报警列表，无数据时添加无图片状态

src/views/equipmentAlarmRecord/index.vue

@@ -62,7 +62,7 @@
 
     <el-card shadow="never">
       <div v-if="isListView" key="card">
-        <el-row :gutter="20">
+        <el-row :gutter="20" v-if="alarmList.length > 0">
           <el-col :span="6" v-for="(item, index) in alarmList" :key="index">
             <el-card class="custom-alarm-card">
               <div class="card-header">
@@ -113,6 +113,14 @@
             </el-card>
           </el-col>
         </el-row>
+        <el-row :gutter="20" v-else>
+          <!-- 使用flex容器实现垂直居中布局 -->
+          <div
+            style="display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; width: 100%;">
+            <img src="@/assets/images/noData.png" alt="暂无数据" style="max-width: 150px; margin-bottom: 16px;">
+            <div style="color: #999; font-size: 14px;">暂无数据</div>
+          </div>
+        </el-row>
       </div>
       <div v-else key="list">
         <el-table v-loading="loading" border :data="alarmList">

src/views/equipmentManagement/devices/index.vue

@@ -56,7 +56,7 @@
             </el-col>
 
             <el-col :span="1.5">
-              <el-button v-hasPermi="['equipment:devices:export']" type="warning" :disabled="multiple" plain
+              <el-button v-hasPermi="['equipment:devices:export']" type="warning"  plain
                 icon="Download" @click="handleExport">导出</el-button>
             </el-col>
             <el-col :span="1.5">