~x-ai/grok-latest → B (1:3)

B replaces ad-hoc per-domain combinators (engine.rs + large registry normalize path) with a graph/DFA-based URL canonicalization and hierarchy model, which is core ItemId identity infrastructure. A is a solid but peripheral UX polish: multi-command cli_panel grouping, click-to-copy rows, CSS, and JS string safety asserts—real value, but not foundational like B’s redesign.