_persist_respawn_record is fire-and-forget per gate mutation; a respawn loop
fires count 1->2->3->4 in quick succession, scheduling one persist per
increment for the same (agent_slug, task_id). The ON CONFLICT DO UPDATE upsert
is row-level race-free, but the fire-and-forget tasks can still COMMIT out of
order: a slow stale persist (count=2) scheduled first can resolve AFTER a fast
fresh one (count=4) scheduled second, leaving the durable row at the stale low
count and re-burning the strike threshold on restart.
Fix: acquire self._respawn_persist_lock (new asyncio.Lock) as the FIRST await
in _persist_respawn_record, so acquisition order = task creation order (FIFO
ready queue) = logical schedule order, and commits land in that order. The
durable row always ends at the latest logical value. The lock lives in the bg
task, so the dispatcher hot path never blocks; persists are best-effort and
a slow one queuing the rest just delays the durable catch-up (in-memory record
stays authoritative).
Renn F
1dcbb4ca3a