openai/gpt-chat-latest → A (3:2)

Side A introduces a substantial architectural improvement by moving vote settlement into a dedicated asynchronous worker, precomputing and caching ranking scores, switching ranking reads to shared locks, and removing an obsolete demo counter feature. This reduces request-path work and cleanly separates persistence, score computation, and rendering, whereas Side B mainly adds Reddit entity import, explicit fetch UI, payload persistence, and configuration support, which is useful but more feature-specific and less foundational to the project's core behavior.