feat(flutter): 应用浅色暖橙视觉主题

lib/app.dart

@@ -251,14 +251,14 @@ class _LumaDramaAppState extends State<LumaDramaApp> {
         localeResolutionCallback: (deviceLocale, _) =>
             resolveAppLocale(deviceLocale),
         debugShowCheckedModeBanner: false,
-        themeMode: ThemeMode.dark,
+        themeMode: ThemeMode.light,
         theme: AppTheme.light(),
-        darkTheme: AppTheme.dark(),
+        darkTheme: AppTheme.light(),
         builder: (context, child) => AnnotatedRegion<SystemUiOverlayStyle>(
-          value: SystemUiOverlayStyle.light.copyWith(
+          value: SystemUiOverlayStyle.dark.copyWith(
             statusBarColor: Colors.transparent,
             systemNavigationBarColor: AppColors.bar,
-            systemNavigationBarIconBrightness: Brightness.light,
+            systemNavigationBarIconBrightness: Brightness.dark,
           ),
           child: child ?? const SizedBox.shrink(),
         ),