And the UIs for all this stuff are going to be done in QML, and if you can do HTML and CSS QML is much easier and more intuitive. It puts all the animations, gestures, etc in the QML files and they have a visual designer in QtQuick so you don't actually need to write code at all if you don't want to.
Thanks for pointing out that page. I'd not found much but then I was searching for 'user interface testing' &c.
"The goal of the KDE VDG is to create a central point for all visual design work – a one-stop for all KDE's visual design needs, if its logo's, icons, visuals, illustrations, launch pages, plasma themes or presentation and promo-material."
Above from the 'what' page on that site. Might be just my expectations but I read that Web site as being about branding and visual design rather than UI and workflows.
The 'who' page mini-bios do not appear to have anyone from a UI / workflow background - or is it that am I just out of date with the job titles that cover those skills these days?
And the UIs for all this stuff are going to be done in QML, and if you can do HTML and CSS QML is much easier and more intuitive. It puts all the animations, gestures, etc in the QML files and they have a visual designer in QtQuick so you don't actually need to write code at all if you don't want to.