feat: 添加应用品牌信息支持，重构主页 URL 生成逻辑

lib/config/app_config.dart

@@ -4,6 +4,8 @@ enum Environment {
 
 class AppConfig {
   static const Environment currentEnvironment = Environment.production;
+  static const String appName = '本地打包';
+  static const String appLogo = '';
 
   static final Map<Environment, List<String>> _environmentHosts = {
     Environment.production: [
@@ -15,11 +17,15 @@ class AppConfig {
     return _environmentHosts[currentEnvironment] ?? const [];
   }
 
-  static String get homeUrl {
+  static String homeUrl({String? appName, String? appLogo}) {
     final host = environmentHosts.isNotEmpty
         ? environmentHosts.first
         : 'h5-im.imharry.work';
-    return _normalizeHomeUrl(host);
+    return _withShellBranding(
+      _normalizeHomeUrl(host),
+      appName: appName,
+      appLogo: appLogo,
+    );
   }
 
   static String _normalizeHomeUrl(String host) {
@@ -29,4 +35,26 @@ class AppConfig {
     }
     return 'https://$value/';
   }
+
+  static String _withShellBranding(
+    String url, {
+    String? appName,
+    String? appLogo,
+  }) {
+    final uri = Uri.parse(url);
+    final queryParameters = Map<String, String>.from(uri.queryParameters)
+      ..['flutter_shell'] = '1';
+
+    final trimmedName = (appName ?? AppConfig.appName).trim();
+    if (trimmedName.isNotEmpty) {
+      queryParameters['shell_app_name'] = trimmedName;
+    }
+
+    final trimmedLogo = (appLogo ?? AppConfig.appLogo).trim();
+    if (trimmedLogo.isNotEmpty) {
+      queryParameters['shell_app_logo'] = trimmedLogo;
+    }
+
+    return uri.replace(queryParameters: queryParameters).toString();
+  }
 }

lib/main.dart

@@ -10,11 +10,12 @@ import 'package:webview_flutter_wkwebview/webview_flutter_wkwebview.dart';
 
 import 'config/app_config.dart';
 
-final _homeUrl = AppConfig.homeUrl;
 const _shellBackground = Color(0xFFF8FBFF);
 const _shellAccent = Color(0xFF0089FF);
 const _shellSubText = Color(0xFF8E9AB0);
 const _resumeCoverDuration = Duration(milliseconds: 700);
+const _shellBrandingChannel =
+    MethodChannel('io.openim.flutter.im_webview_app/shell_branding');
 const _stopWebMediaScript = r'''
 (() => {
   try {
@@ -29,7 +30,7 @@ const _stopWebMediaScript = r'''
 })();
 ''';
 
-void main() {
+Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   SystemChrome.setSystemUIOverlayStyle(
     const SystemUiOverlayStyle(
@@ -39,29 +40,70 @@ void main() {
       systemNavigationBarIconBrightness: Brightness.dark,
     ),
   );
-  runApp(const ImWebViewApp());
+  final shellBranding = await ShellBranding.load();
+  runApp(ImWebViewApp(shellBranding: shellBranding));
+}
+
+class ShellBranding {
+  const ShellBranding({
+    required this.appName,
+    required this.appLogo,
+  });
+
+  static const fallback = ShellBranding(
+    appName: AppConfig.appName,
+    appLogo: AppConfig.appLogo,
+  );
+
+  final String appName;
+  final String appLogo;
+
+  static Future<ShellBranding> load() async {
+    try {
+      final data = await _shellBrandingChannel
+          .invokeMapMethod<String, String>('getShellBranding');
+      final appName = _trim(data?['appName']);
+      final appLogo = _trim(data?['appLogo']);
+
+      return ShellBranding(
+        appName: appName.isNotEmpty ? appName : fallback.appName,
+        appLogo: appLogo.isNotEmpty ? appLogo : fallback.appLogo,
+      );
+    } catch (_) {
+      return fallback;
+    }
+  }
+
+  static String _trim(String? value) => value?.trim() ?? '';
 }
 
 class ImWebViewApp extends StatelessWidget {
-  const ImWebViewApp({super.key});
+  const ImWebViewApp({
+    super.key,
+    this.shellBranding = ShellBranding.fallback,
+  });
+
+  final ShellBranding shellBranding;
 
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: '集中营',
+      title: shellBranding.appName,
       debugShowCheckedModeBanner: false,
       theme: ThemeData(
         colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF1F6FEB)),
         scaffoldBackgroundColor: _shellBackground,
         useMaterial3: true,
       ),
-      home: const H5ShellPage(),
+      home: H5ShellPage(shellBranding: shellBranding),
     );
   }
 }
 
 class H5ShellPage extends StatefulWidget {
-  const H5ShellPage({super.key});
+  const H5ShellPage({super.key, required this.shellBranding});
+
+  final ShellBranding shellBranding;
 
   @override
   State<H5ShellPage> createState() => _H5ShellPageState();
@@ -69,6 +111,7 @@ class H5ShellPage extends StatefulWidget {
 
 class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
   late final WebViewController _controller;
+  late final String _homeUrl;
 
   int _progress = 0;
   String? _loadError;
@@ -79,6 +122,10 @@ class _H5ShellPageState extends State<H5ShellPage> with WidgetsBindingObserver {
   void initState() {
     super.initState();
     WidgetsBinding.instance.addObserver(this);
+    _homeUrl = AppConfig.homeUrl(
+      appName: widget.shellBranding.appName,
+      appLogo: widget.shellBranding.appLogo,
+    );
     _controller = _buildController()..loadRequest(Uri.parse(_homeUrl));
   }