/checkpoint What A quick mid-session save that banks the known-good state in two moves: 1. Descriptive git commit — stage relevant changes and commit with a message that summarizes the work. 2. Brief handoff note — write so a resumed session (or you, after a botched refactor) knows exactly where things stand. Checkpoint is the mid-session save; is the end-of-session ritual. Checkpoint commits and jots a note, then keeps working. Wrap-up does the full handoff plus learning extraction into . When - Before a risky refactor or destructive change — checkpoint the known-good state - When switching…