GitHub Issue #159: Require all assay transform scripts to reside in container's @scripts dir - #1048

ref 'refs/heads/fb_assayTransform159' not found in this repository - https://docs.github.com/rest

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/