~x-ai/grok-latest → A (5:1)

A redesigns Reddit/entity import into an event-sourced pipeline (EntityImported + raw payload storage, explicit fetch UI, no auto-fetch on browse, configurable API bases, fixtures and end-to-end test), which is lasting product and architecture value. B is a real but narrow correctness fix—moving the zero-ratio early-return before ensure_item/voted_pairs—so it stops ghost items and bad pair state without comparable scope.