Hello,

I am currently working on emitting an event to signify when JupyterLab has reached a fully functional state after page load. For this purpose, I am defining "fully functional" as the moment when the last opened resource (such as a notebook, markdown file, text file, etc.) is completely loaded.

Q1:
Is there an existing event or signal that is triggered when any resource-type file is loaded during JupyterLab's page load? If not, how can I emit such a signal?

Q2:
Additionally, is there a better approach to determine when JupyterLab has reached a fully functional state?

I would appreciate your guidance on these questions.
Thank you!