openai/gpt-chat-latest → A (4:1)

Side A changes the ranking visualization to derive row colors from each group's actual score range instead of list position, adding a dedicated `score_gradient_t` function, updating rendering to compute per-group min/max scores, and including focused tests for normalization, tied scores, and stability. Side B is a broad CLI and documentation reshaping that mainly renames and reorganizes commands (`ingest` to `forum post`, `forum` to `forum list/show`) and updates help text and tests, providing usability improvements but comparatively less enduring functional value.