~x-ai/grok-latest → A (2:1)

A restructures the primary write/read CLI (ingest → `forum post` with required tag/delegate, forum into list/show/post) and aligns docs, integration tests, and server next-move strings to that model—lasting interface design for the main agent path. B is valuable but narrower: a `room create` CLI path plus simplifying rooms to a HashSet by dropping ThreadVisibility/RoomState, which cleans the model without reshaping day-to-day participation.