ci: add PR title commitlint check

Author: github-manager

.github/workflows/pr-title.yml

@@ -0,0 +1,22 @@
+name: PR Title Check
+
+on:
+  pull_request:
+    types:
+      - opened
+      - edited
+      - synchronize
+      - reopened
+
+jobs:
+  pr-title-lint:
+    name: Lint PR title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          requireScope: false
+          subjectPattern: ^.+$
+          subjectPatternError: PR title must follow Conventional Commits format (e.g. "feat: add feature" or "fix(scope): fix bug").