openai/gpt-chat-latest → A (4:1)

Side A substantially evolves the Reddit import design by replacing automatic fetch-on-browse with an explicit user-triggered fetch UI, persisting full API payloads as `EntityImported` events, replaying them into state, adding configurable API endpoints, dotenv support, and tests for replay and end-to-end import. Side B mainly introduces the initial background Reddit fetch worker and automatic fetching on browse, but lacks the event-sourced persistence, explicit fetch workflow, configurability, and broader architectural improvements that make Side A's changes more durable.