Enhance installation and uninstallation scripts with user-friendly messages, add polkit and sudoers configuration for service management, and improve service restart handling in API endpoints.

repeater/web/api_endpoints.py

@@ -491,8 +491,8 @@ class APIEndpoints:
                 import time
                 time.sleep(2)  # Give time for response to be sent
                 try:
-                    # Use systemctl without sudo - polkit rules allow the repeater user to restart the service
-                    subprocess.run(['systemctl', 'restart', 'pymc-repeater'], check=False)
+                    from repeater.service_utils import restart_service
+                    restart_service()
                 except Exception as e:
                     logger.error(f"Failed to restart service: {e}")