I ran 4 AI agents on my backlog and went for coffee

A few weeks ago I picked 4 features from my backlog, typed one command, and walked away from my desk. I made coffee. I did laundry. I checked on the build about 40 minutes later. Three features were done - branches created, tests written, code implemented, PRs ready for review. The fourth was still in progress, working through a tricky edge case in the payment integration. No merge conflicts. No "which file did agent 2 break?" debugging. Each agent worked in its own isolated worktree, on its own branch, completely unaware of the others. This is what I spent the last year building. And it almost didn't happen. Three months before the coffee moment Rewind to early 2025. I'm building a B2B platform - NestJS monorepo, TypeScript, the usual stack. I use Claude Code for everything. And every single session starts the same way. "Here's how my guards work. Here's the interceptor chain. Here's why the repository pattern matters. No, don't put business logic in the controller." Twenty minutes. E