~x-ai/grok-latest → A (4:1)

A introduces the full vote-compare feature surface (new vote.rs UI, morph-after-vote path replacing next-URL redirects, ItemId::from_storage normalization used in votes/Reddit import, JsBuilder morph helper, CSS, and integration/e2e tests) plus the initial pair.rs bridge-aware selector. B only refines suggest_next_pair_in_pool with bridge sub-priorities and adjacent-rank zip ordering on that existing module—valuable ranking logic, but incremental on A’s foundation.