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: MMM export consumes the caused-value sum as a calibration point estimate [R11]. Files: services/service-media-incrementality/main.py; services/service-validation-orchestrator/main.py (meridian export). Fix: export experiment-level effect + interval from WO-10; refuse export when the estimand is a convention. Acceptance: export test: convention-labeled input → export refused; experiment input → prior with SD populated. Depends on: WO-10.