~x-ai/grok-latest → A (3:2)

A systematically threads CanonicalItemUrl through resolve_item, validation HashSets, pair/pool selection, connectivity stats, and scope rank maps while adding Deref on the href newtypes, replacing repeated String/Canonical parse-wrap-clone noise with a lasting type-safe design. B correctly centralizes get-base-url/HOSTNAME and window.location.origin (plus staging deploy trigger) to fix hardcoded OAuth/redirect hosts, but that is narrower env-glue compared with A’s core path model cleanup.