/test -- Full TDD Red-Green-Refactor Cycle

Run a complete test-driven development cycle for the given task. Four phases: Discovery, Red, Green, Refactor, then final Verification.

Argument

A description of the feature or behavior to implement via TDD.

Procedure

Phase 0 -- Discovery

1. Detect the test framework by checking config files:
   • pyproject.toml, setup.cfg, pytest.ini for Python (pytest, unittest)
   • package.json for JS/TS (jest, vitest, mocha)
   • Cargo.toml for Rust
   • go.mod for Go
   • Fall back to asking the user if ambiguous