feat(导航): 替换数据分析为资产盘点并优化备份下载

将导航栏中的数据分析功能替换为资产盘点，并更新相关路由和描述
优化备份文件下载功能，使用blob方式下载并添加错误处理

frontend/src/components/dashboard/NavigationGrid.jsx

@@ -4,12 +4,12 @@ import {
   CloudServerOutlined,
   DatabaseOutlined,
   WarningOutlined,
-  BarChartOutlined,
   AppstoreOutlined,
   SettingOutlined,
   ApartmentOutlined,
   LinkOutlined,
   ArrowRightOutlined,
+  AuditOutlined,
 } from '@ant-design/icons';
 import { designTokens } from '../../config/theme';
 
@@ -39,12 +39,12 @@ const NAV_BUTTONS_DATA = [
     description: '工单和故障处理',
   },
   {
-    key: 'analytics',
-    icon: BarChartOutlined,
-    text: '数据分析',
-    path: '/',
+    key: 'inventory',
+    icon: AuditOutlined,
+    text: '资产盘点',
+    path: '/inventory',
     color: '#13c2c2',
-    description: '数据统计和分析',
+    description: '资产库存和盘点管理',
   },
   {
     key: 'consumables',

frontend/src/pages/BackupManagement.jsx

@@ -190,8 +190,22 @@ const BackupManagement = () => {
     }
   };
 
-  const handleDownload = filename => {
-    window.open(`/api/backup/download/${filename}`, '_blank');
+  const handleDownload = async filename => {
+    try {
+      const blob = await backupAPI.download(filename);
+      // 创建临时链接并触发下载
+      const url = window.URL.createObjectURL(blob);
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = filename;
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      window.URL.revokeObjectURL(url);
+      message.success('备份文件下载已开始');
+    } catch (error) {
+      message.error('下载失败: ' + (error.message || '未知错误'));
+    }
   };
 
   const handleValidate = async filename => {