Validates test quality beyond coverage: uses Claude subagents to generate intelligent mutations for source code, runs them via the project's native test runner (pytest, jest, vitest, mocha, go test), prints a structured summary, generates mutation-todos.md with per-mutant rationale, persists every run to a per-project SQLite ledger and JSONL trace under ./.logbooks/mutation-testing/, and warns whe
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Mutation Testing
Tests pass ≠ tests are useful. This skill uses Claude to generate meaningful mutations for source code, then runs the project's existing test suite against each one. A surviving mutant is a gap — a real bug the suite would miss.
What this skill does
Discovers source files — the calling agent reads the project structure and selects files
Detects test runner — the calling agent inspects project config and builds the test command
Checks baseline — verif
[Description truncada. Veja o README completo no GitHub.]
