A pure London School TDD implementation that enforces mock-first, outside-in development with clear workflow hooks. You write the failing test with mocked dependencies, run it, implement just enough to pass, then refactor. It includes pre and post task hooks for tracking TDD cycles, which is useful if you're trying to maintain discipline around the red-green-refactor loop. The constraint to npm/npx tools means this is JavaScript/TypeScript focused. If you actually practice London School rather than the classical Detroit style, this codifies that approach. The one-assertion-per-test principle and descriptive naming format are opinionated but reasonable guardrails.
npx skills add https://github.com/ruvnet/ruflo --skill tdd-workflow