pgw#1002/#1003/#1004/#1005: a publish failure costs the UPLOAD, not the CAST (th#1653 client half) - #529

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, astral-sh/setup-uv@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/