The second brain I own (and why chat memory is not enough)
Chat memory is convenient until you change apps. I run a Grok Bot roster every week — Chief of Staff, specialists, digests, drafts — and I also point other agent platforms at the same durable facts about how I work. If those facts only live inside one vendor’s chat memory, I am not building a system. I am renting amnesia with a nice UI. So I keep a second brain I own. Mine is called MainVault: a markdown vault, synced with git, treated as shared memory across agents. I already wrote the high-level “owned notebook both stacks get” frame when piloting Muse beside Grok Bot. This post is the mechanism: how that notebook works day to day. No private repo links. The point is the pattern. ...