Create stress test pipeline#3867

Draft

paulmedynski wants to merge 8 commits intomainfrom

dev/paul/stress-test-pipeline

Commits on Jan 6, 2026

- When triggered manually, we must choose one of the upstream pipelines to use for artifact download.
paulmedynski
committed
- Fixed pipeline alias value expansion.
paulmedynski
committed
- Fixed expansion of artifact download identifiers.
paulmedynski
committed