Phase Implement

Phase Implement

Use this skill when the user asks for /phase-implement, implementation from a plan, TDD execution, or the coding stage of an automated software delivery flow.

Purpose

Implement the approved plan with tests and tight feedback loops.

Workflow

1. Load the latest relevant plan or ask for the target plan if none is obvious.
2. Split work into independently verifiable steps.
3. For each step:
   • write or update a failing test when practical
   • implement the smallest change
   • run the nearest verification
   • refactor only after behavior is protected
4. Use the project’s existing style, helpers, and architecture.
5. Use language-specific skills or reviewers when the project stack is clear.
6. If build or tests fail:
   • diagnose the first meaningful failure
   • fix incrementally
   • retry up to 3 times per distinct failure mode
7. Mark blocked work explicitly instead of hiding failures.

Output

Include:

• implemented steps
• changed files
• tests or checks run
• failures fixed
• any blocked or deferred items

End with PHASE_IMPLEMENT_DONE when implementation is complete, or PHASE_IMPLEMENT_BLOCKED when it cannot safely continue.