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Arnaud GourlayandClaude Opus 5
b9ec8a4980
The decline postmortem answered its question and disproved two working theories: the failing replay's decline is the only application of the op (the "successful replay CoW" was the live application one second before the restart), and the full-window run's lost points cannot be shard-attributed because the reload postmortem prints every id under both shards. What remains is the custody chain: each hop consumes a pre-image, and whether that pre-image was durable at the moment of the hop is exactly what the ledger does not yet say. Add the source segment's version, persisted version, and the point's pre-move version to each cow line. A lost id's ledger then reads as a custody chain with numbers, and the hop whose pre-image was never durable, or whose durable holder later vanished, identifies itself. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>