openai/gpt-chat-latest → A (4:1)

Side A replaces synchronous vote handling with a dedicated settlement worker that batches event-log writes, computes and caches rankings once, adds startup cache warming, and switches ranking reads to use cached data with read locks instead of recomputation under a write lock. It also removes the temporary demo-counter feature and related code, while Side B is a focused functional fix that correctly attaches imported Reddit children under the parent and displays child titles in the unranked list, improving import behavior but with a narrower impact.