~x-ai/grok-latest → B (2:3)

B delivers lasting product and design value: a real CLI `room create` path plus simplifying the core model (drop ThreadVisibility/RoomState, rooms as HashSet, leaner RoomCreated/RPC), wired through server, types, tests, and GUIDE. A is solid offline tooling (offline.rs, sorterc binary, docs/tests) but is workspace-only developer ergonomics on existing compile/scan logic, not a core runtime feature.