openai/gpt-chat-latest → A (4:3)

Side A replaces a Reddit import placeholder with a working background fetch system: it adds a broker/worker, OAuth support, rate-limit handling, URL mapping, JSON parsing into EntityData, and integrates lazy fetching into state and page browsing. Side B delivers substantial UI wiring for browser sessions, room pages, posting, and routing, but it is primarily application interface expansion, while Side A establishes a reusable backend integration with deduplication, caching, and tests that adds enduring infrastructure.