What problem does it solve? Managing multi-phase feature implementation manually leads to skipped tests, lost progress state, and inconsistent commits. This Skill automates the execution of a track's implementation plan with structured TDD cycles, progress tracking, and mandatory verification gates. ## Core Features & Use Cases - TDD Task Execution: Runs Red-Green-Refactor cycles per task, writing failing tests first, implementing minimal code, then refactoring while keeping tests green. - Progress State Management: Tracks task and phase completion in plan.md and metadata.json, enabling pause and resume of long implementations. - Phase Verification Gates: Halts after each phase to run the full test suite and waits for explicit user approval before continuing. - Use Case: A developer has a Conductor track for a user authentication feature with 3 phases and 12 tasks. This Skill executes each task in order, commits after every completion, and pauses at phase boundaries for review. ## Quick Start Run the implement command with a track ID, such as asking to implement the track auth_20250115 following the TDD workflow.