What problem does it solve? When a review or verification gate catches a bug after implementation, you need a disciplined way to fix exactly that defect without scope creep, accidental commits, or clobbering uncommitted work in the tree. ## Core Features & Use Cases - Bounded defect repair: Fixes one defect per invocation against established intent, escalating to needs-confirmation when the root cause demands new design work instead. - Worktree protection: Snapshots git status before editing, never overwrites pre-existing changes, never commits, and verifies only expected files moved. - Regression coverage and reporting: Adds or reuses a failing test, verifies proportionally, and appends a structured Fix entry to the existing Implementation Report. - Use Case: A reviewer flags REVIEW-003 — a null check missing in a parser. Invoke the skill with the finding; it locates the root cause, applies the smallest correct patch, adds a regression test, and returns a concise summary without committing. ## Quick Start Ask the agent to fix the failing login redirect bug found in review finding REVIEW-003 without committing any changes.