My cofounder and I each run our own Claude Code agent locally. Each has built up real context over time: strategy, customer notes, past decisions, conventions.

The problem: that context is trapped on one machine. When he asks his agent something I already worked out with mine, he starts from zero. We're maintaining two "company brains" and they're drifting apart.

I don't want to share everything. Half my local context is personal or half-baked. I want a shared subset both agents read and write, with the rest kept private.

My plan: one `shared/` folder synced over Google Drive, both agents pointed at it. Company stuff in `shared/`, personal stays local. Simple, but I doubt it survives contact: sync conflicts when both write at once, no history of who changed what, no real boundary beyond the folder name.

How do you actually handle this?

- Shared folder, git repo, a database, something else? - How do you split shared vs. private without leaking one into the other? - What breaks when two agents write the same knowledge?