This is one of the worst use cases for AI. You have no way to verify the quality of the output. Many of these texts are going to have pronunciations that will be difficult for today’s TTS systems. Plus, many of these are already available from good voice actors, many of them free, and they do the proper service to these texts.
It seems like you did a lot of good technical work, but I find this project entirely useless and a waste of resources.
Discord isn’t the right tool for a knowledge base, but it’s great for communities. I run several servers but I wouldn’t recommend it for developer projects.