openai/gpt-chat-latest → A (4:3)

Side A removes the dedicated `ExpandNewThreadForm` HTML UI action and its server dispatch/tests, instead rendering the collapsed compose or login hint directly in the SSR `#new-thread-ui-slot` on the home page. This eliminates duplicated flow and unnecessary client/server interaction, simplifying the architecture. Side B improves the CLI panel by supporting grouped commands, click-to-copy rows, and adding assertions for JS-safe embedded strings, but these are primarily UX and component enhancements rather than removing a redundant subsystem.