Add SMS templates UI, prepaid balance settings, and list filter layout.

Business settings manage templates and balance; Super Admin verifies templates and tops up via SMS settings; filters use a separate panel with even field gaps.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/super-admin/src/components/Sidebar.tsx

@@ -1,5 +1,5 @@
 import { NavLink, useNavigate } from 'react-router-dom'
-import { Home, Building2, Users, Globe, FileText, Settings, HelpCircle, LogOut } from 'lucide-react'
+import { Home, Building2, Users, Globe, FileText, MessageSquareText, Settings, HelpCircle, LogOut } from 'lucide-react'
 import { useAuth } from '../context/AuthContext'
 import meshkeeLogo from '../assets/meshkee-logo.png'
 import styles from './Sidebar.module.css'
@@ -10,6 +10,7 @@ const navItems = [
   { icon: Users, label: 'Users', to: '/users' },
   { icon: Globe, label: 'Websites', to: '/websites' },
   { icon: FileText, label: 'Templates', to: '/templates' },
+  { icon: MessageSquareText, label: 'SMS Templates', to: '/sms-templates' },
   { icon: Settings, label: 'Settings', to: '/settings' },
 ]