feature to send image from tcp connection

epaper_manager.h

@@ -17,6 +17,14 @@ void epaper_start_background_thread();
  */
 void epaper_send_update(const char *entry, bool finish_line);
 
+/**
+ * Displays a full-screen raw image.
+ * @param image_data Pointer to the raw image data (1 bit per pixel).
+ *                   The buffer must be allocated with malloc and will be freed by the display core.
+ * @param len Length of the image data in bytes.
+ */
+void epaper_display_full_image(const unsigned char* image_data, unsigned int len);
+
 /**
  * Clears all text entries and refreshes the display to white.
  */