openai/gpt-chat-latest → A (5:2)

Side A introduces a substantial new UI architecture: a generic POST /ui endpoint, a typed HtmlUiAction system with JSON template/hole substitution, reusable web-post handlers, routing, and tests, enabling multiple browser UI actions through a shared mechanism. Side B is a well-implemented feature built on that infrastructure, adding a garden-ranking copy action, markdown formatting, UI controls, and integration tests, but it is an incremental capability rather than foundational project design.