fix: handle null head_commit and add error handling to release workflow

.github/workflows/release.yml

@@ -12,48 +12,79 @@ permissions:
 jobs:
   release:
     runs-on: ubuntu-latest
-    # Skip if this is a version bump commit
-    if: |
-      !contains(github.event.head_commit.message, 'chore: bump version') &&
-      !contains(github.event.head_commit.message, '[skip release]')
     steps:
+      - name: Check if should skip
+        id: check
+        run: |
+          if [ -z "${{ github.event.head_commit.message }}" ]; then
+            echo "should_skip=true" >> $GITHUB_OUTPUT
+            echo "Skipping: head_commit.message is empty"
+            exit 0
+          fi
+
+          if [[ "${{ github.event.head_commit.message }}" == *"chore: bump version"* ]] || \
+             [[ "${{ github.event.head_commit.message }}" == *"[skip release]"* ]]; then
+            echo "should_skip=true" >> $GITHUB_OUTPUT
+            echo "Skipping: version bump or skip release commit"
+          else
+            echo "should_skip=false" >> $GITHUB_OUTPUT
+          fi
+
+      - uses: actions/checkout@v4
+        if: steps.check.outputs.should_skip != 'true'
+        with:
+          fetch-depth: 0
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - uses: actions/setup-node@v4
+        if: steps.check.outputs.should_skip != 'true'
         with:
           node-version: '24'
           cache: 'npm'
           registry-url: 'https://registry.npmjs.org'
 
       - name: Install dependencies
+        if: steps.check.outputs.should_skip != 'true'
         run: npm ci
 
       - name: Get current version and bump
+        if: steps.check.outputs.should_skip != 'true'
         id: version
         run: |
           CURRENT_VERSION=$(node -p "require('./package.json').version")
           NEW_VERSION=$(node -e "
             const v = '$CURRENT_VERSION'.split('.');
-            v[2] = parseInt(v[2]) + 1;
+            v[2] = String(parseInt(v[2]) + 1);
             console.log(v.join('.'));
           ")
           echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
           echo "Current: $CURRENT_VERSION → New: $NEW_VERSION"
 
       - name: Update package.json version (in memory only)
+        if: steps.check.outputs.should_skip != 'true'
         run: |
           npm version ${{ steps.version.outputs.version }} --no-git-tag-version --no-commit-hooks
 
       - name: Create tag from current commit
+        if: steps.check.outputs.should_skip != 'true'
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
-          git tag -a "v${{ steps.version.outputs.version }}" -m "Release v${{ steps.version.outputs.version }}"
-          git push origin "v${{ steps.version.outputs.version }}"
+          TAG_NAME="v${{ steps.version.outputs.version }}"
+
+          # Check if tag already exists
+          if git rev-parse "$TAG_NAME" >/dev/null 2>&1; then
+            echo "Tag $TAG_NAME already exists, skipping tag creation"
+            exit 0
+          fi
+
+          git tag -a "$TAG_NAME" -m "Release $TAG_NAME"
+          git push origin "$TAG_NAME"
 
       - name: Generate release notes
+        if: steps.check.outputs.should_skip != 'true'
         id: release-notes
         uses: actions/github-script@v7
         with:
@@ -77,6 +108,7 @@ jobs:
             core.setOutput('body', notes || 'See commit history for details.');
 
       - name: Create GitHub Release
+        if: steps.check.outputs.should_skip != 'true'
         uses: softprops/action-gh-release@v2
         with:
           tag_name: v${{ steps.version.outputs.version }}
@@ -91,4 +123,5 @@ jobs:
           prerelease: false
 
       - name: Publish to npm
+        if: steps.check.outputs.should_skip != 'true'
         run: npm publish