planning-phase

Code reuse detection guides research for existing patterns, utilities, and components before implementation. This Skill automates the planning phase by analyzing specifications, identifying reusable assets, and documenting them in a comprehensive plan.md artifact to reduce development time and prevent duplicated code.

A solid architecture plan defines application layers, components, and dependencies, documenting major architectural decisions (ADRs). This Skill generates detailed architecture models from feature specifications, ensuring consistent development and providing a clear blueprint before coding begins.

API contract definition specifies request/response schemas, validation rules, and error handling for endpoints. This Skill produces detailed API contracts as part of the planning phase, ensuring alignment between frontend and backend before implementation.

Testing strategy planning outlines unit, integration, and end-to-end testing approaches with clear coverage targets before development starts. This Skill includes testing strategy as a core planning artifact, reducing rework and ensuring comprehensive coverage targets are defined upfront.

Yes, this Skill covers research depth assessment and technical design across the planning phase. It guides design pattern selection, research for reusable components, and produces research.md artifacts documenting findings and technology recommendations.

The planning phase produces plan.md, research.md, and an updated workflow-state.yaml. These artifacts document implementation strategy, code reuse opportunities, architectural decisions, API contracts, and testing approaches for handoff to development.