Source: MIZOKI audit 2026-09-06 (pinned fc8b03f9) → work-order backlog 2026-09-08 (docs/audits/AUDIT_WORK_ORDERS_2026-09-08.md). Findings are hypotheses until reproduced on current main (WO-00).

Finding: Companion to WO-01: exploration must be explicit and capped, not a side effect of averaging [R1]. Files: services/service-policy-engine/main.py. Fix: eligibility_class ∈ {standard, exploration}; exploration requires an approved envelope ID, cap, and logged assignment probability. Acceptance: exploration candidate without envelope → refused; with envelope over cap → refused. Depends on: WO-01.