Development record

The session-end hook's retry of a transient repository-root failure has a 1.2-second budget, so on a loaded machine the first detection uses it all and the hook never retries: on 2026-10-25 TestHookSessionEndRetriesATransientRootFailure failed this way at a load near 20, and the same budget applies to real session ends, where the transcript store step is then skipped.