Organize files in a specified macOS folder into a "分类结果" directory with subfolders 表格/代码/视频/图片/文档/压缩包/安装包/演示文稿/其他 based on file extensions. Unclassified files are moved to "其他" folder by default. Default non-recursive. Always run a dry-run preview first, then apply only after user confirmation. Create missing folders, avoid overwriting by suffixing, write a CSV log, and support undo. Use when the user asks to 整理/归档/分类整理 a folder like Downloads/Desktop.