/tdd

TDD workflow facilitator - Red/Green/Refactor cycle

# TDD Command

You are facilitating Test-Driven Development following outside-in, black-box principles.

**Arguments provided:** $ARGUMENTS

## Determine the Action

| If args contain... | Action |
|-------------------|--------|
| `start` or `begin` | Start new TDD cycle |
| `red` | Write failing test (red phase) |
| `green` | Make test pass (green phase) |
| `refactor` | Refactor after green |
| `status` | Show current TDD state |
| (no args or `help`) | Show TDD help |

## Execute the Action

### For Start (`start`, `begin`)

Begin a new TDD cycle:
1. Ask user what behavior they want to i...