openai/gpt-chat-latest → A (5:1)

Side A changes the ranking color algorithm from list-position-based to score-based min–max normalization within each group, improving the UI so similar scores receive similar colors regardless of group size, and adds focused tests for the new behavior and edge cases such as tied scores. Side B mainly removes a redundant early-return guard and updates a test to reflect existing validation and edge-skipping behavior, which is a useful cleanup but a much smaller, non-functional change.