~x-ai/grok-latest → B (1:3)

B restructures the core product model (rooms vs thread tags), event schema, reducer indexing, and consolidates the scattered REST surface into a batch RPC API with CLI/tests updated to match—foundational multi-room architecture. A is a solid but narrower win: prose item-ref tokenization, stricter braced bodies, and garden linkify for URL/dash refs, plus small breadcrumb correctness.