openai/gpt-chat-latest → B (4:1)

Side B adds a substantive new capability: pool-scoped voting, allowing `/vote?pool=...` to select comparison pairs from a parent's children, preserving pool context through vote submission and next-pair navigation, and exposing the feature with a new 'vote on children' UI. Side A is largely a broad UI/theme integration plus room-aware URL adjustments; while useful, much of it is plumbing and presentation, whereas Side B introduces a coherent new workflow with changes across routing, state propagation, and navigation logic.