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/dimension/dimension.vue

@@ -44,6 +44,8 @@
 </template>
 
 <script setup>
+import { onShareAppMessage, onShareTimeline } from '@dcloudio/uni-app'
+
 import { ref, computed, onMounted } from 'vue'
 import { getDimension } from '@/utils/dimensions'
 import { knowledgeApi } from '@/utils/api'
@@ -80,12 +82,12 @@ async function loadKnowledge() {
   loading.value = true
   try {
     const data = await knowledgeApi.list({ dim: dimId.value })
-    knowledgeList.value = data.map(item => ({
+    knowledgeList.value = (data.items || []).map(item => ({
       ...item,
       icon: getDimIcon(item.dim),
       desc: item.content?.substring(0, 40) + '...' || '',
       readTime: Math.ceil((item.content?.length || 300) / 200),
-      isPremium: item.isPremium,
+      isPremium: false,
       collected: false,
       collectCount: item.collectionCount
     }))
@@ -166,10 +168,12 @@ function goDetail(item) {
 }
 
 // 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>