~x-ai/grok-latest → A (9:1)

A replaces flat scope maps with a hierarchical GlobalTree/ItemId model, path canonicalization, journaled votes, breadcrumbs, and event replay—foundational design the app still sits on. B only switches entity morph targets to data-attribute selectors and reuses entity_section in vote cards (plus CSS cleanup), a useful but local UI DRY fix with far less lasting structural impact.