~anthropic/claude-sonnet-latest → B (6:4)

Side B fixes a genuine reentrant RwLock deadlock in RoomCreate/RoomGrant RPC handlers (dropping guards before nested read().await calls), which is a real correctness bug that could hang the server in production, plus hardens test infra (HTTP timeouts, log-file redirection to avoid pipe deadlocks) and corrects wrong test assertions. Side A is a solid, well-tested feature addition (garden ranking copy button) but is pure new surface area without fixing any existing defect, making B's contribution more consequential despite its terse commit message.