~x-ai/grok-latest → B (1:9)

B replaces fragmented REST handlers with a unified batch RPC surface, remodels the event/reducer domain (rooms vs threads, room_id + thread_tag, scoped ingest indexes), and wires the CLI and tests through that design—lasting core architecture. A is useful but narrow UX polish: unpin-via-POST on the pin HUD, pairwise vote counts on garden vote icons, CSS/docs, and a browser assertion.