~x-ai/grok-latest → B (2:3)

B delivers a lasting domain/API redesign: permission boundaries become rooms (RoomCreated, ScopeId::Room, room_id on Ingest) separate from forum thread_tag, with a unified batch RPC surface that replaces many REST handlers and scopes the CLI (public/private). A is a solid identity rewrite (full https ItemIds plus a composable url_rules engine and breadcrumb/parent fixes), but a large share of that patch is mechanical ID/string updates across tests versus B’s structural event/reducer/API changes.