Hi there! Super interesting stuff!
I tested it the other day and realized one problem early on, that I would run out of coal early on and won't produce more coal than what I'm consuming with dark-age science being made. This would lead me running out of all my coal gone and me stranded and having to restart.
After a couple restarts and trying different things, I resorted to /editor some coal in until I maybe sorta broke even with my coal production and consumption.
Is this something you designed for?