Hey Tony! Nice to see you here 
I believe the issues you share mention context specific vars for Netliy Dev which I would also love to see happening (hence my ealiest post ) .
But here, I just need my default environment vars to be picked up by Netlify Dev and because the Doc mentions them as being already part of Netlify Dev, I assumed this would work right now.
If not, what’s the best way to pass env variables to Netlify Dev until this issue is addressed and we can do it with netlify.toml?