spencer-dollahite/imodule ? reverse-engineered prompt

Build me a simple student setup repo for the DoN Range Labtainers labs.

I want someone to be able to open the repo, run the donlab launcher, and have it pull down the right lab package, check that the download is valid, and start the lab without them having to figure out a lot of steps. Make the README feel like a clear setup guide for regular students, with the right instructions for Windows, Intel Macs, and Apple Silicon Macs, plus a basic troubleshooting section.

If anything needs to be checked against current Labtainers docs or VM instructions, look those up online and match the guide to what people actually need today. Keep it focused on making the launch experience smooth and reliable, and make sure the helper files and download checks all line up with the included lab archives.