08 Scale Risk Layer Audit

Verdict SCALE_RISK_MISCLASSIFIED. Risk is visible and readiness fail-closed: 74/74 full rescan, 74/74 no keyset, scale_not_safe=true. But missing_index_risk=false for all without index audit; three active tiers NOT_ASSESSED; collections labeled LOW by row count despite universal unsafe algorithm; scale_not_safe is literal sentinel rather than automatic completion gate. No scale green today, but registry is not reliable automation.