on:
  push:
    branches:
      - "main"
      - "release-branch/*"
  pull_request:
    # all PRs on all branches
  merge_group:
    branches:
      - "main"

jobs:
  license_headers:
    runs-on: ubuntu-latest
    steps:
      - name: checkout
        uses: actions/checkout@v4
      - name: check license headers
        run: ./scripts/check_license_headers.sh .