ci: 支持 macOS 构建——链接参数跨平台 + KVSPACE_LIB_DIR - #322

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. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/