openai/gpt-chat-latest → B (1:5)

Side B adds substantial new functionality: a dedicated pairwise voting UI, pair-selection logic that prioritizes bridging disconnected ranking components, in-place UI morphing after votes, canonical ItemId normalization via from_storage, and accompanying integration/unit tests. Side A fixes a real reducer bug by moving the zero-ratio guard before ensure_item/voted_pairs side effects and strengthens the regression test, but it is a narrowly scoped correctness fix compared with the broader lasting capabilities introduced in Side B.