Is there another obvious term for this? I didn't know what it meant but now that I've learned I find it a valuable generic term for this class of thing.
answer to which the standard response that _led_ to "code forge" being a word, is: ok but what about all the stuff that isn't just "git on the network"? Pull requests, basic tickets, eventually some of the CI...
Or framed differently: "What category of software would you describe Github as?"
For all of this, the answer the community came together to find is ... Code Forge.
One extra resource on it: ForgeFed[1], which describes itself as:
> ForgeFed is a federation protocol for software forges and code collaboration tools for the software development lifecycle and ecosystem. This includes repository hosting websites, issue trackers, code review applications, and more. ForgeFed provides a common substrate for people to create interoperable code collaboration websites and applications.