~x-ai/grok-latest → B (2:5)

B replaces flat scope maps with a hierarchical ItemId/GlobalTree model (path canonicalization, breadcrumbs, journaled tree votes, NodeEnsured), which is lasting core-domain design. A’s fail-closed voting, mock-OAuth gate, Secure cookies, and open-redirect hardening are real security fixes, but they tighten an existing auth layer rather than reshaping the ranking architecture.