~x-ai/grok-latest → B (2:1)

B fixes real product behavior on a core path: delegate attribution is passed out-of-band via `delegate_opt` instead of embedded in body text, and `suggest_next_vote_pair` no longer silently falls back to the full item set when the sibling pool is too small. A is a clean, tested Reddit filter for stickied/pinned posts, but it is narrower import hygiene; much of B’s remaining diff is route rename/UI cleanup, so A still carries solid secondary value.