鸿蒙 白屏问题

lib/core/layout/app_shell.dart

@@ -6,19 +6,17 @@
 // 上次更新: 鸿蒙白屏调试 — 恢复GlassBottomBar+CupertinoTabBar鸿蒙降级方案
 // ============================================================
 
-import 'dart:io';
-
 import 'package:badges/badges.dart' as badges;
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:xianyan/core/utils/platform_utils.dart' as pu;
 import 'package:go_router/go_router.dart';
 import 'package:liquid_glass_widgets/liquid_glass_widgets.dart';
 
 import '../theme/app_theme.dart';
 import '../utils/interaction_animations.dart';
-import '../utils/logger.dart';
 import '../../features/inspiration/providers/chat_provider.dart';
 import '../../features/settings/providers/theme_settings_provider.dart';
 import '../../shared/widgets/tab_icon_sprite.dart';
@@ -28,13 +26,7 @@ class AppShell extends ConsumerWidget {
 
   final StatefulNavigationShell child;
 
-  static bool get _isOhos {
-    try {
-      return Platform.operatingSystem == 'ohos';
-    } catch (_) {
-      return false;
-    }
-  }
+  static bool get _isOhos => pu.isOhos;
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
@@ -167,13 +159,19 @@ class AppShell extends ConsumerWidget {
 
     return CelebrationOverlay(
       child: AnnotatedRegion<SystemUiOverlayStyle>(
-        value: const SystemUiOverlayStyle(
-          statusBarColor: Colors.black,
-          statusBarIconBrightness: Brightness.light,
-          statusBarBrightness: Brightness.dark,
-          systemNavigationBarColor: Colors.black,
-          systemNavigationBarIconBrightness: Brightness.light,
-          systemNavigationBarDividerColor: Colors.black,
+        value: SystemUiOverlayStyle(
+          statusBarColor: Colors.transparent,
+          statusBarIconBrightness: ext.isDark
+              ? Brightness.light
+              : Brightness.dark,
+          statusBarBrightness: ext.isDark
+              ? Brightness.dark
+              : Brightness.light,
+          systemNavigationBarColor: Colors.transparent,
+          systemNavigationBarIconBrightness: ext.isDark
+              ? Brightness.light
+              : Brightness.dark,
+          systemNavigationBarDividerColor: Colors.transparent,
         ),
         child: PopScope(
           canPop: false,