What problem does it solve? Turning a one-line feature idea from a build plan into a buildable, reviewable spec is error-prone: specs end up oversized, missing edge cases, or drifting in scope. This Skill automates that translation, producing small ordered build steps with observable done-criteria before any code is written. ## Core Features & Use Cases - Automatic target selection: With no argument, picks the first unchecked item in build-plan.md; accepts a feature number or name to spec a specific item. - Sizing and splitting: Detects features too big for one review and splits them into sub-features (4a, 4b, ...) recorded back in the build plan. - Spec generation with self-critique: Writes a full spec to blueprint/context/current-feature.md using a template, then red-teams its own draft for coverage gaps, oversized steps, ordering issues, and scope creep before presenting it. - New-feature intake: Proposes plan additions for genuinely new features, stops for approval before editing user-owned plans, and regenerates the project overview afterward. - Use Case: A developer runs /feature after finishing a feature; the Skill reads the build plan, specs the next unchecked item into small reviewable steps, critiques the draft, and stops at a review gate for approval. ## Quick Start Run /feature with no argument to spec the next unchecked item in build-plan.md, or run /feature followed by a feature number or name to spec that specific item.