The par2 prune gets 2 min per round (it held the merges back for hours); abandoned ranges past their end are finished

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/services/par2_merger.ts

@@ -23,6 +23,8 @@ const OVERLAP_MS = 60_000
 const FOLD_EVERY_MS = 5 * 60_000
 /** Between par2_files prunes (complete and judged sets' file lists). */
 const PRUNE_EVERY_MS = 60 * 60_000
+/** A prune's share of the merger's time: the rest goes on in the next one. */
+const PRUNE_BUDGET_MS = 2 * 60_000
 /** The merger's row in worker_cursors: the start of its last whole round, kept over a restart. */
 const CURSOR = 'merger'
 
@@ -95,7 +97,7 @@ export class Par2Merger {
         // First, at start too: a prune needn't wait for a long round.
         if (!this.stopped && Date.now() - prunedAt >= PRUNE_EVERY_MS) {
           prunedAt = Date.now()
-          const pruned = await new Par2Pruner().round()
+          const pruned = await new Par2Pruner().round(PRUNE_BUDGET_MS)
           if (pruned.rows) logger.info(`Pruned ${pruned.rows} par2 file rows: ${pruned.complete} complete sets, ${pruned.judged} judged.`)
         }
         const round = await this.round()