新增静态演示界面

lib/app/app.dart

@@ -1,16 +1,37 @@
-// import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
+import 'package:patbond_flutter/core/theme/app_theme.dart';
 import 'package:patbond_flutter/features/main/main_shell_page.dart';
+import 'package:patbond_flutter/state/app_state.dart';
 
-class App extends StatelessWidget{
+class App extends StatefulWidget {
   const App({super.key});
 
+  @override
+  State<App> createState() => _AppState();
+}
+
+class _AppState extends State<App> {
+  late final AppState appState;
+
+  @override
+  void initState() {
+    super.initState();
+    appState = AppState()..load();
+  }
+
+  @override
+  void dispose() {
+    appState.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Patbond',
       debugShowCheckedModeBanner: false,
-      home: const MainShellPage(),
+      theme: buildAppTheme(),
+      home: MainShellPage(appState: appState),
     );
   }
 }