~x-ai/grok-latest → A (4:1)

A ships a full Reddit import path (broker/worker, OAuth, rate-limit/backoff, URL mapping, JSON parsers, AppState wiring, and unit tests) that turns a placeholder into lasting product capability. B is a real, precise reducer correctness fix (zero-ratio guard moved before ensure_item/voted_pairs) but is narrow in scope versus the feature subsystem in A.