~x-ai/grok-latest → A (2:1)

A lands lasting architecture: full Reddit payloads as EntityImported events with entity_raw + derived views, explicit fetch UI (no auto-fetch on browse), configurable API bases, and an end-to-end mock import test. B improves pair selection (attach isolates before isolate–isolate, then zip adjacent ranks) with solid unit tests, but it refines one ranking heuristic rather than the data/import model.