- P2: filter directly-changed test files to paths that still exist on disk
(existingChangedTestFilesInPackage) so deleted/renamed .test paths from
`git diff` never reach `vitest run` positionally; all-deletions diff falls
into the delegate-to-gate path.
- P1: make heavy-package delegation gate-coverage-aware
(GATE_COVERED_MEMORY_ENVELOPE_PACKAGES). Engine delegation keeps the accurate
"curated engine-core subset ran above" note; dashboard delegation now warns
that the gate runs no dashboard tests and names the CI full-suite backstop,
so the coverage gap is loud instead of a silent false-green.
- +4 regression tests (115/115).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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