Maintenance Page + Portainer Update

frontend/src/App.jsx

@@ -2,6 +2,7 @@ import React from "react";
 import { NavLink, Route, Routes } from "react-router-dom";
 import Stacks from "./Stacks.jsx";
 import Logs from "./Logs.jsx";
+import Maintenance from "./Maintenance.jsx";
 import logo from "./assets/images/stackpulse.png";
 import { useMaintenance } from "./context/MaintenanceContext.jsx";
 
@@ -54,6 +55,7 @@ export default function App() {
       <main className="max-w-6xl mx-auto px-6 py-6">
         <Routes>
           <Route path="/" element={<Stacks />} />
+          <Route path="/maintenance" element={<Maintenance />} />
           <Route path="/logs" element={<Logs />} />
           <Route path="*" element={<Stacks />} />
         </Routes>