What things should I save in the database with remote storageManager?

gjs-html and gjs-css are your final results, so probably you would print them on some page for the end user. gjs-components and gjs-style contains the JSON data about your template so you have to use those if you need to edit the template in the editor

@artf would there be problems if I would just insert the saved html and css to the editor to edit it? and not use the gjs-components and gjs-style?

@pranzikkin if you use custom elements and you care about the consistency with editing your templates, well yeah, you'll get problems