chore: 初始化仓库基线（AGENTS.md、git 规范、敏感文件排除）

miniapp/src/app.tsx

@@ -0,0 +1,19 @@
+import React, { useEffect } from 'react';
+import { useDidShow, useDidHide } from '@tarojs/taro';
+import { useStore } from '@/store/useStore';
+import './app.scss';
+
+function App(props) {
+  const restoreSession = useStore((s) => s.restoreSession);
+
+  useEffect(() => {
+    restoreSession();
+  }, [restoreSession]);
+
+  useDidShow(() => {});
+  useDidHide(() => {});
+
+  return props.children;
+}
+
+export default App;