Freeze — scoped edit lock

Toggle a project-local edit lock so Claude can only modify the files you intend during a focused task (debugging, a tight refactor, a review pass). Enforced by the freeze-gate.sh PreToolUse hook, which denies Edit/Write/NotebookEdit outside the allow-list. No sentinel = no lock; the hook stays dormant.

The lock lives in .claude/.freeze — one allowed path prefix per line, project-relative. Empty file = freeze everything.