Per repo-owner preference, drop the explicit types list and use the
default pull_request event set, keeping only the base-branch filter
(branches: [main]).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The workflow only fired on push to main, so a PR opened during a quiet
period (no subsequent merge to main) sat behind main until manually
updated. Add an opened/reopened/ready_for_review pull_request trigger;
synchronize is intentionally excluded to avoid re-running on every push,
including the autoupdate action's own branch updates.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>