WIP: markdown reader, data migration, 编辑器增强等

lib/main.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
 import 'dart:async';
 import 'pages/home_page.dart';
@@ -65,6 +66,15 @@ class MyApp extends StatelessWidget {
         theme: AppTheme.lightTheme,
         darkTheme: AppTheme.darkTheme,
         themeMode: ThemeMode.system,
+        localizationsDelegates: [
+          GlobalMaterialLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+        ],
+        supportedLocales: const [
+          Locale('zh', 'CN'),
+          Locale('en', 'US'),
+        ],
         home: const HomePage(),
         onGenerateRoute: AppRouter.generateRoute,
         builder: (context, child) {