Add push-sentinel GitHub Action workflow

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Pmaind

.github/workflows/push-sentinel.yml

@@ -0,0 +1,20 @@
+name: push-sentinel
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: Pmaind/push-sentinel-action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}