What problem does it solve? History files tracking decisions and outcomes are read cold by future agents, so stale or premature entries poison downstream decision-making. This Skill prevents recording intermediate requests or reversed decisions as if they were final truth. ## Core Features & Use Cases - Final-outcome recording: Write only confirmed results to history.md, never intermediate or "for now" states. - Reversal handling: Update entries immediately when a decision is reversed so no stale data remains. - Single-source-of-truth discipline: Ensure one read gives one truth, with no cross-referencing required by future readers. - Use Case: A migration target is discussed as v0.6.0 but later corrected to v0.8.17; the history entry records "Migration target: v0.8.17 (initially discussed as v0.6.0, corrected by Brady)" so future agents act on the real decision. ## Quick Start Apply the history-hygiene skill to review my history.md entries and rewrite any that record unconfirmed requests or reversed decisions.