概要
This skill transforms Claude into a disciplined TDD practitioner, strictly adhering to the 'test-first' methodology for all features and bug fixes. It enforces the 'Iron Law' of no production code without a failing test, guiding the AI through the cycle of writing failing tests, implementing minimal passing code, and refactoring while maintaining green status. By requiring failure verification before implementation, it prevents common pitfalls like post-hoc testing or over-engineering, resulting in more resilient, well-documented, and maintainable software architecture.