Security update: Patch React and Next.js CVE vulnerabilities

Updated React to 19.2.1 and Next.js to 16.0.7 to address critical security vulnerabilities:
- CVE-2025-55182: React Server Components deserialization flaw
- CVE-2025-66478: Next.js RSC implementation vulnerability

Also includes:
- Add PATCH endpoint for geofence updates
- Reorder admin navigation items
- Add geofence update functionality in database layer

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/admin/layout.tsx

@@ -19,10 +19,10 @@ export default function AdminLayout({
   const allNavigation = [
     { name: "Dashboard", href: "/admin", roles: ['ADMIN', 'VIEWER'], superAdminOnly: false },
     { name: "Devices", href: "/admin/devices", roles: ['ADMIN', 'VIEWER'], superAdminOnly: false },
-    { name: "Geofences", href: "/admin/geofences", roles: ['ADMIN'], superAdminOnly: false },
     { name: "MQTT Provisioning", href: "/admin/mqtt", roles: ['ADMIN'], superAdminOnly: false },
-    { name: "Setup Guide", href: "/admin/setup", roles: ['ADMIN', 'VIEWER'], superAdminOnly: false },
+    { name: "Geofences", href: "/admin/geofences", roles: ['ADMIN'], superAdminOnly: false },
     { name: "Users", href: "/admin/users", roles: ['ADMIN'], superAdminOnly: false },
+    { name: "Setup Guide", href: "/admin/setup", roles: ['ADMIN', 'VIEWER'], superAdminOnly: false },
     { name: "Settings", href: "/admin/settings", roles: ['ADMIN'], superAdminOnly: true },
     { name: "Emails", href: "/admin/emails", roles: ['ADMIN'], superAdminOnly: true },
   ];