openai/gpt-chat-latest → B (4:1)

Side B strengthens core data modeling by changing `resolve_item` to return `CanonicalItemUrl`, propagating that typed identifier through validation, ranking, pair selection, and scope-change computation, eliminating repeated parse/wrap conversions and reducing stringly-typed APIs. Side A replaces a rich autocomplete/graph parser with a much simpler paste-and-go flow and deletes substantial parser logic and tests, which simplifies maintenance but also removes existing capabilities rather than improving the underlying architecture.