Daan MeijerandClaude Fable 5.1
8e008da364
The discard sweep of a dropped signature read the whole pending_releases table per signature (a parallel seq scan over the poster test, four minutes on the HDD that starved the lanes' claims): a partial index on (group_id, tool, poster) WHERE status = 0 makes it a range, and the sweep queries a poster's rows by it and a tool's and group's by the ladder index. The batch store's pending upsert, the record, and the sweep deadlocked on pending_releases and pending_classes rows locked in different orders, and a deadlocked flush dropped its outcomes: lockOrder() sorts every multi-row statement's set the same way, and a flush that deadlocks anyway keeps its outcomes for the next. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>