openai/gpt-chat-latest → B (4:1)

Side B introduces a substantial new capability: pool-scoped voting by adding a `pool` parameter throughout the vote flow, enabling `/vote?pool=<parent>` to choose sibling pairs, preserving pool context across navigation and vote submissions, and exposing the feature with a new 'vote on children' entry point. Side A is a focused UX improvement that makes pinned child-group icons clickable to unpin via the existing `set_garden_pin` flow, with supporting CSS and browser tests, but it extends an existing interaction rather than adding comparable new functionality.