GitHub Actions — алерт когда scheduled-workflow не запустился

# .github/workflows/nightly-backup.yml
name: nightly-backup
on:
  schedule:
    - cron: '0 3 * * *'   # 03:00 UTC daily
  workflow_dispatch:

jobs:
  backup:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Run backup
        run: ./scripts/backup.sh

      - name: Heartbeat ping (only on success)
        if: success()
        run: curl -fsS "$ENTERNO_HEARTBEAT_URL"
        env:
          ENTERNO_HEARTBEAT_URL: ${{ secrets.ENTERNO_HEARTBEAT_URL }}