What problem does it solve? When feature specs and screen designs exist but coding starts immediately, implementation fills in data structures, API shapes, and flows with on-the-fly guesses. This Skill finalizes confirmed design values right before coding, bridging the gap between feature planning and implementation. ## Core Features & Use Cases - Four-part design set: Produces one document with four sections in dependency order — logic/workflow (hub), data model (entities, constraints, migrations), data access (queries/ORM with N+1 risk flags), and API contracts (endpoints, schemas, error codes). - Traceability keys: Attaches tracking keys (REQ/AC, SCR, LOGIC/TBL/API-NN) so requirements, screens, design, and implementation can be cross-verified via grep. - Independent verification gate: Drafts are cross-checked with a consistency-check pass and an approval gate before implementation begins; unconfirmed items stay marked as needing confirmation. - Use Case: Before building a new order-management feature, generate the confirmed design set so the coding agent implements against fixed table schemas and API contracts instead of guessing. ## Quick Start Ask the AI to create the development design for a feature, finalizing the logic flow, data model, data access patterns, and API contracts before any coding starts.
