Add mock mode support and input validation

iridium_installer/main.py

@@ -1,3 +1,4 @@
+import argparse
 import sys
 
 import gi
@@ -11,21 +12,30 @@ from .ui.window import InstallerWindow
 
 
 class IridiumInstallerApp(Adw.Application):
-    def __init__(self):
+    def __init__(self, mock_mode=False):
         super().__init__(
             application_id="org.iridium.Installer",
             flags=Gio.ApplicationFlags.FLAGS_NONE,
         )
+        self.mock_mode = mock_mode
 
     def do_activate(self):
         win = self.props.active_window
         if not win:
-            win = InstallerWindow(application=self)
+            win = InstallerWindow(application=self, mock_mode=self.mock_mode)
         win.present()
 
 
 def main():
-    app = IridiumInstallerApp()
+    parser = argparse.ArgumentParser(description="Iridium OS Installer")
+    parser.add_argument(
+        "--mock",
+        action="store_true",
+        help="Run in mock mode (no actual changes to disk)",
+    )
+    args = parser.parse_args()
+
+    app = IridiumInstallerApp(mock_mode=args.mock)
     return app.run(sys.argv)