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.agent/skills/superpowers-tdd/SKILL.md

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+---
+name: superpowers-tdd
+description: Applies tests-first discipline (red/green/refactor) and adds regression tests for bugs. Use when implementing features, fixing bugs, or refactoring.
+---
+
+# TDD Skill
+
+## When to use this skill
+- new features that can be unit tested
+- bug fixes (always add a regression test if practical)
+- refactors (protect behavior with tests first)
+
+## Rules
+- Prefer **red -> green -> refactor**.
+- If tests are hard, still add **verification**: minimal repro script, integration test, or clear manual steps.
+- Keep tests focused: one behavior per test where possible.
+- Name tests by behavior, not implementation details.
+
+## Process
+1. Define the behavior change (what should be true after).
+2. Write/adjust a test to capture it (make it fail first if possible).
+3. Implement the minimal change to pass.
+4. Refactor if needed (keep passing).
+5. Run the relevant test suite + any linters.
+
+## Output requirements
+When you change code, include:
+- what tests you added/changed
+- how to run them
+- what they prove