feat(miniapp): scaffold WeChat mini program MVP

miniapp/app.js

@@ -0,0 +1,16 @@
+const { getStoredSession, setApiBaseUrl } = require('./utils/api');
+const { API_BASE_URL } = require('./utils/config');
+
+App({
+  globalData: {
+    user: null,
+  },
+
+  onLaunch() {
+    setApiBaseUrl(API_BASE_URL);
+    const session = getStoredSession();
+    if (session?.user) {
+      this.globalData.user = session.user;
+    }
+  },
+});