openai/gpt-chat-latest → A (3:1)

Side A refactors `vote_compare_post_success_js` by removing unused parameters and the logic that rebuilt the post preview, leaving the function focused on updating the vote edge history and simplifying its call site. Side B mostly changes the new-thread form presentation (removing the toggle, labels, and altering placeholders/button text) and drops metadata fields from the JSON payloads, which is primarily UI churn with less clear lasting architectural value.