Static classes, enterprise networks properly handled

include/WiFi.hpp

@@ -14,6 +14,10 @@ class WiFi {
     const std::string password, const wifi_auth_mode_t authMode);
   static bool isConnected();
   static void scanAndUpdateSSIDList();
+  
+  // Helper to check if auth mode requires enterprise credentials
+  static bool isEnterpriseMode(wifi_auth_mode_t authMode);
+  
   private:
   static void processScanResults();
   static std::atomic<bool> authFailed;
@@ -27,6 +31,4 @@ class WiFi {
   static std::string getIP();
 };
 
-extern WiFi bmWiFi;
-
 #endif