openai/gpt-chat-latest → A (20:1)

Side A introduces a new batched RPC architecture (`/api/v0/rpc`), refactors the CLI to use typed RPC commands, separates room and forum concepts, migrates event and reducer data from thread IDs to room/thread metadata, and centralizes validation into reusable modules. Side B is a useful incremental feature—adding a `RoomList` RPC command, CLI subcommand, and integration tests for per-user room visibility—but it builds on the infrastructure established by Side A rather than changing the project's core design.