fix: Export WS_URL from websocket client

frontend/src/api/websocket.ts

@@ -108,3 +108,19 @@ export class WebSocketClient {
 // Create singleton instance
 export const wsClient = new WebSocketClient();
 
+// Export helper to get WS URL
+export const getWebSocketUrl = (): string => {
+  // Если задан VITE_WS_URL, используем его
+  if (import.meta.env.VITE_WS_URL) {
+    return import.meta.env.VITE_WS_URL;
+  }
+  
+  // Иначе определяем автоматически на основе текущего location
+  const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
+  const host = window.location.host;
+  return `${protocol}//${host}`;
+};
+
+// Export WS_URL for direct usage
+export const WS_URL = `${getWebSocketUrl()}/ws/reviews`;
+