Unify accept and network threads into io threads

src/config.hpp

@@ -18,14 +18,12 @@ struct ServerConfig {
   std::string unix_socket_path;
   /// Maximum size in bytes for incoming HTTP requests (default: 1MB)
   size_t max_request_size_bytes = 1024 * 1024;
-  /// Number of accept threads for handling incoming connections
-  int accept_threads = 1;
-  /// Number of network I/O threads for epoll processing
-  int network_threads = 1;
+  /// Number of I/O threads for handling connections and network events
+  int io_threads = 1;
   /// Event batch size for epoll processing
   int event_batch_size = 32;
   /// Maximum number of concurrent connections (0 = unlimited)
-  int max_connections = 1000;
+  int max_connections = 50000;
   /// Buffer size for reading from socket connections (default: 16KB)
   size_t read_buffer_size = 16 * 1024;
 };