What problem does it solve? Turning a spec or ticket into shipped code often fails in predictable ways: tests retrofitted to match code already written, features committed because they "work" but ship inaccessible controls, and ad-hoc debugging that derails the build. This Skill sequences the implementation loop — agreeing test seams up front, building in vertical red-green slices, and enforcing a review gate before commit — so shipped Next/React/TypeScript features meet their acceptance criteria. ## Core Features & Use Cases - Seam-first planning: Names the public test seams (exported functions, hook returns, route handlers) and confirms them before any code is written, preventing tautological retrofitted tests. - Vertical-slice build loop: Drives one failing behavior test per slice via test-shipped-code, with typecheck and test cadence after each slice and a full suite run at the end. - Pre-commit review gate: Runs review-shipped-code as an AND-gate on the diff, blocking commit if either the Standards or Spec axis fails, then commits to the feature branch under git guardrails. - Use Case: Given a workpack ticket to add a "Book again" action to a salon booking confirmation screen, agree the buildRebookPayload seam, write the failing test first, implement to green, catch an inaccessible motion.div button at the review gate, fix it, and commit. ## Quick Start Implement the next ready ticket from my workpack spec as committed code, agreeing the test seams first and running the review gate before committing.
