~anthropic/claude-sonnet-latest → A (8:1)

Side A fixes a genuinely broken test (missing #[test] attribute meant the test never ran), cleans up clippy warnings across multiple files, and adds a documented dead_code allowance for shared test helpers—concrete, verified improvements to code quality. Side B is a one-line tweak changing a disabled span into an anchor tag with a dead '#' href, a trivial and arguably questionable change with minimal lasting value.