When you have more pages, you will want to display the list of pages categorized in subdirectories in the sidebar as well, categorized in the same way.
MVP: What is the minimum solution that will solve 80% of the problem?
I couldn’t figure out how to make it with a custom component, so I forked the streamlit body and made a modified implementation.
If there is demand, I will try to create a pull-request.
I have not added test code yet.
It would be helpful if you could tell me what I should pay attention to before creating a pull-request.