Use case or problem
Related to Zettelksaten: if you want to follow the Folgezettel ID system, you may find helpful the ability to manage notes in the sidebar as a nested list without using Folders structure. This would allow you to expand or collapse sections and sub-sections in order to improve the way to view and work with the different branches
It is not about a list within the note but about managing notes as a nested list
Proposed solution
Expanded Note list example

Collapsed Note list example

Current workaround (optional)
Related feature requests (optional)