Any chance of us putting in a Sample Pim, based on a Treeview component, in a future Xailer distribution?
The backend could be DBF-based, like Kresin's KS Organizer https://www.kresin.ru/en/ksorg.html. Or Json-based, like Treeline https://treeline.bellz.org/
There are some Sqlite-based Personal Information Managers, as well.
I've used pims for years, and it would be helpful to have a solid sample to modify and customize.