openai/gpt-chat-latest → A (3:2)

Commit A makes a broader functional improvement to the UI by changing the color-mapping algorithm from list-position-based to score-range-based normalization. It introduces a reusable helper, updates the rendering logic to compute group score bounds, changes the styling behavior, documents the rationale, and adds multiple targeted tests covering edge cases and correctness. Commit B is a useful but narrower data-ingestion fix that skips pinned Reddit posts during import by checking stickied/pinned flags and adds a focused regression test. Both improve correctness, but A affects a more central presentation algorithm and involves a more substantial implementation.