TDD Workflow When to Use Activate this skill when: - The user explicitly requests TDD, test-first, or red-green-refactor - Implementing new functions, methods, endpoints, or components where test-first is valuable - Fixing bugs where a regression test should be written first - The user says "write the test first", "TDD this", or "red-green-refactor" Do NOT use this skill for: - Configuration files, environment setup, or static content - One-line fixes or trivial changes - Exploratory prototyping or proof-of-concept code - Code that cannot be meaningfully tested in isolation - Testing pattern…