I have never played D&D (despite wanting to) but I really liked what you did.
It seems very well-made, though I bet people would appreciate one or two youtube tutorials (it seems very feature rich btw).You should try posting it on reddit and other sites to get more feedback.
I was seriously considering adding Linux support for my game, that already has turn-based multiplayer, and this thread was the last thing I needed to convince myself it could work.
Performance may be an issue. I wonder if people would be ok with electron games sold on steam running on linux...
You can always forgive and never trust, or trust less. Or even forgive and never speak to the person that you forgave.
So exactly like you did with your neighbours. Sounds perfectly healthy to me.