Fix rsync command to exclude target directory to prevent copying into itself

- Added dynamic exclude for target directory in rsync command
- Uses f'--exclude={target_mount}' to exclude the target mount point
- This prevents rsync from trying to copy the target directory into itself
- Matches the behavior of the original auto-installer.sh script
- Ensures clean system copy without recursive target directory issues

This resolves potential issues where rsync might attempt to copy
the target directory into itself during the system copy process.

autoinstaller_gui/autoinstallergui.py

@@ -725,8 +725,11 @@ class InstallerWorker(QThread):
         self.log("Starting system copy with dynamic progress...")
 
         # Use rsync with progress output for dynamic updates
+        # Exclude the target directory to prevent copying into itself
+        target_exclude = f'--exclude={target_mount}'
         cmd = [
             'rsync', '-av', '--progress', '--stats', '--human-readable',
+            target_exclude,
             '--exclude=/proc', '--exclude=/sys', '--exclude=/dev',
             '--exclude=/tmp', '--exclude=/run', '--exclude=/mnt',
             '--exclude=/media', '--exclude=/lost+found',