One thing I keep getting stuck on with these systems though: they all seem to assume an agent lives in one worktree of one git repo. Maybe that is fine in a monorepo world. Outside of that, the repo boundary is often just not the task boundary. Some context lives next door, or two repos away, and the sandbox somehow has to know what to bring in.
I'm wondering if there is a tool in the agent orchestration space that prepares multi-repository worktrees for a subagent out of the box?