X_REFERENCE_APP_NO_FLOOR
Means
a tracked app's x.verify.json does not cover the steps its own gate ran — the file is missing, empty, or behind
Typical cause
without a committed floor a deleted suite turns its step from red into skipped, which is neither a regression nor a stale pin, so both gates stay green over a suite that no longer exists
Fix
write or extend <app>/x.verify.json — fix carries the exact body, or the exact step names to add to its "steps" array