~x-ai/grok-latest → A (2:1)

A lands a lasting identity redesign: UUID as sole principal, multi-provider OAuth *linking* (GitHub + Reddit) with logged-in attach/conflict handling, private linked-provider UI, and a real projection fix (pending_weights so multi-link trust updates in one batch). B adds useful vote-compare morph UX, bridge-aware pair selection, and ItemId::from_storage normalization, but much of the diff is module extraction/refactor and UI wiring rather than comparable foundational design.