add oled 12864

WebServerManager.h

@@ -31,7 +31,8 @@ public:
     // Format") to all connected WebSocket clients for this frame.
     // No-op if no clients are connected.
     void broadcastFrame(const RadarFrame &frame);
-
+    
+    IPAddress getLocalIP() const { return WiFi.localIP(); }
     bool isWifiConnected() const { return WiFi.status() == WL_CONNECTED; }
 
 private: