-- Index the retention reaper's scan. reap_terminal deletes
--   WHERE state IN ('done','dead') AND updated_at < now() - interval
-- which had no supporting index, so each daily sweep sequential-scanned the whole
-- crawler_jobs table to find expired terminal rows (audit M5). A partial index on
-- updated_at over just the terminal states makes the batched reaper's per-batch
-- SELECT index-backed.
CREATE INDEX crawler_jobs_terminal_reap_idx
    ON crawler_jobs (updated_at)
    WHERE state IN ('done', 'dead');