Add native Linux controls and tray menu for BTD 700

install.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+"""Install a launcher for this checkout, without root or system packages."""
+from pathlib import Path
+import os
+from btd700.integration import APP_ID, desktop_entry
+
+base = Path(os.environ.get('XDG_DATA_HOME', Path.home() / '.local/share'))
+applications = base / 'applications'
+applications.mkdir(parents=True, exist_ok=True)
+destination = applications / f'{APP_ID}.desktop'
+destination.write_text(desktop_entry())
+print(f'Installiert: {destination}')
+print('Im Anwendungsmenü „BTD 700 Control“ öffnen. Der Projektordner muss erhalten bleiben.')