openai/gpt-chat-latest → A (100:1)

Side A adds a real end-user capability by implementing the `room create` CLI command, wiring it through RPC, creating room events and grants on the server, updating reducer data structures, and adding tests and documentation. Side B only deletes planning documents (`plan.md` and `plan2.md`), which removes design notes but does not improve or extend the project's runtime behavior.