~x-ai/grok-latest → B (2:5)

B threads CanonicalItemUrl through resolve_item, validation, pair/rank RPCs, and connectivity helpers and adds Deref on href newtypes, cutting repeated String↔canonical wrapping across the API core—a lasting type-design improvement. A is a correct, tested Reddit importer tweak (skip stickied/pinned children) but is a narrow edge-case filter with local scope only.