v0.9.3 [Issue 14]未探测到字符集时显示的中文字符“未知”改成“Unknown”。
解决“不过滤”模式下，探测字符集报错“UCNV出错”导致无法添加文件的问题。
v0.9.3 [Issue 14]Change the Chinese character "未知" to "Unknown" when the charset is not detected.
Fix the issue where error characters during charset detection in "no filtering" mode cause an "UCNV error," preventing files from being added.