Lazy load notification and keep-online providers

Introduced NotificationProviderWrapper to dynamically load the notification context only on dashboard pages, reducing initial bundle size. KeepOnline component is now also lazy-loaded. Updated app layout to use the new wrapper.

components/layout/NotificationProviderWrapper.tsx

@@ -0,0 +1,34 @@
+"use client";
+
+import { usePathname } from "next/navigation";
+import dynamic from "next/dynamic";
+import type { ReactNode } from "react";
+
+// Lazy load NotificationProvider - only needed on dashboard pages
+// This saves ~5-10KB from initial bundle since it includes polling logic and API calls
+const NotificationProvider = dynamic(
+  () => import("@/lib/notification-context").then(mod => ({ default: mod.NotificationProvider })),
+  { 
+    ssr: false,
+    loading: () => null
+  }
+);
+
+interface NotificationProviderWrapperProps {
+  children: ReactNode;
+}
+
+export function NotificationProviderWrapper({ children }: NotificationProviderWrapperProps) {
+  const pathname = usePathname();
+  
+  // Only load NotificationProvider on dashboard pages (but not admin pages)
+  const isDashboardPage = pathname?.includes("/dashboard") && !pathname?.includes("/dashboard/admin");
+  
+  if (isDashboardPage) {
+    return <NotificationProvider>{children}</NotificationProvider>;
+  }
+  
+  // On non-dashboard pages, render children without provider
+  return <>{children}</>;
+}
+