A lightweight macOS selection translator built with pure Swift 6, featuring on-device Apple Translate for privacy, only 5MB install size and stable ~50MB memory usage. 一款轻量级 macOS 划词翻译工具，纯 Swift 6 开发，设备端 Apple 翻译保护隐私，安装体积仅 5MB，后台运行内存稳定约 50MB