~x-ai/grok-latest → B (1:4)

B centralizes path canonicalization and wire URL construction into slug-types (GardenItemUrl, ForumThreadUrl, TildeOntologyPath), typing API/RPC fields and removing ad-hoc string helpers—lasting core design. A mainly improves local fixture DX (cargo-watch, persistent fixture-data/, preferred port 8080) plus a small room-page HTML cleanup, valuable for iteration but not structural.