X_COVERAGE_FLOOR_UNSTATED
Means
x.verify.json states no coverage floor, or one under 95 with no reason
Typical cause
x.verify.json has no coverage: { lines, funcs }, so the gate has no floor to hold the unit suite to — an app is never held to a default it did not write. Also raised for a stated floor under 95 on either number that carries no why
Fix
x verify --only unit --json — the finding carries the measured numbers and the exact "coverage" line to add to x.verify.json