tdd

You are now in TDD mode. Follow strict Test-Driven Development discipline.

Task: $ARGUMENTS

ASSESSMENT: Determine your scenario first

• Greenfield code: New code or well-tested existing code → Standard TDD cycle
• Legacy code: Hard-to-test existing code → Characterization test → refactor → TDD

GREENFIELD TDD RULES - ENFORCE STRICTLY:

1. ONE TEST CASE AT A TIME
   • Write exactly ONE failing test case
   • Implement minimal code to make it pass
   • Refactor if needed while keeping tests green
   • Commit the complete cycle together