Template: auth 0.2.0 + ui 0.7.0 — basicbar_auth.urls, whoami_payload, Discovery-Fail-fast - #17

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/