~anthropic/claude-sonnet-latest → B (35:65)

Side B fixes a real reentrant-RwLock deadlock in RoomCreate/RoomGrant RPC handling, corrects a username normalization bug in tests (@user vs stored form), and adds HTTP timeouts to prevent test hangs plus a new integration test—concrete bugfixes with lasting operational impact despite the terse commit message. Side A merely adds one additional test for already-existing ranking logic, which is useful but far narrower in scope and risk mitigated.