feat(ui): 设置页拆分 LAN/Named/Quick 三区块，二维码与启停按实际运行通道显示（重做 #97 纯 UI 版） - #138

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/