Auto-index main vimwiki index file?

I love how the diary index auto-updates as new entries are added.

How can I do the same for the main non-diary wimwiki index file?

OK, so I guess that isn’t possible. In the meantime I copied all the file names in a folder, used VS Code to add open and close double-brackets for each one and pasted that into my index file. Functional, not easy…