~anthropic/claude-sonnet-latest → B (8:2)

Side B fixes a real correctness bug in the rank-centrality algorithm (wrong divisor causing bipartite oscillation on star topologies), grounds the fix in the cited paper's definition, and adds substantial regression coverage (Rust unit test plus Clojure end-to-end fixtures). Side A is a data-structure swap (Deque->List/VecDeque->Vec) that changes cap semantics from write-time truncation to read-time slicing, which is reasonable cleanup but lower-impact than a genuine algorithmic bugfix with broad topology test coverage.