Extend user session duration to improve the overall user experience

Removes `useSessionTimeout` hook and increases the session `maxAge` to 24 hours in `server/routes.ts`.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: dec54137-d5a2-4406-8ad4-5f2f9fb110bf
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/0715008c-7244-40f4-befc-26c014852236/0fcd8a07-209c-4438-b4c7-bd4229e22926.jpg

client/src/App.tsx

@@ -3,15 +3,11 @@ import { queryClient } from "./lib/queryClient";
 import { Toaster } from "@/components/ui/toaster";
 import { TooltipProvider } from "@/components/ui/tooltip";
 import { useAuth } from "@/hooks/useAuth";
-import { useSessionTimeout } from "@/hooks/useSessionTimeout";
 import Login from "@/pages/Login";
 import Dashboard from "@/pages/Dashboard";
 
 function AppContent() {
   const { isAuthenticated, isLoading } = useAuth();
-  
-  // Initialize session timeout management
-  useSessionTimeout();
 
   if (isLoading) {
     return (