Move dashboard to root level route

- Dashboard now accessible at /dashboard instead of /upadaj/dashboard
- Updated all navigation links to use new /dashboard route
- Login page still at /upadaj, redirects to /dashboard on success
- Colors and requests remain under /upadaj prefix
- Updated test files to reference new dashboard path

app/upadaj/colors/page.tsx

@@ -194,7 +194,7 @@ export default function ColorsManagement() {
             <h2 className="text-xl font-bold text-gray-900 dark:text-white mb-6">Admin Panel</h2>
             <nav className="space-y-2">
               <a
-                href="/upadaj/dashboard"
+                href="/dashboard"
                 className="block px-4 py-2 text-gray-700 dark:text-gray-300 hover:bg-gray-100 dark:hover:bg-gray-700 rounded"
               >
                 Filamenti

app/upadaj/page.tsx

@@ -33,7 +33,7 @@ export default function AdminLogin() {
       trackEvent('Admin', 'Login', 'Success');
 
       // Redirect to admin dashboard using window.location for static export
-      window.location.href = '/upadaj/dashboard';
+      window.location.href = '/dashboard';
     } catch (err: any) {
       setError('Neispravno korisničko ime ili lozinka');
       console.error('Login error:', err);

app/upadaj/requests/page.tsx

@@ -125,7 +125,7 @@ export default function ColorRequestsAdmin() {
           <h1 className="text-3xl font-bold text-gray-800 dark:text-gray-100">Zahtevi za Boje</h1>
           <div className="space-x-4">
             <Link
-              href="/upadaj/dashboard"
+              href="/dashboard"
               className="px-4 py-2 bg-gray-600 text-white rounded hover:bg-gray-700"
             >
               Inventar