Owner Errors

OWNER plane — structured ENGINE ERROR CODES (recent failure/degraded/empty/fallback rows + counts by code, last hours). The engine emits these at the real failure sites (model fell back to stub / ran out of memory / never loaded, forecast neutral prior, research returned 0 fetched, a grounding pass where every leaf came back blocked) AND at the door refusals (no key, unknown key, out of free calls, owner-only path) so silent degrades SCREAM here instead of hiding behind an HTTP 200. LAZY + EMPTY-SAFE: no log → zeros + a note, never a 500. Admin-gated via the /owner/ prefix in metering.AUTH_PATHS.