fix(mp): handle mini-program launch params and pre-create share code for user page

App.vue: add handleLaunchParams() to read token/shareCode from onLaunch/onShow query in MP-WEIXIN context. user.vue: pre-create share record on page load, use dynamic path with shareCode in onShareAppMessage.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

zhiyin-app/src/App.vue

@@ -1,15 +1,24 @@
 <script setup lang="ts">
-import { onLaunch } from '@dcloudio/uni-app'
+import { onLaunch, onShow } from '@dcloudio/uni-app'
 
-onLaunch(() => {
+onLaunch((options) => {
   // #ifdef MP-WEIXIN
   initPrivacy()
+  handleLaunchParams(options?.query)
   // #endif
   // #ifdef H5
   handleH5UrlParams()
   // #endif
 })
 
+// #ifdef MP-WEIXIN
+onShow((options) => {
+  if (options?.query) {
+    handleLaunchParams(options.query)
+  }
+})
+// #endif
+
 // #ifdef H5
 function handleH5UrlParams() {
   const params = new URLSearchParams(window.location.search)
@@ -28,6 +37,18 @@ function handleH5UrlParams() {
 // #endif
 
 // #ifdef MP-WEIXIN
+function handleLaunchParams(query?: Record<string, string>) {
+  if (!query) return
+  const token = query.token
+  if (token) {
+    uni.setStorageSync('token', token)
+  }
+  const shareCode = query.share || query.shareCode
+  if (shareCode) {
+    uni.setStorageSync('shareCode', shareCode)
+  }
+}
+
 function initPrivacy() {
   if (wx.onNeedPrivacyAuthorization) {
     wx.onNeedPrivacyAuthorization((resolve) => {