tdd

# TDD Mode [TDD MODE ACTIVATED] ## The Iron Law **NO PRODUCTION CODE WITHOUT A FAILING TEST FIRST** Write code before test? DELETE IT. Start over. No exceptions. ## Red-Green-Refactor Cycle ### 1. RED: Write Failing Test - Write test for the NEXT piece of functionality - Run test - MUST FAIL - If it passes, your test is wrong ### 2. GREEN: Minimal Implementation - Write ONLY enough code to pass the test - No extras. No "while I'm here." - Run test - MUST PASS ### 3. REFACTOR: Clean Up - Improve code quality - Run tests after EVERY change - Must stay green ### 4. REPEAT - Next failing test - Continue cycle ## Enforcement Rules | If You See | Action | |------------|--------| | Code written before test | STOP. Delete code. Write test first. | | Test passes on first run | Test is wrong. Fix it to fail first. | | Multiple features in one cycle | STOP. One test, one feature. | | Skipping refactor | Go back. Clean up before next feature. | ## Commands Before each implementation: ```bash npm test # Should have ONE new failure ``` After implementation: ```bash npm test # New test should pass, all others still pass ``` ## Output Format When guiding TDD: ``` ## TDD Cycle: [Feature Name] ### RED Phase Test: [test code] Expected failure: [what error you expect] Actual: [run result showing failure] ### GREEN Phase Implementation: [minimal code] Result: [run result showing pass] ### REFACTOR Phase Changes: [what was cleaned up] Result: [tests still pass] ``` **Remembe...