quality-detect-regressions

Compare current quality metrics against a stored baseline to detect regressions in tests, coverage, type errors, linting, and dead code. Enforces quality standards by blocking task completion when metrics degrade beyond tolerance thresholds.

| Metric | Rule | Tolerance | Regression If |

| Tests passed | Must be >= baseline | None | current < baseline | | Coverage | Must be >= baseline - 1% | 1% | current < baseline - 1% | | Type errors | Must be baseline | | Linting | Must be baseline | | Dead code | Must be baseline + 2% |

將目前品質指標（測試、覆蓋率、類型錯誤、linting、死代碼）與基準進行比較並偵測迴歸。在任務完成後、標記任務完成之前或合併/提交之前主動呼叫。阻止回歸以防止品質下降。在完成任務、驗證變更或對照基線檢查品質回歸時使用。 來源：dawiddutoit/custom-claude。