~x-ai/grok-latest → A (2:1)

A fixes core import correctness: children attach via apply_entity_under_parent without ensure_path pulling intermediate Reddit comment-path segments, and ranking shows real titles via child_label, with integration coverage for children SSE. B adds lasting Reddit UI (thumbs, image_url/link_url, render module) but is presentation polish on top of that wiring, not a structural bugfix.