~x-ai/grok-latest → A (2:1)

A removes incremental edge/index caches from GroupState (ensure_item, rollback_weights, voted_pairs) in favor of ScopeVotes that keep only uuid_votes/recent_votes and rebuild edges at rank time—a lasting single-source-of-truth fix across reducer, ranking, storage, and pair logic. B adds a real url_rules engine and full-URL ItemIds, but much of the diff is mechanical https:// string churn in tests and call sites rather than equally deep design consolidation.