Implement rate limiting and enhance authentication flow

- Added rate limiting configuration for authentication endpoints, allowing customizable request limits via environment variables.
- Updated authentication flow to utilize HttpRequest for cookie management, ensuring secure handling of refresh tokens.
- Introduced a new endpoint to retrieve user subscription details.
- Enhanced the handling of Telegram bot token validation to prevent errors with empty tokens.
- Updated the application to serialize enums as strings for better documentation and compatibility with TypeScript.
- Improved test coverage for new features and adjustments in command handlers.

frontend/src/main.tsx

@@ -1,10 +1,13 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import { RouterProvider } from '@tanstack/react-router'
 import './index.css'
-import './lib/i18n'
-import { ThemeProvider } from './lib/theme'
-import App from './App.tsx'
+import './shared/lib/i18n'
+import { ThemeProvider } from './theme/ThemeProvider'
+import { ToastProvider } from './shared/ui/toast-store'
+import { RealtimeProvider } from './shared/realtime/RealtimeProvider'
+import { router } from './router'
 
 const queryClient = new QueryClient()
 
@@ -12,7 +15,11 @@ createRoot(document.getElementById('root')!).render(
   <StrictMode>
     <QueryClientProvider client={queryClient}>
       <ThemeProvider>
-        <App />
+        <ToastProvider>
+          <RealtimeProvider>
+            <RouterProvider router={router} />
+          </RealtimeProvider>
+        </ToastProvider>
       </ThemeProvider>
     </QueryClientProvider>
   </StrictMode>,