Refactor Disk and Memory Size Formatting with Centralized Utility Function

- Extracted common size formatting logic to a new utility function `HumanSize` in utils package
- Removed duplicate size formatting code from Disk and Memory configurations
- Updated Disk and Memory modules to use the centralized size formatting utility
- Uncommented and implemented disk usage calculation in Disk configuration
- Improved code readability and maintainability by centralizing size conversion logic

agent-wdd/utils/DownloadUtils.go

@@ -46,6 +46,9 @@ func downloadWithProgress(client *http.Client, url, dest string) (bool, string)
 	size := resp.ContentLength
 	var downloaded int64
 
+	// 打印下载信息
+	fmt.Printf("开始下载文件: %s 文件大小: %s\n", url, HumanSizeInt(size))
+
 	// 创建带进度跟踪的Reader
 	progressReader := &progressReader{
 		Reader: resp.Body,