Implement software features from an idea, approved plan or specification, or app brief through plan-gated coding, validation, and optional PR/MR handoff. Use when the user asks to build a feature or application, implement or execute a plan, turn an idea into validated code, or work through iterative plan-implement-validate cycles. After implementation validation, use check-production-readiness before submit-change-request handles commit, push, PR/MR, or CI/CD operations. Not for creating requirements or PRDs; use create-interactive-prd. Not for delivering approved PRD stories from a tracked queue; use implement-prd-stories.
