~anthropic/claude-sonnet-latest → B (85:15)

Side B fixes a real, subtle correctness bug in the ranking algorithm (wrong divisor causing bipartite oscillation on star topologies), grounds the fix in the cited paper's actual definition, and adds targeted Rust and Clojure regression tests/fixtures proving the fix. Side A is almost entirely rustfmt/whitespace churn plus a tiny CSS dedupe and toolchain pin, which is useful housekeeping but contributes no functional value and is mostly noise/formatting.