v0.3.20

新增 New

• 菜单栏 App 新增"一键更新"：发现新版本后点击"立即更新"，App 会自动下载并校验官方签名公证的安装包，退出后自动替换为新版并重新启动，不用再手动下载 DMG 拖拽安装。
• Added one-click update to the menu bar app: when a new version is found, click "Update Now" and the app will automatically download and verify the officially signed & notarized installer, then quit, replace itself, and relaunch — no more manual DMG download and drag-install.