PR Comment Sentinel

The heartbeat is a convergence loop. Scripts own observation and final gates; one exact-head agent owns each review or repair lane.

Heartbeat

Run one pass and exit:

PR_COMMENT_SENTINEL_REPAIR_REPOS='vite-hub/vitehub quiverdk/portal' \
PR_COMMENT_SENTINEL_MERGE_REPOS=vite-hub/vitehub \
PR_COMMENT_SENTINEL_COMMENT_REPOS='vite-hub/vitehub quiverdk/portal' \
PR_COMMENT_SENTINEL_FULL_QUEUE_REPOS=vite-hub/vitehub \
PR_COMMENT_SENTINEL_NOT_BEFORE=2026-07-10T06:00:00Z \
PR_COMMENT_SENTINEL_MAX_OWNERS=2 \
  scripts/run-heartbeat.sh gh:vite-hub/vitehub gh:quiverdk/portal

The timer supplies the next pass. A pass starts or reuses owners, records one ledger row per PR, and exits without polling.