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ремонт: F1 chain rebuild для 152-ФЗ целостности Closes deferred item from docs/incidents/2026-05-29-disk-full-pg-recovery.md §4.1. Sequential hash recomputation в plpgsql DO-блоке через sudo -u postgres psql. Identical алгоритм с trigger audit_chain_hash() (post-F1 advisory-lock). Inputs: partition (whitelist), from_id, dry_run/confirm_apply. Safety: partition whitelist, ON_ERROR_STOP, COMMIT only after full loop.