openai/gpt-chat-latest → A (5:2)

Side A delivers substantial functional infrastructure: browser session cookies, login/logout flow, web posting that reuses the RPC path, private room pages with capability checks, room-aware routing, and the wiring needed to make the room UI usable again. Although it also includes an unrelated planning document, the code changes establish lasting authentication, routing, and room UI architecture, whereas Side B adds a useful but narrower feature—a clipboard copy action for garden rankings with supporting UI, tests, and markdown formatting.