openai/gpt-chat-latest → B (3:2)

Side B fixes a fundamental authentication/ownership bug by removing the shared browser sentinel delegate, changing pending sessions to carry an optional agent, ensuring browser-originated writes use no delegate, and adding integration tests proving two different users can both vote without erroneous delegate binding. Side A adds a useful pool-scoped voting workflow with new routing, navigation, and UI links, but it is primarily a feature addition rather than a correctness fix affecting all browser users.