Merge pull request '[🚀] 64KB' (#7) from dev into main

Reviewed-on: #7

tool/helper.go

@@ -34,7 +34,7 @@ func GetOrderNumber() string {
 // ByteFmt 格式化显示文件大小
 func ByteFmt(size int64) string {
 	var unitArr = []string{"B", "KB", "MB", "GB", "TB", "EB"}
-	if size == 0 {
+	if size <= 0 {
 		return "unknown"
 	}
 	fs := float64(size)