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/core/database/connection/database_connection.dart

@@ -2,7 +2,7 @@ import 'dart:io';
 
 import 'package:drift/drift.dart';
 import 'package:drift/native.dart';
-import 'package:hiddify/core/directories/directories_provider.dart';
+import 'package:umbrix/core/directories/directories_provider.dart';
 import 'package:path/path.dart' as p;
 
 LazyDatabase openConnection() {