If ["notebook"] is set to None then user_notebook gets parsed and templated by CLI arguments, then the "notebook" key is set to this string and the rest continues as normal.
How Has This Been Tested?
Add in tests
Deploy and test with REMI CALLAB data on max-exfl17 with mymdc test instance
Manual test setup involved adding a notebook to /gpfs/exfel/exp/CALLAB/202130/p900203/usr/calibration/notebooks/correct.ipynb (this matches the REMI user notebook path pattern), then running xfel-calibrate REMI CORRECT --instrument CALLAB --cycle 202130 --proposal 900203.
This will then execute the test notebook.
The test notebook does... nothing really, it just creates an empty file called touch in the in_folder directory. If the SLURM job finishes without errors, the PDF renders correctly, and the touch file is present, then the user notebook with a user venv executed correctly.
