Adds a workflow that pings the repo owner on each daily Claude PR and
acts on their reply: "approve" merges it, "reject: <reason>" closes it
with the reason recorded and a "rejected" label.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FpiqUMAyo4RL5DdQHMWbwE
Pings backend every 10 minutes so Render free tier never sleeps.
Reads BACKEND_URL from GitHub Actions secret.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>