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

Side B performs a substantive type-safety refactor (resolve_item returns CanonicalItemUrl, Deref newtype impls, typed pools/keys throughout rpc.rs and validate.rs), reducing stringly-typed bugs across a broad surface. Side A is a smaller, useful UI/test fix (display_path in hrefs plus a strengthened browser test) but touches far less of the codebase and has narrower long-term impact than B's type-system hardening.