openai/gpt-chat-latest → B (4:1)

Side B adds a substantive end-to-end feature by introducing a `room create` CLI command, wiring it through the RPC path, updating the server to handle the simplified `RoomCreate { slug }` API, and adjusting tests and documentation accordingly. Side A improves test infrastructure by replacing manually enumerated Kaocha test suites with automatic `^test\..+` discovery, which reduces maintenance, but its impact is narrower than the new user-facing capability and associated API simplification in Side B.