openai/gpt-chat-latest → B (5:1)

Side B adds substantial application functionality: browser session cookies, login/logout flows, web posting wired into the existing RPC path, room-aware thread views, routing, and UI handlers that enable authenticated web use rather than just CLI access. Side A is a documentation-only update that usefully aligns the DSL, guide, and plan with the new wire identity model (removing `@` from API examples and clarifying `--delegate`), but it does not change project behavior.