What problem does it solve? Turning a written spec or set of tickets into working, verified code requires disciplined execution: writing tests first, running typechecks, and reviewing the result. This Skill structures that implementation workflow so the work is completed, tested, reviewed, and committed consistently. ## Core Features & Use Cases - Spec-driven implementation: Builds the work described by the user in a spec or set of tickets. - Test-driven development: Applies TDD at pre-agreed seams, runs typechecking and single test files regularly, and runs the full test suite once at the end. - Review and commit: Finishes by running a code review over the changes and committing the work to the current branch. - Use Case: You have a ticket describing a new API endpoint. Invoke this Skill to implement it with tests, verify types and the test suite, review the diff, and commit the finished work on your branch. ## Quick Start Implement the work described in this spec using TDD, then review and commit it.