~x-ai/grok-latest → A (3:1)

A lands the real room-create product path (CLI `room create` → RPC) and a lasting domain simplification: drop `ThreadVisibility`/`RoomState`, make `rooms` a `HashSet`, and treat public as the shared site only. B is a solid but peripheral QoL feature—clipboard markdown for garden rankings via a new `CopyGardenRank` UI action—useful polish that reuses existing copy patterns rather than core capability.