Security recovery: hold sweep, dashboard updates, and admin fixes.

frontend/src/app/not-found.tsx

@@ -1,5 +1,7 @@
 import type { Metadata } from 'next';
-import Link from 'next/link';
+import Header from '@/components/layout/Header';
+import Footer from '@/components/layout/Footer';
+import { NotFoundMessage } from '@/components/NotFoundMessage';
 
 export const metadata: Metadata = {
   title: 'Page Not Found – Spanglish',
@@ -12,30 +14,12 @@ export const metadata: Metadata = {
 
 export default function NotFound() {
   return (
-    <div className="min-h-screen flex items-center justify-center bg-secondary-gray">
-      <div className="text-center px-4">
-        <h1 className="text-6xl font-bold text-primary-dark mb-4">404</h1>
-        <h2 className="text-2xl font-semibold text-gray-700 mb-4">
-          Page Not Found
-        </h2>
-        <p className="text-gray-600 mb-8 max-w-md mx-auto">
-          The page you are looking for might have been removed, had its name changed, or is temporarily unavailable.
-        </p>
-        <div className="flex flex-col sm:flex-row gap-4 justify-center">
-          <Link
-            href="/"
-            className="inline-flex items-center justify-center px-6 py-3 bg-primary-yellow text-primary-dark font-semibold rounded-btn hover:bg-primary-yellow/90 transition-colors"
-          >
-            Go Home
-          </Link>
-          <Link
-            href="/events"
-            className="inline-flex items-center justify-center px-6 py-3 border-2 border-primary-dark text-primary-dark font-semibold rounded-btn hover:bg-primary-dark hover:text-white transition-colors"
-          >
-            View Events
-          </Link>
-        </div>
-      </div>
+    <div className="min-h-screen flex flex-col">
+      <Header />
+      <main className="flex-1 flex items-center justify-center bg-secondary-gray">
+        <NotFoundMessage />
+      </main>
+      <Footer />
     </div>
   );
 }