~x-ai/grok-latest → A (3:2)

Side A ships a complete, correctly scoped feature (RoomList RPC + types + CLI + isolation tests that prove users only see granted rooms), which is lasting API surface. Side B restores substantial room UI (cookie sessions, /r/* pages, web post, ACL checks in forum.rs) but dilutes value with a 190-line speculative plan2.md and more diffuse wiring without equivalent new tests.