What problem does it solve? Bug fixes often ship without tests that would catch the original bug, and test coverage silently drifts as new game features are added. This Skill audits existing tests against GDD critical paths and closed bugs, then maintains a curated regression suite manifest so releases are protected against known failure points. ## Core Features & Use Cases - Critical Path Coverage Audit: Maps every GDD acceptance criterion to existing unit and integration tests, classifying each as COVERED, PARTIAL, MISSING, or EXEMPT. - Bug Regression Detection: Scans closed bug reports and flags any fix lacking a test that would catch recurrence, suggesting the exact test file path to create. - Coverage Drift Detection: Identifies new systems, completed stories, or revised GDD sections that have no corresponding test coverage. - Use Case: Before a release gate, run an audit to produce tests/regression-suite.md listing all registered regression tests, known gaps, and quarantined flaky tests, with HIGH priority flags on formula and state-machine paths. ## Quick Start Ask the AI to run the regression suite audit to map GDD critical paths against existing tests and update tests/regression-suite.md with any missing regression coverage.