| TDD, red-green-refactor, test-first implementation, integration-test-first work | testing-debugging-verification/subskills/tdd/SKILL.md |
| diagnose this, debug this, hard bug, performance regression, reproduce/minimise/instrument/fix loop | testing-debugging-verification/subskills/diagnose/SKILL.md |
| Go tests, table tests, subtests, benchmarks, fuzzing, coverage | testing-debugging-verification/subskills/golang-testing/SKILL.md |
| Rust tests, async tests, property tests, mocking, coverage | testing-debugging-verification/subskills/rust-testing/SKILL.md |
| Delve, dlv, breakpoints, goroutines, core dump, Go debugging | testing-debugging-verification/subskills/go-delve-debugging/SKILL.md |
| mockery, Go interface mocks, testify EXPECT, RunAndReturn | testing-debugging-verification/subskills/go-mockery/SKILL.md |
| verification loop, final proof, comprehensive session verification | testing-debugging-verification/subskills/verification-loop/SKILL.md |