fix: privacy policy compliance - checkbox must be manually checked, add WeChat privacy API

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

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

zhiyin-app/src/App.vue

@@ -1,7 +1,34 @@
 <script setup lang="ts">
 import { onLaunch, onShow, onHide } from '@dcloudio/uni-app'
 
-onLaunch(() => { console.log('职引 App launched') })
+onLaunch(() => {
+  console.log('职引 App launched')
+  // #ifdef MP-WEIXIN
+  initPrivacy()
+  // #endif
+})
+
+// #ifdef MP-WEIXIN
+function initPrivacy() {
+  if (wx.onNeedPrivacyAuthorization) {
+    wx.onNeedPrivacyAuthorization((resolve) => {
+      uni.showModal({
+        title: '隐私政策授权',
+        content: '请仔细阅读并同意《用户服务协议》和《隐私政策》后再使用本应用。您的个人信息将仅用于求职服务。',
+        confirmText: '同意',
+        cancelText: '拒绝',
+        success: (res) => {
+          if (res.confirm) {
+            resolve({ event: 'agree' })
+          } else {
+            resolve({ event: 'disagree' })
+          }
+        },
+      })
+    })
+  }
+}
+// #endif
 onShow(() => { console.log('职引 App shown') })
 onHide(() => { console.log('职引 App hidden') })
 </script>