fix(sessions): centralize global polling

packages/ui/src/apps/VSCodeApp.tsx

@@ -10,6 +10,7 @@ import { ErrorBoundary } from '@/components/ui/ErrorBoundary';
 import { OpenCodeUpdateToast } from '@/components/update/OpenCodeUpdateToast';
 import { VSCodeLayout } from '@/components/layout/VSCodeLayout';
 import { usePushVisibilityBeacon } from '@/hooks/usePushVisibilityBeacon';
+import { useGlobalSessionsPolling } from '@/hooks/useGlobalSessionsPolling';
 import { useRouter } from '@/hooks/useRouter';
 import { useWindowTitle } from '@/hooks/useWindowTitle';
 import { opencodeClient } from '@/lib/opencode/client';
@@ -56,6 +57,7 @@ export function VSCodeApp({ apis }: VSCodeAppProps) {
   usePushVisibilityBeacon({ enabled: true });
   useWindowTitle();
   useRouter();
+  useGlobalSessionsPolling(panelType !== 'agentManager');
 
   React.useEffect(() => {
     document.documentElement.classList.toggle('wide-chat-layout', wideChatLayoutEnabled);