implement-feature

To implement planned software features using TDD, this Skill validates your pre-defined plan document against architecture patterns, then executes the development steps by writing tests first, implementing minimal code to pass them, and enforcing human testing checkpoints.

To ensure feature implementation matches existing architecture patterns, this Skill validates your pre-defined plan document against those patterns before executing any development steps, ensuring structural consistency and adherence to project standards.

Yes, you need a pre-defined plan document in the `docs/` directory to start feature development. This Skill requires adherence to that existing plan to guide the Test-Driven Development execution and human testing checkpoints.

Test-driven development with human testing checkpoints works by first writing tests and implementing minimal code to pass them, then pausing execution at mandatory checkpoints for user verification, ensuring both automated and manual validation before updating documentation.

You can update documentation after implementing a feature through this Skill's post-implementation workflow, which facilitates documentation updates as a specific checkpoint following the successful execution and human verification of your test-driven development steps.