What's wrong with using just links?
(reads to the end)
Oh, it's lowkey a promotion for his product it must obviously have this native interfacing that he's hyping up about. I honestly don't see what the problem is with keeping a collection of links to Gdocs/Gdrive/Figma in the knowledge base. That's pretty much the only guaranteed way to use these tools, because all of them want to silo you into their website.