Fix PyInstaller frozen binary AttributeError for missing log method

- Fixed AttributeError: 'AutoInstallerGUI' object has no attribute 'log'
- Replaced self.log() call with print() in detect_default_disk method
- The log method is only available in InstallerWorker class, not AutoInstallerGUI
- This resolves the crash when running frozen PyInstaller binary
- Maintains logging functionality for disk detection without breaking frozen binary

This fixes the PyInstaller frozen binary crash that occurred during GUI initialization
when trying to auto-detect the default installation disk.

autoinstaller_gui/autoinstallergui.py

@@ -1003,7 +1003,7 @@ class AutoInstallerGUI(QMainWindow):
                     if size_gb >= 4:
                         # Set as default disk
                         self.selected_disk = disk
-                        self.log(f"Auto-selected installation disk: {disk} ({size_gb} GB)")
+                        print(f"Auto-selected installation disk: {disk} ({size_gb} GB)")
                         break
                 except (subprocess.CalledProcessError, ValueError, IndexError):
                     continue