Add --no-fullscreen command line option to AutoInstaller GUI

- Added argparse to main() function for command line argument parsing
- Added --no-fullscreen flag to run GUI in windowed mode instead of fullscreen
- Useful for testing and development on systems without fullscreen support
- Maintains fullscreen as default behavior for production use
- Allows flexible deployment scenarios (fullscreen for live USB, windowed for testing)

autoinstaller_gui/autoinstallergui.py

@@ -763,9 +763,21 @@ class AutoInstallerGUI(QMainWindow):
         subprocess.run(["reboot"])
 
 def main():
+    import argparse
+
+    parser = argparse.ArgumentParser(description='MBetter AutoInstaller GUI')
+    parser.add_argument('--no-fullscreen', action='store_true',
+                       help='Run in windowed mode instead of fullscreen')
+    args = parser.parse_args()
+
     app = QApplication(sys.argv)
     window = AutoInstallerGUI()
+
+    if not args.no_fullscreen:
+        window.showFullScreen()
+    else:
         window.show()
+
     sys.exit(app.exec())
 
 if __name__ == "__main__":