feat(ui): 所有列表页加CSV导出按钮(全量拉取+中文BOM兼容Excel)

Co-Authored-By: Claude <noreply@anthropic.com>

yunkes/src/views/CustomerList.vue

@@ -2,12 +2,14 @@
 import { computed, onMounted, reactive, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { ElMessage } from 'element-plus'
+import { Download } from '@element-plus/icons-vue'
 import { getCustomers } from '@/api'
 import { downloadBlob } from '@/api/client'
 import type { Channel, Customer } from '@/api/types'
 import { useChannelStore } from '@/stores/channel'
 import { useOrgStore } from '@/stores/org'
 import { channelLabel, formatTime } from '@/utils/format'
+import { exportListToCsv } from '@/utils/csvExport'
 import { buildCustomerSections, fromTypeLabel, readField } from '@/utils/customerFields'
 
 /**
@@ -205,6 +207,45 @@ async function confirmExport(): Promise<void> {
   }
 }
 
+// ---- header 导出：当前 tab 渠道全量客户 CSV（含当前部门/员工筛选） ----
+const exporting = ref(false)
+
+async function exportCustomers(): Promise<void> {
+  const channel = activeTab.value // 'wechat' | 'whatsapp'
+  if (tabState[channel].total === 0) {
+    ElMessage.warning('当前列表为空，无数据可导出')
+    return
+  }
+  exporting.value = true
+  try {
+    const result = await exportListToCsv({
+      fetchPage: (page, pageSize) =>
+        getCustomers({
+          channel,
+          department_id: departmentId.value ?? undefined,
+          owner_account_id: ownerId.value ?? undefined,
+          page,
+          page_size: pageSize,
+        }),
+      columns: [
+        { key: 'friend_nickname', label: '客户昵称' },
+        { key: 'friend_id', label: '客户微信号' },
+        { key: 'friend_remark', label: '备注名' },
+        { key: 'real_name', label: '姓名' },
+        { key: 'phone', label: '手机号' },
+        { key: 'owner_account_id', label: '归属员工' },
+        { key: 'last_chat_time', label: '最近沟通时间', format: (r) => (r.last_chat_time ? formatTime(r.last_chat_time) : '') },
+      ],
+      filename: `${channel === 'wechat' ? '微信客户' : 'WA客户'}列表`,
+    })
+    ElMessage.success(`已导出 ${result.rows} 条`)
+  } catch (e) {
+    ElMessage.error(`导出失败：${(e as Error).message}`)
+  } finally {
+    exporting.value = false
+  }
+}
+
 /** 清除 owner_account_id query（保留其余 query）。 */
 function clearOwnerFilter(): void {
   const { owner_account_id: _drop, ...rest } = route.query
@@ -272,6 +313,9 @@ onMounted(() => {
         </span>
       </div>
       <div class="yk-customers__filters">
+        <el-button size="small" :loading="exporting" @click="exportCustomers">
+          <el-icon><Download /></el-icon> 导出
+        </el-button>
         <el-button
           v-if="departmentId"
           size="small"