Update Lighthouse report for /settings/profile and fix runtime errors

- Updated `lighthouse-report.json` to reflect audit for `http://localhost:3000/settings/profile`.
- Resolved `CHROME_INTERSTITIAL_ERROR` runtime issues.
- Added HTTPS and performance audit metrics, improving accuracy and insights.

frontend/src/app/admin/layout.tsx

@@ -0,0 +1,34 @@
+/**
+ * Admin Route Group Layout
+ * Wraps all admin routes with AuthGuard requiring superuser privileges
+ */
+
+import type { Metadata } from 'next';
+import { AuthGuard } from '@/components/auth';
+import { Header } from '@/components/layout/Header';
+import { Footer } from '@/components/layout/Footer';
+
+export const metadata: Metadata = {
+  title: {
+    template: '%s | Admin | FastNext Template',
+    default: 'Admin Dashboard',
+  },
+};
+
+export default function AdminLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <AuthGuard requireAdmin>
+      <div className="flex min-h-screen flex-col">
+        <Header />
+        <main className="flex-1">
+          {children}
+        </main>
+        <Footer />
+      </div>
+    </AuthGuard>
+  );
+}

frontend/src/app/admin/page.tsx

@@ -0,0 +1,60 @@
+/**
+ * Admin Dashboard Page
+ * Placeholder for future admin functionality
+ * Protected by AuthGuard in layout with requireAdmin=true
+ */
+
+import type { Metadata } from 'next';
+
+export const metadata: Metadata = {
+  title: 'Admin Dashboard',
+};
+
+export default function AdminPage() {
+  return (
+    <div className="container mx-auto px-4 py-8">
+      <div className="space-y-6">
+        <div>
+          <h1 className="text-3xl font-bold tracking-tight">
+            Admin Dashboard
+          </h1>
+          <p className="mt-2 text-muted-foreground">
+            Manage users, organizations, and system settings
+          </p>
+        </div>
+
+        <div className="grid gap-4 md:grid-cols-2 lg:grid-cols-3">
+          <div className="rounded-lg border bg-card p-6">
+            <h3 className="font-semibold text-lg mb-2">Users</h3>
+            <p className="text-sm text-muted-foreground">
+              Manage user accounts and permissions
+            </p>
+            <p className="text-xs text-muted-foreground mt-4">
+              Coming soon...
+            </p>
+          </div>
+
+          <div className="rounded-lg border bg-card p-6">
+            <h3 className="font-semibold text-lg mb-2">Organizations</h3>
+            <p className="text-sm text-muted-foreground">
+              View and manage organizations
+            </p>
+            <p className="text-xs text-muted-foreground mt-4">
+              Coming soon...
+            </p>
+          </div>
+
+          <div className="rounded-lg border bg-card p-6">
+            <h3 className="font-semibold text-lg mb-2">System</h3>
+            <p className="text-sm text-muted-foreground">
+              System settings and configuration
+            </p>
+            <p className="text-xs text-muted-foreground mt-4">
+              Coming soon...
+            </p>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}