My current thought is setting up a deployment machine. That machine will have access to push extensions to our SCA site and pull from our bitbucket. We will have all the devs merge code via PRs into the repo lon bitbucket then go pull the code from the branch on the deployment machine, and then finally deploy the necessary extensions.
Seems like all the NS stuff to handle this in a CLI way isn't really meant for SCA or the docs are 5+ years old and several versions of the tools out of date.
But at least getting to 1 machine capable of running the deploy will be better than the free-for-all we have had. Our current process is really weird in 2025 for web development to make sure we aren't losing changes because 2 people touched the same extension.