feat: mobile-like window size and always-visible stats

- Changed window size to mobile phone format (400x800)
- Removed width condition for ActiveProxyFooter - now always visible
- Added run-umbrix.sh launch script with icon copying
- Stats cards now display on all screen sizes

lib/features/deep_link/notifier/deep_link_notifier.dart

@@ -1,6 +1,6 @@
 import 'dart:io';
 
-import 'package:hiddify/utils/utils.dart';
+import 'package:umbrix/utils/utils.dart';
 import 'package:protocol_handler/protocol_handler.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';