Quick architecture question.

I’m setting up a long-term workspace for a client. She’s an author/expert but completely non-technical.

I need one canonical workspace that both of us can access from different computers, while agents can also work against the same files and everything stays synchronized/versioned.

My underlying architecture is human-readable files have to remain the source of truth. Any memory/retrieval layer can sit on top, but I don’t want the project locked inside a proprietary system.

The cleanest option I’ve found so far is private GitHub + local Codex, possibly Codespaces for her so she doesn’t have to deal with Git. I’ve also looked at a shared VPS/Tailscale layer if agents eventually need a persistent environment.

Have you solved something like this before? What architecture would you use today if one collaborator is technical and the other one is non-technical?