Add left sidebar with directory / file chooser to viewer

I would like to share a directory of markdown notes with a public link.
The files are aranged by name, including subfolders.

I did not find a way how to preserve the overwiew about notes while viewing one note.
Currently a rendered view of the note will be shown as modal, hiding the directory structure.

I’m searching for a solution to show the directory structure in a sidebar on the left (similar to the file details sidebar on the right) allowing easy switching between different notes.

Preserving the view position when switching between notes would also be very helpfull.

Is anyone aware of a possible solution ?