I managed to get the course page up and running for the *other* course (that's not online and doesn't have videos that got sucked in to Zoom's genAI system). Much easier, but I couldn't find my notebook with all my lectures in it from 3 years ago, last time I taught this class. So... if it's not in my campus office, I'm going to be extremely sad and have a LOT of work to do. If it's there, I'm all good to go for the semester!