opt.: use cdn as default

lib/data/res/build_data.dart

@@ -2,9 +2,9 @@
 
 class BuildData {
   static const String name = "ServerBox";
-  static const int build = 793;
+  static const int build = 796;
   static const String engine = "3.19.2";
-  static const String buildAt = "2024-03-08 15:18:32";
-  static const int modifications = 2;
+  static const String buildAt = "2024-03-09 16:45:22";
+  static const int modifications = 1;
   static const int script = 40;
 }

lib/data/res/url.dart

@@ -1,5 +1,4 @@
 abstract final class Urls {
-  static const resBase = 'https://res.lolli.tech/serverbox';
   static const cdnBase = 'https://cdn.lolli.tech/serverbox';
   static const myGithub = 'https://github.com/lollipopkit';
   static const appHelp = '$myGithub/flutter_server_box#-help';

lib/data/service/app.dart

@@ -1,14 +1,11 @@
 import 'package:dio/dio.dart';
-import 'package:toolbox/data/res/store.dart';
 
 import '../model/app/update.dart';
 import '../res/url.dart';
 
 class AppService {
   Future<AppUpdate> getUpdate() async {
-    final useCDN = Stores.setting.useCdn.fetch() == 1;
-    final resp =
-        await Dio().get('${useCDN ? Urls.cdnBase : Urls.resBase}/update.json');
+    final resp = await Dio().get('${Urls.cdnBase}/update.json');
     return AppUpdate.fromJson(resp.data);
   }
 }

lib/data/store/setting.dart

@@ -251,11 +251,6 @@ class SettingStore extends PersistentStore {
   /// when building traffic view on server tab
   late final ignoreLocalNet = property('ignoreLocalNetIface', true);
 
-  /// Use cdn
-  /// It's recommended to use cdn for non-China users
-  /// 0: unset, 1: use, 2: not use
-  late final useCdn = property('useCdn', 0);
-
   /// Index of terminal cursor type
   late final termCursor =
       property('termCursor', TerminalCursorType.block.index);