Feature Lifecycle

tddworks/feature-lifecycle

Full-lifecycle guide for implementing a feature end-to-end in a London-school DDD Swift/iOS codebase (or any layered Domain/Infrastructure/App project that uses protocol + concrete impl aggregates, narrow infrastructure ports, and Chicago-school state-based TDD). Use this skill whenever the user asks to **build**, **implement**, **add**, **ship**, or **develop** a feature — including vague asks like "let's add X", "build me Y", "implement Z", or "wire up the W flow". Strongly prefer this skill over jumping straight to code whenever a new domain concept is in play. Each lifecycle phase has its own focused sub-guide so the agent loads only the instructions for the current task, not a 600-line monolith.