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/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>
+  );
+}