openai/gpt-chat-latest → B (3:2)

Side B fixes a concrete correctness issue by removing shared browser sentinel delegates, changing pending sessions to use an optional delegate for browser logins, and ensuring browser-authored actions no longer create incorrect agent bindings that blocked multiple human users. Side A adds valuable deployment infrastructure, monitoring UI, SSE audit streaming, and production configuration, but it also bundles a large amount of operational and UI work whose long-term value is broader rather than addressing a core correctness bug; B's focused behavioral fix is more fundamental and is backed by integration tests covering the multi-user voting scenario.