~x-ai/grok-latest → A (3:2)

A redesigns core vote persistence: uuid-keyed dedup with rollback/replace, rankings derived from uuid_votes on load, and a seeded pseudonyms map—replacing blind edge merges and vestigial identity fields. B delivers real product value (safer auth next redirects, richer GitHub resolver + paging/bodies, vote-compare next-pair/nav UX), but it is incremental feature/fix work rather than a lasting storage/identity model change.