X_COVERAGE_BELOW
Means
a package's own src/ is under the coverage floor
Typical cause
the floor is 95% lines and functions, or that package's lower entry in scripts/lib/coverage-pins.ts — a pinned package may not fall further. Scoped to the package's own files on purpose: bun test packages/<pkg> loads everything it imports and Bun's summary averages over all of it, which read @ultimat3/cache at 35% while its own sources were at 98.8%
Fix
cover the gap with tests beside the source, then bun run scripts/coverage-gate.ts --package <pkg> --json. For a pinned package the finding says what the pin recorded, and restoring that is the edit