chore(git): block AI/bot authors and co-author trailers #1
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| # Guard: no AI/bot git identities on mainline | |
| # | |
| # Blocks commits whose author, committer, or Co-authored-by / Signed-off-by | |
| # trailers match scripts/git-identity-blocklist.txt (Cursor, Claude, Copilot, | |
| # Dependabot-as-author, etc.). | |
| # | |
| # Local companion: ./scripts/install-git-hooks.sh | |
| name: git-identity | |
| on: | |
| push: | |
| branches: [main, master] | |
| pull_request: | |
| branches: [main, master] | |
| permissions: | |
| contents: read | |
| jobs: | |
| check: | |
| name: forbid bot authors / trailers | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 0 | |
| - name: Make checker executable | |
| run: chmod +x scripts/check-git-identity.sh | |
| - name: Determine range | |
| id: range | |
| run: | | |
| set -euo pipefail | |
| if [ "${{ github.event_name }}" = "pull_request" ]; then | |
| base="${{ github.event.pull_request.base.sha }}" | |
| head="${{ github.event.pull_request.head.sha }}" | |
| echo "range=${base}..${head}" >> "$GITHUB_OUTPUT" | |
| else | |
| # push to main: check commits introduced by this push | |
| before="${{ github.event.before }}" | |
| after="${{ github.event.after }}" | |
| if [ -z "$before" ] || [ "$before" = "0000000000000000000000000000000000000000" ]; then | |
| # new branch / first push — check last 50 commits as a bound | |
| echo "range=${after}~50..${after}" >> "$GITHUB_OUTPUT" | |
| else | |
| echo "range=${before}..${after}" >> "$GITHUB_OUTPUT" | |
| fi | |
| fi | |
| - name: Scan commits | |
| run: | | |
| set -euo pipefail | |
| range="${{ steps.range.outputs.range }}" | |
| echo "Scanning $range" | |
| # If range is invalid (shallow/orphan), fall back to HEAD only. | |
| if ! git rev-list "$range" >/dev/null 2>&1; then | |
| echo "Range unresolvable; checking HEAD only" | |
| scripts/check-git-identity.sh --commit HEAD | |
| else | |
| scripts/check-git-identity.sh --range "$range" | |
| fi |