feat: add admin page

frontend/src/App.jsx

@@ -9,6 +9,7 @@ import Contact from "./pages/Contact";
 import Cart from "./pages/Cart";
 import Profile from "./pages/Profile";
 import ItemPage from "./pages/ItemPage";
+import AdminPage from "./pages/AdminPage";
 
 const PrivateRoute = ({ children }) => {
   const token = localStorage.getItem("token");
@@ -19,6 +20,21 @@ const PrivateRoute = ({ children }) => {
   return children;
 };
 
+const AdminRoute = ({ children }) => {
+  const token = localStorage.getItem("token");
+  const user = JSON.parse(localStorage.getItem("user") || "{}");
+
+  if (!token) {
+    return <Navigate to="/login" replace />;
+  }
+
+  if (user.role !== "Админ") {
+    return <Navigate to="/" replace />;
+  }
+
+  return children;
+};
+
 export default function App() {
   return (
     <BrowserRouter>
@@ -38,6 +54,14 @@ export default function App() {
             </PrivateRoute>
           }
         />
+        <Route
+          path="/admin"
+          element={
+            <AdminRoute>
+              <AdminPage />
+            </AdminRoute>
+          }
+        />
         <Route path="items/:id" element={<ItemPage />} />
         <Route path="*" element={<NotFoundPage />} />
       </Routes>