~x-ai/grok-latest → A (2:1)

A introduces lasting core design: form_template hole-filling, typed HtmlUiAction, a unified POST /ui dispatcher, and shared run_* web_post paths, plus the expandable new-thread UI—reusable infrastructure with tests. B’s SSE fetch pipeline and oneshot FetchJobResult are real improvements to one flow, but much of the diff is logging, module moves, lockfile/deps, and trimmed tests rather than broader foundational value.