Agent Skills: test-development

Create comprehensive test suites by discovering and adapting to any testing framework, following project test patterns and ensuring robust coverage. Use when writing tests, improving coverage, validating functionality. Triggers: 'test', 'coverage', 'unit test', 'integration test', 'E2E', 'spec', '테스트', '커버리지', '단위 테스트', '통합 테스트', '테스트 작성', working with *.test.*, *.spec.*, test/, __tests__/.