Adapt the Kirigami tutorial into a first start for a UI prototype
This will be completely non-functional for a long time. The idea is to transfer the interactions and convergent UI design from the ui-design.md text file to a working demo, and only when (or if) it works, try to merge it with the codebase of Skanpage to get something useful out of it. Skanpage won't stand still in the meantime, the best way to avoid continuous merge pain is to stick to Marascan's unique elements and defer the rest as long as possible. As a start, this is taking a shot at the back-and-forth between the Scan Options and Page Grid views. I had a hard time placing the Scan action on the desktop toolbar because I wanted it as far left as possible, but Kirigami right-aligns all primary actions and with Scan Options visible, it ends up in an awkward spot in the middle. As a workaround for the time being, I put it into the leftmost visible Page as main Primary Action and make it invisible in the ones further right. Perhaps Kirigami will one day allow me to add more "global actions" toolbar buttons left-aligned next to the hamburger menu.