迁移 Flutter 端与训练脚本，模型/训练产物移出 git（遵循纯代码约定）

flutter_app/lib/main.dart

@@ -0,0 +1,27 @@
+import 'package:fluwx/fluwx.dart' as fluwx;
+import 'package:flutter/material.dart';
+import 'package:tobias/tobias.dart' as tobias;
+
+import 'app.dart';
+import 'config/app_config.dart';
+import 'container.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  // 注册微信/支付宝 SDK（AppID 占位，接入真实商户后替换 app_config.dart）
+  try {
+    await fluwx.Fluwx().registerApi(
+      appId: AppConfig.wechatAppId,
+      universalLink: AppConfig.wechatUniversalLink,
+    );
+  } catch (_) {}
+  try {
+    await tobias.Tobias().registerApp(
+      AppConfig.alipayAppId,
+      universalLink: AppConfig.alipayUniversalLink,
+    );
+  } catch (_) {}
+
+  runApp(ObserverApp(container: AppContainer()));
+}