openai/gpt-chat-latest → A (3:2)

Side A makes the Reddit integration substantially more robust by requiring OAuth when configured, adding a retry with forced token refresh on 401/403, propagating token acquisition errors instead of silently falling back, and improving error handling with targeted truncation and a regression test. Side B adds a useful pool-scoped voting feature and threads the new `pool` parameter through the UI and routing, but it is primarily new application functionality, whereas Side A addresses a production reliability issue that prevents blocked cloud deployments from functioning correctly.