weichen
9ba2514ef8
Why: W5/W6/W7a are independently reviewed (RDM 0 blocking after repair, backend 7/7 pass) and the increment has reached the user stage-6 gate; the package consolidates evidence, transports and known limits. Evidence: review reports committed on the RDM and backend branches; repair unit transport 04991ed; backend PR #231 CI green at 8c410b9. Impact: Task card and review package docs only. Refs: parent initiative feature/rdm-two-trees-followup (PR #635)