Fix admin panel authentication and navigation for static export

- Replace router.push with window.location.href for reliable redirects
- Fix auth check to wait for component mount before accessing localStorage
- Ensure proper redirect after successful login
- Fix redirect behavior on all admin pages (dashboard, colors, requests)

app/upadaj/requests/page.tsx

@@ -40,9 +40,9 @@ export default function ColorRequestsAdmin() {
   const checkAuth = () => {
     const token = localStorage.getItem('authToken');
     const expiry = localStorage.getItem('tokenExpiry');
-    
+
     if (!token || !expiry || new Date().getTime() > parseInt(expiry)) {
-      router.push('/upadaj');
+      window.location.href = '/upadaj';
     }
   };