feat: 管理后台完整可用 + 注册登录记日志 + 提取信息结构化展示 + 微信配置就绪

- 管理后台用户/统计/日志/配置四页签全部对接真实后端API
- auth注册/登录/游客/微信登录事件写入usage_logs表
- 提取信息结果从原始JSON改为卡片式字段列表（中文标签）
- 管理后台搜索按钮增加加载态和结果数提示
- 配置WECHAT_APP_ID/WECHAT_APP_SECRET
- 客户/产品/报价单CRUD页面完整（导出导入批量操作）

uni-app/src/utils/api.js

@@ -98,8 +98,28 @@ export const quotationApi = {
   updateStatus: (id, status) => request(`/quotations/${id}/status`, 'PATCH', { status }),
   exportPdf: (id) => `${BASE_URL}/quotations/${id}/pdf`,
   exportCsv: () => `${BASE_URL}/quotations/export/csv`,
+  exportXlsx: () => `${BASE_URL}/quotations/export/xlsx`,
   generateFromInquiry: (inquiryText, customerId = null) =>
     request('/quotations/generate-from-inquiry', 'POST', { inquiry_text: inquiryText, customer_id: customerId }),
+  importQuotations: (file) => {
+    return new Promise((resolve, reject) => {
+      const token = uni.getStorageSync('token')
+      uni.uploadFile({
+        url: `${BASE_URL}/quotations/import`,
+        filePath: file,
+        name: 'file',
+        header: token ? { Authorization: `Bearer ${token}` } : {},
+        success: (res) => {
+          try {
+            resolve(JSON.parse(res.data))
+          } catch (e) {
+            resolve(res.data)
+          }
+        },
+        fail: reject,
+      })
+    })
+  },
 }
 
 export const productApi = {
@@ -108,6 +128,27 @@ export const productApi = {
   create: (data) => request('/products', 'POST', data),
   update: (id, data) => request(`/products/${id}`, 'PATCH', data),
   delete: (id) => request(`/products/${id}`, 'DELETE'),
+  exportCsv: () => `${BASE_URL}/products/export/csv`,
+  exportXlsx: () => `${BASE_URL}/products/export/xlsx`,
+  importProducts: (file) => {
+    return new Promise((resolve, reject) => {
+      const token = uni.getStorageSync('token')
+      uni.uploadFile({
+        url: `${BASE_URL}/products/import`,
+        filePath: file,
+        name: 'file',
+        header: token ? { Authorization: `Bearer ${token}` } : {},
+        success: (res) => {
+          try {
+            resolve(JSON.parse(res.data))
+          } catch (e) {
+            resolve(res.data)
+          }
+        },
+        fail: reject,
+      })
+    })
+  },
 }
 
 export const adminApi = {
@@ -261,6 +302,7 @@ export const customerApi = {
   getConversation: (id, page = 1, size = 50) =>
     request(`/customers/${id}/conversation?page=${page}&size=${size}`),
   exportCsv: () => `${BASE_URL}/customers/export/csv`,
+  exportXlsx: () => `${BASE_URL}/customers/export/xlsx`,
   importCustomers: (file) => {
     return new Promise((resolve, reject) => {
       const token = uni.getStorageSync('token')