30 years ago I did 12 hour shifts at a factory, and it really wasn’t too bad. It was 4 on 3 off one week, and 3 on 4 off the other week. The OT on week one made up for the lost hours on week two, and having 3 or 4 days off was pretty sweet. But it was a QC job, for a European company in the US, sitting all night inspecting small parts, and was pretty chill.

My brother in law worked at the BMW factory in SC, and they did 4 10 hour shifts, with the days off rotating each week. They only ran 6 days a week, so you’d end up with 5 days off every 4 weeks whenever the days off from two weeks lined up. He liked the 5 days off when they happened, but the rotating days off didn’t line up with my sisters schedule, so that was tough.

It’s called an Associated Account Ban. Lots of reading available for that search term.

It’s to stop banned developers from getting new accounts, but often links accounts in questionable ways.

I’ve always found building complete things to be the best way to learn (since you have to solve all of the problems for the entire app to finish), so IMO this would be a good project to learn on.