rebase

I can't review changes because of a problem trying to checkout main.

I am trying this as a solution.}

(.venv) PS D:\bluesky_dev\review_bluesk_nexus\bluesky_nexus> git fetch origin
(.venv) PS D:\bluesky_dev\review_bluesk_nexus\bluesky_nexus> git checkout -b '4745_feature' 'origin/4745_feature'
error: invalid path 'src/bluesky_nexus/aux/callbacks.py'
error: invalid path 'src/bluesky_nexus/aux/descriptor_and_event.py'