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

Side B fixes a real deadlock bug (nested RwLock read guards held across await points causing self-deadlock in RoomCreate/RoomGrant), adds a regression test for room creation, and hardens test infra with HTTP timeouts and safer log redirection to avoid pipe-buffer deadlocks. Side A is a UI refactor (grouping cli_panel rows, hover-to-copy) with real but lower-stakes value, and includes a safety assert but no functional bugfix of comparable impact.