添加 HTML 资源路径到 pubspec.yaml；更新 Auth 页面以使用新的 Webview 组件加载本地 HTML 文件；重构 WebviewPage 以支持加载本地资产和注入 JavaScript 通信桥接；清理不必要的导入和注释。

lib/gen/assets.gen.dart

@@ -11,6 +11,16 @@
 
 import 'package:flutter/widgets.dart';
 
+class $AssetsHtmlGen {
+  const $AssetsHtmlGen();
+
+  /// File path: assets/html/index.html
+  String get index => 'assets/html/index.html';
+
+  /// List of all assets
+  List<String> get values => [index];
+}
+
 class $AssetsImagesGen {
   const $AssetsImagesGen();
 
@@ -30,18 +40,24 @@ class $AssetsImagesGen {
   AssetGenImage get imageLogo =>
       const AssetGenImage('assets/images/image_logo.png');
 
+  /// File path: assets/images/image_vs.png
+  AssetGenImage get imageVs =>
+      const AssetGenImage('assets/images/image_vs.png');
+
   /// List of all assets
   List<AssetGenImage> get values => [
     imageCopy,
     imageDelete,
     imageDialogBg,
     imageLogo,
+    imageVs,
   ];
 }
 
 class Assets {
   const Assets._();
 
+  static const $AssetsHtmlGen html = $AssetsHtmlGen();
   static const $AssetsImagesGen images = $AssetsImagesGen();
 }