Promocode system

frontend/src/pages/admin/AdminLayout.tsx

@@ -12,13 +12,15 @@ import {
   Shield,
   MessageCircle,
   Sparkles,
-  Lock
+  Lock,
+  Gift
 } from 'lucide-react'
 
 const navItems = [
   { to: '/admin', icon: LayoutDashboard, label: 'Дашборд', end: true },
   { to: '/admin/users', icon: Users, label: 'Пользователи' },
   { to: '/admin/marathons', icon: Trophy, label: 'Марафоны' },
+  { to: '/admin/promo', icon: Gift, label: 'Промокоды' },
   { to: '/admin/logs', icon: ScrollText, label: 'Логи' },
   { to: '/admin/broadcast', icon: Send, label: 'Рассылка' },
   { to: '/admin/content', icon: FileText, label: 'Контент' },