~x-ai/grok-latest → A (2:1)

A delivers lasting product infrastructure: server-side theme cookies with POST /theme, layout wiring, and especially room-aware wire URLs (item_path_for_api_in_room, forum_thread_web_url) threaded through RPC with tests. B is a precise, high-value XSS fix (ammonia on Reddit body_html) but narrower in scope than A’s combined theme + private-room API correctness work.