Why: Validate W6 against account-audit migration v31 on the current authoritative base. Evidence: Focused store/runmgr/migrator and full Go tests passed in the isolated probe after resolving migration collisions. Impact: Renumbers unpublished W6 migrations to v32-v36; this probe commit is not a shipping branch or live migration. Refs: feature/rdm-two-trees-latest-templates W6 integration probe