~x-ai/grok-latest → A (2:1)

A redesigns the core sorter DSL (parser split into block-prefixed votes vs path-then-body items, pending-block handling, legacy rejection) so explanation-first votes become the lasting language contract project-wide. B is a real, precise fix—Reddit children attach via apply_entity_under_parent without ensure_path segment pollution, and unranked labels use entity titles—but it is scoped to import/UI wiring rather than the product’s primary syntax.