~x-ai/grok-latest → B (1:18)

A only adds a missing GITHUB_API_BASE_URL env default (a minimal NameError fix). B redesigns Reddit import around persisted EntityImported events with full payloads, explicit user-triggered fetch UI, configurable API bases, dotenv support, reducer/state replay, fixtures, and end-to-end tests—delivering lasting architecture and behavior rather than a one-line config patch.