openai/gpt-chat-latest → A (5:1)

Side A introduces an entire Reddit integration layer: a rate-limited HTTP client, multiple API endpoints, structured serde models for Reddit responses, custom deserializers, error handling, and helper methods for working with posts and comments. Side B improves configuration by centralizing base-URL generation, replacing hardcoded callback URLs with a shared HOSTNAME-based utility and window.location.origin, and changing the deployment workflow to staging, but its impact is more localized.