Process PRs (one tick)

One pass over the repo's open PRs per invocation, then stop. Compose with /loop for recurrence (/loop /process-prs, /loop 1h /process-prs); /loop owns pacing and is the new-PR discovery mechanism. Never schedule yourself.

State derives entirely from GitHub (labels, draft flag, commit/comment timestamps), so a tick is idempotent and resumable: an empty queue costs one gh pr list and exits.

Rails