Isolated dev sessions for multiple local trigger dev instances

Right now, multiple trigger dev instances for the same project share one queue, so any instance can run any task and they end up “stealing” each other’s work. The ask is to support something like preview branches, but for the dev environment: separate dev sessions (e.g. a session id or “dev branch”) so each local instance only runs tasks triggered from that same session. That would let you run several work trees or app copies in parallel (e.g. with Codex/Claude) without tasks from one ending up running in another.