implement-with-test-plugin

Implement code with tests from a spec file or direct request. Auto-detects test framework (jest, vitest, pytest, go test, cargo test) and follows existing project patterns. Use when user asks to implement a spec, build a feature with tests, code from a spec, or says "implement", "구현", "구현해줘", "테스트와 함께 구현", "스펙 구현", "implement this spec". Proactively trigger whenever the user wants to turn a specification or requirement into working code with tests.