Is this related at all to sawdust.diy which was posted last What are you working on? https://news.ycombinator.com/item?id=49234277. Has a really similar look and feel but different feature set

Not related, but similar. You'll see a reply from me in the thread you linked.

I've added ShopSpec to a couple Ask HN threads in the past too.

Cool! Looks like a really cool project.