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https://github.com/diegosouzapw/OmniRoute.git
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39d1fc5c13
Root cause (NOT a timeout): the nightly-mutation run fails on cold-cache nights because the blocking mutation-ratchet job measures modules below baseline, while warm-cache nights pass — the verdict tracked GitHub Actions cache state, not code quality. Proven via a local Stryker probe on headers.ts: covering unit tests (no-memory-header, strip-reasoning) had drifted OUT of stryker.conf.json tap.testFiles, so their mutants went covered-but-unkilled = Survived on a cold full run (COVERED score 61.73 vs 94.29 baseline); adding them restores the kills. - Add scripts/check/check-mutation-test-coverage.mjs: guards that every UNIT test importing a Stryker-mutated module is listed in tap.testFiles. Advisory by default, --strict in CI (wired in quality.yml fast-gates). Prevents recurrence. - Add the 38 drifted covering unit tests to stryker.conf.json tap.testFiles (138 -> 176). Monotonically safe: more covering tests only raise/hold the score. - Add MUTATION_RATCHET_EPS (1.0pt) anti-flake tolerance to check-mutation-ratchet so sub-point tap-runner jitter no longer false-fails the gate. Lowers no baseline. - Tests: check-mutation-test-coverage (3) + eps cases in check-mutation-ratchet. Residual: a clean post-merge nightly confirms scores return to/above baseline; any marginal residual gets a baseline re-seed (operator).