fix: 改进成功消息等待策略，修复测试失败问题

- 添加waitForSuccessMessage()方法到UserManagementPage和RoleManagementPage
- 改进submitForm()方法，添加等待时间
- 更新测试用例使用新的等待方法
- 增加错误消息检测和日志输出
- 修复权限选择器问题（使用.el-tree替代固定value）

novalon-manage-web/src/views/audit/OperationLog.vue

@@ -22,6 +22,13 @@
             >
               搜索
             </el-button>
+            <el-button
+              type="success"
+              @click="handleExport"
+            >
+              <el-icon><Download /></el-icon>
+              导出
+            </el-button>
           </div>
         </div>
       </template>
@@ -177,6 +184,41 @@ const handleSearch = () => {
   fetchData()
 }
 
+const handleExport = async () => {
+  try {
+    loading.value = true
+    const params = new URLSearchParams()
+    if (searchKeyword.value) {
+      params.append('keyword', searchKeyword.value)
+    }
+    
+    const response = await fetch(`/api/logs/operation/export?${params.toString()}`, {
+      method: 'GET',
+      headers: {
+        'Accept': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+      }
+    })
+    
+    if (!response.ok) {
+      throw new Error('导出失败')
+    }
+    
+    const blob = await response.blob()
+    const url = window.URL.createObjectURL(blob)
+    const link = document.createElement('a')
+    link.href = url
+    link.download = `operation_logs_${new Date().toISOString().slice(0, 19).replace(/[:-]/g, '')}.xlsx`
+    document.body.appendChild(link)
+    link.click()
+    document.body.removeChild(link)
+    window.URL.revokeObjectURL(url)
+  } catch (error) {
+    console.error('导出失败:', error)
+  } finally {
+    loading.value = false
+  }
+}
+
 const handleSortChange = ({ prop, order }: any) => {
   sortInfo.sort = prop
   sortInfo.order = order === 'ascending' ? 'asc' : 'desc'