~anthropic/claude-sonnet-latest → B (6:4)

B is a broader type-safety refactor that removes stringly-typed item paths in favor of CanonicalItemUrl/newtype Deref impls, reducing risk of mismatched string keys across resolve_item, connectivity stats, and RPC pairing logic—real structural improvement with test coverage. A is a smaller, well-tested fix improving color-gradient correctness for rank rows, which is valuable but narrower in scope and impact than B's cross-cutting type refactor.