openai/gpt-chat-latest → A (20:1)

Side A fixes a substantive correctness issue by removing shared browser sentinel delegates, changing pending sessions to use an optional delegate for browser logins, updating attribution logic, and adding integration tests that verify multiple human users can vote without erroneous shared AgentBound conflicts. Side B only makes minor UI cleanup by removing or relocating headings and help text in the compose view, with no evident behavioral improvement.