feat(admin): Control Center redesign, Explore dual-view и полный RU/EN i18n

Refs EventHub/EventHubFrontAdmin#32

src/components/ProtectedRoute.tsx

@@ -1,8 +1,8 @@
 import React from 'react';
 import { Navigate, Outlet } from 'react-router-dom';
-import { Spin } from 'antd';
-import { useAuthStore } from '../store/authStore';
-import ForbiddenPage from '../pages/errors/ForbiddenPage';
+import { useAuthStore } from '@/store/authStore';
+import ForbiddenPage from '@/pages/errors/ForbiddenPage';
+import { Skeleton } from '@/components/ui/skeleton';
 
 interface Props {
     allowedRoles?: string[];
@@ -13,8 +13,9 @@ const ProtectedRoute: React.FC<Props> = ({ allowedRoles }) => {
 
     if (!isInitialized) {
         return (
-            <div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100vh' }}>
-                <Spin size="large" />
+            <div className="flex min-h-screen items-center justify-center gap-3 p-8">
+                <Skeleton className="h-10 w-10 rounded-full" />
+                <Skeleton className="h-4 w-40" />
             </div>
         );
     }