My poorly automated Kubuntu setup

The target audience for this post is myself. I recently set up a new (old)&#xA;laptop and tried to bring it to parity with my main Kubuntu workstation in as&#xA;few steps as possible, which turned out to be … a lot of steps, most of them&#xA;manual. I wanted to document the full process and see if I can find worthwhile&#xA;opportunities for automation.