I created Agent-Up , an open-source desktop app and local server for running multiple coding-agent environments on one machine. Worktrees isolate source code, not the runtime The problem is that Git worktrees isolate source code, but they do not isolate the running application. When several agents work on the same monorepo, each one may need its own: application processes, ports, Docker services, logs, runtime state. Without a shared runtime manager, agents ...