openai/gpt-chat-latest → B (4:1)

Side B changes the core ranking algorithm from contributor-level to commit-level by pairwise-ranking every eligible commit, rolling scores back up to contributors, updating evidence records, UI pages, and tests to reflect commit rankings. Side A mostly replaces an interactive autocomplete/parser graph with a much simpler paste-and-go URL parser and redirect, deleting substantial functionality in favor of a narrower workflow, even though it simplifies the implementation.