openai/gpt-chat-latest → A (3:2)

Side A introduces a new browser UI command architecture with a unified POST /ui endpoint, typed HtmlUiAction parsing from JSON templates with form-hole substitution, reusable web-post handlers, and supporting tests, creating reusable infrastructure beyond a single feature. Side B adds valuable Reddit-specific rendering (thumbnails, full images, link extraction, new metadata fields, and tests), but its impact is narrower and primarily enhances one content type rather than establishing a broader interaction framework.