~x-ai/grok-latest → B (2:1)

B adds lasting core product design: bridge-preferring pair selection in pair.rs, a dedicated vote compare UI with in-place morphs (vote_recorded_morph), and durable ItemId::from_storage normalization with tests—not mere churn. A is a high-value correctness fix (optional agent, drop shared WEB_BROWSER_AGENT so multi-user browser votes no longer hit AgentBound), but narrower in scope than B’s voting infrastructure.