~x-ai/grok-latest → B (1:3)

B fixes a real Tokio RwLock deadlock by scoping reduced-state read guards in RoomCreate/RoomGrant so locks drop before nested awaits, and backs it with a room-create integration test plus test harness fixes (log-file pipes, HTTP timeouts). A mainly refactors entity morph targets from fixed #entity-section IDs to data-entity-section selectors and reuses entity_section in the vote UI—valuable DRY/cleanup, but not a correctness fix of B’s weight.