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The sync_crdt_stages_from_db migration reads pipeline_items (which has stale 5_done stages) and overwrites the CRDT back to 5_done for stories that were already swept to 6_archived. On every restart, done stories reappear and get re-swept. The migration served its purpose — CRDT stages are now correct. Remove it. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>