I think it'd be cooler to have it as part of the source and kind of build incrementally. So you'd have the bits in code that get added to the pair file that will then be added to the directory file... Then you can add other pairs for things like test results, and it could be decent. Some Lego Logseqesue thing :)

I wouldn't use git as a basis for it since then management is completely out. Hell, I'm probably out as well since I see git as a necessary evil.