~x-ai/grok-latest → B (2:5)

B delivers an integrated, user-facing feature (CLI `room create` + RPC path) plus a lasting domain simplification (drop ThreadVisibility/RoomState, rooms as HashSet of private shortid/slug ids only, with matching test/doc updates). A adds a large standalone Reddit client module that is well-structured but unwired and orthogonal to the core room/forum model shown in the rest of the tree.