Your files app is wonderful and exactly what I was looking for for years (after dozens of disappointing search queries for "flat file cms gallery"). Thank you very much for this piece of exciting work!
Not aware of every tech detail I'd like to ask some questions:
Managing multi user/multi (sub-)folders
How about one files app (index.php in root) and a config file in every subfolder for e.g. different users per subfolder (would make the the display of ~/subfolder/_files/config.php impossible)?
Extending config.php for an array of element user and password?
Looking forward for further releases!
All the best, look