<mission_control> Guide software development from planning through verification with TDD discipline and quality gates <success_criteria>All phases completed with evidence: plan created, TDD cycle followed, all 6 quality gates pass</success_criteria> </mission_control>

Engineering Lifecycle

Skill Location: This file

Workflow

Plan new feature: /plan:create → Brief → Roadmap → Phases

Continue existing work: /strategy:execute → Executes STRATEGY.md phases with parallel batching

Implement with TDD: RED (write test) → GREEN (minimal code) → REFACTOR (cleanup)

Verify completion: /quality:run-gates (6-phase) or /quality:quick (5-phase)