I'm going to cheat and link you to this interview I did on Uses This, as I'd just be copy + pasting anyway ;)
https://usesthis.com/interviews/noopkat/
I have a pretty minimal tool setup in all honesty. In most personal projects I don't even use linters or formatters. I like just using my terminal and coding things without too many automated processes or plugins. It's less maintenance and less issues if I'm jumping on a random computer or pairing with someone else.
Default system config - this is a little ambiguous to me so follow up if you didn't find the answer to that in the interview :D