chore(project): 初始化项目基础配置文件

- 添加 CodeGraph、Android 和通用 gitignore 配置
- 创建项目元数据文件跟踪 Flutter 项目属性
- 添加 Codex AI 指导文档 AGENTS.md 说明项目架构
- 配置代码分析选项 analysis_options.yaml
- 设置 Android 应用清单权限和 Kiosk 模式配置
- 实现中英文国际化支持 AppLocalizations
- 配置 GoRouter 应用路由导航
- 创建明亮工业控制风格的主题配置 AppTheme

lib/main.dart

@@ -0,0 +1,61 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+import 'core/router/app_router.dart';
+import 'core/theme/app_theme.dart';
+import 'core/localization/app_localizations.dart';
+import 'core/localization/locale_provider.dart';
+import 'core/database/database_service.dart';
+
+/// 应用入口
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  // Kiosk 模式：隐藏系统状态栏和导航栏
+  SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
+
+  // 固定横屏
+  SystemChrome.setPreferredOrientations([DeviceOrientation.landscapeLeft, DeviceOrientation.landscapeRight]);
+
+  final db = DatabaseService.instance;
+  await db.database;
+  await db.initTestData();
+  runApp(const ProviderScope(child: KuaishaiApp()));
+}
+
+/// 应用主体
+class KuaishaiApp extends ConsumerWidget {
+  const KuaishaiApp({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final router = ref.watch(goRouterProvider);
+    final locale = ref.watch(localeProvider);
+
+    return MaterialApp.router(
+      title: '污水毒品快检一体机',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.lightTheme(),
+      darkTheme: AppTheme.darkTheme(),
+      themeMode: ThemeMode.light,
+
+      // 国际化配置
+      localizationsDelegates: const [
+        AppLocalizations.delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+      ],
+      supportedLocales: const [
+        Locale('zh', 'CN'),
+        Locale('en', 'US'),
+      ],
+      locale: locale,
+
+      // 路由配置
+      routerConfig: router,
+    );
+  }
+}