Implement relative paths for frontend API and WebSocket connections

- Created `.env.production` file to define relative paths for production deployment.
- Updated frontend API and WebSocket client to use environment variables for dynamic URL handling.
- Enhanced deployment scripts (`deploy-ubuntu.sh`, `start.sh`, `start.bat`) to generate `.env.production` automatically.
- Added `PRODUCTION_URLS.md` for documentation on production URL configuration and troubleshooting.

frontend/src/api/client.ts

@@ -1,7 +1,8 @@
 import axios from 'axios';
 import type { Repository, RepositoryCreate, Review, ReviewStats } from '../types';
 
-const API_BASE_URL = import.meta.env.VITE_API_URL || 'http://localhost:8000/api';
+// Используем относительный путь для production или env для development
+const API_BASE_URL = import.meta.env.VITE_API_URL || '/api';
 
 const api = axios.create({
   baseURL: API_BASE_URL,

frontend/src/api/websocket.ts

@@ -1,7 +1,5 @@
 import { WebSocketMessage } from '../types';
 
-const WS_URL = import.meta.env.VITE_WS_URL || 'ws://localhost:8000';
-
 export class WebSocketClient {
   private ws: WebSocket | null = null;
   private listeners: Map<string, Set<(data: any) => void>> = new Map();
@@ -9,13 +7,26 @@ export class WebSocketClient {
   private maxReconnectAttempts = 5;
   private reconnectDelay = 3000;
 
+  private 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}`;
+  }
+
   connect() {
     if (this.ws?.readyState === WebSocket.OPEN) {
       return;
     }
 
     try {
-      this.ws = new WebSocket(`${WS_URL}/ws/reviews`);
+      const wsUrl = this.getWebSocketUrl();
+      this.ws = new WebSocket(`${wsUrl}/ws/reviews`);
 
       this.ws.onopen = () => {
         console.log('WebSocket connected');