Improve file transfer progress tracking and display

- Add dynamic transfer speed calculation
- Compute and display estimated remaining transfer time
- Enhance remaining bytes display with more informative status
- Update transfers table with more detailed transfer progress information

ComConfigCopy.py

@@ -1068,15 +1068,27 @@ class SerialAppGUI(tk.Tk):
             
             # Вычисляем прогресс
             progress = f"{bytes_sent}/{filesize} байт"
-            remaining = filesize - bytes_sent
+            remaining_bytes = filesize - bytes_sent
             elapsed_time = time.time() - start_time
             
+            # Вычисляем скорость передачи (байт/сек)
+            if elapsed_time > 0:
+                transfer_speed = bytes_sent / elapsed_time
+                # Вычисляем оставшееся время
+                if transfer_speed > 0:
+                    remaining_time = remaining_bytes / transfer_speed
+                    remaining_str = f"{remaining_bytes} байт (~{int(remaining_time)}с)"
+                else:
+                    remaining_str = f"{remaining_bytes} байт (неизвестно)"
+            else:
+                remaining_str = f"{remaining_bytes} байт (вычисляется...)"
+            
             # Добавляем запись в таблицу
             self.transfers_tree.insert("", END, values=(
                 f"{client_addr[0]}:{client_addr[1]}",
                 filename,
                 progress,
-                f"{remaining} байт",
+                remaining_str,
                 f"{elapsed_time:.1f}с"
             ))