feat: Introduce server type management in ServerManager, enhancing server configuration with type selection and validation, and update example-servers.json to include server types for improved data consistency.

backend/server.js

@@ -295,10 +295,19 @@ app.post('/api/ip-ranges', writeLimiter, ipRangesRoutes.post);
 // === JSON DATA ROUTES (используют фабрики) ===
 
 // Servers
+const SERVER_TYPES = ['jumphost', 'exit'];
 const serversRoutes = createJsonDataRoutes('servers.json', (server, i) => {
-        if (!server.ip || !server.dns || !server.country || !server.provider || !server.tunnel) {
+  if (!server.ip || !server.dns || !server.country || !server.provider || !server.tunnel) {
     return `Server at index ${i} is missing required fields`;
   }
+
+  const normalizedType = String(server.type || '').toLowerCase();
+  if (!SERVER_TYPES.includes(normalizedType)) {
+    return `Server at index ${i} has invalid type (allowed: ${SERVER_TYPES.join(', ')})`;
+  }
+
+  // Нормализуем тип, чтобы в S3 всегда лежали одинаковые значения
+  server.type = normalizedType;
   return null;
 });