* Elected to go with simple text animation progress symbol for the moment

* Unified around one folder browser approach
* Added cancellation functionality

src/main.py

@@ -9,27 +9,7 @@ try:
     from .gui.main_window import main
 except ImportError:
     # Fall back to direct import (when run directly)
-    try:
-        from gui.main_window import main
-    except ImportError:
-        from gui import AndroidFileHandlerGUI
-        import sys
-
-        def main():
-            """Main function to run the application."""
-            if sys.platform not in ["win32", "linux"]:
-                import tkinter as tk
-                from tkinter import messagebox
-
-                root = tk.Tk()
-                root.withdraw()
-                messagebox.showerror(
-                    "Unsupported OS", "This application only supports Windows or Linux."
-                )
-                sys.exit(1)
-
-            app = AndroidFileHandlerGUI()
-            app.mainloop()
+    from gui.main_window import main
 
 
 if __name__ == "__main__":