feat: 微信分享钩子全页面接入 + 订阅信息结构化映射 + JWT 错误处理加强

- client: 全部页面接入 onShareAppMessage/onShareTimeline 分享钩子
- client: login 页增强、profile 订阅展示优化
- client/stores: 订阅字段扁平结构映射为 subInfo（plan/expiresAt/startDate）
- server: auth 路由 JWT 无效/过期统一返回 401 未授权响应
- server: models/tests 同步更新

client/src/pages/search/search.vue

@@ -64,8 +64,8 @@
         <text class="result-title">{{ item.title }}</text>
 
         <!-- 摘要 -->
-        <text class="result-summary" v-if="item.summary">
-          {{ item.summary }}
+        <text class="result-summary" v-if="item.content">
+          {{ item.content }}
         </text>
 
         <!-- 标签与分类 -->
@@ -85,6 +85,8 @@
 </template>
 
 <script setup>
+import { onShareAppMessage, onShareTimeline } from '@dcloudio/uni-app'
+
 import { ref, computed, onMounted, onUnmounted } from 'vue'
 import { knowledgeApi } from '@/utils/api'
 import { DIMENSIONS } from '@/utils/dimensions'
@@ -188,10 +190,12 @@ onUnmounted(() => {
 })
 
 // 微信小程序分享
+// #ifdef MP-WEIXIN
 onShareAppMessage(() => ({
   title: 'AI 维度 - 你的AI知识助手',
   path: '/pages/index/index'
 }))
+// #endif
 </script>
 
 <style lang="scss" scoped>