+      version: ${{ steps.release.outputs.version }}
+    steps:
+      - name: Run release-please
+        id: release
+        uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          release-type: node
+          package-name: '@gitlawb/openclaude'
+
+  publish-npm:
+    name: Publish to npm
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created == 'true' }}
+    runs-on: ubuntu-latest
+    environment: release
+    permissions:
+      contents: read
+      id-token: write
+    steps:
+      - name: Checkout release tag
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
+        with:
+          ref: ${{ needs.release-please.outputs.tag_name }}
+          fetch-depth: 0
+
+      - name: Set up Node.js
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020
+        with:
+          node-version: 20
+          registry-url: https://registry.npmjs.org
+
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6
+        with:
+          bun-version: 1.3.11
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Run unit tests
+        run: bun test --max-concurrency=1
+
+      - name: Smoke test
+        run: bun run smoke
+
+      - name: Build
+        run: bun run build
+
+      - name: Dry-run package
+        run: npm pack --dry-run
+
+      - name: Publish to npm
+        run: npm publish --access public --provenance
+
+      - name: Release summary
+        run: |
+          {
+            echo "## Released ${{ needs.release-please.outputs.tag_name }}"
+            echo
+            echo "- npm: https://www.npmjs.com/package/@gitlawb/openclaude"
+            echo "- GitHub: https://github.com/Gitlawb/openclaude/releases/tag/${{ needs.release-please.outputs.tag_name }}"
+          } >> "$GITHUB_STEP_SUMMARY"