openai/gpt-chat-latest → B (3:2)

Side B fixes user-facing URL generation by using display_path instead of internal storage URLs in vote links, aligning hrefs with the application's displayed path format, and substantially strengthens end-to-end coverage by exercising all 45 pairwise votes and asserting the resulting ranking through the RPC API. Side A improves the visual color gradient by basing row colors on normalized score ranges within a group and adds focused unit tests, but this is primarily a presentation enhancement rather than a functional correctness change.