openai/gpt-chat-latest → A (5:1)

Side A implements a coherent new feature with lasting behavior changes: `/vote` gains pool-scoped navigation, optional `pool` query handling, automatic pair selection from a parent's children, UI links to 'vote on children', and propagation of pool context through post-success navigation. Side B mixes many unrelated changes, including a large checked-in design document (`plan2.md`) and broad UI/auth refactoring; while it contains useful work, the patch is diffuse and harder to attribute to a single focused, durable improvement than Side A's end-to-end voting enhancement.