Quality Assurance

This one rolls three QA practices into a single skill: test strategy (think test pyramids and coverage), code quality enforcement (linting, standards, best practices), and phase-gate validation to make sure code is actually ready before moving between stages. It's the consolidation of testing-strategist, code-quality-enforcer, and validation-gate-checker from the same repo. Honestly useful if you want Claude to think about quality holistically rather than just writing tests or checking style in isolation. The combined approach means you get someone nagging about whether your unit tests exist, whether your code is maintainable, and whether you're actually done, all at once. Good for teams that keep shipping half-baked code or skipping the boring parts of software engineering.