openai/gpt-chat-latest → A (4:1)

Side A makes a user-visible structural change by removing the unnecessary `vote-compare-shell` wrapper from the vote comparison page and updates theme CSS to implement consistent numbered ranking lists across the default, retro, and retro_craft themes with improved counter styling. Side B is overwhelmingly a workspace-wide rustfmt reformat plus tooling configuration (pinning rustfmt/clippy, VS Code settings, minor CSS rule merge), with little functional impact beyond development ergonomics.