- WORKER_CONCURRENCY / WORKER_AGENT_CONCURRENCY; --role worker (io), worker:agent, all (both) - HTTP invoke of release.search/inspect, identity.resolve, catalog.lookup(remote): 15s timeout + per-upstream semaphore (site 2, TMDB 4) - worker event-loop lag probe: warn + count when drift > 5s Co-Authored-By: Claude Opus 5.5 <[email protected]>