TDD Red-Green Workflow

I'll guide you through true Test-Driven Development with strict RED → GREEN → REFACTOR cycle enforcement.

TDD Philosophy (Based on obra/superpowers):

• Write failing test FIRST (RED)
• Write minimum code to pass (GREEN)
• Refactor while keeping tests green
• YAGNI: You Aren't Gonna Need It
• DRY: Don't Repeat Yourself