omp-headless-orchestration

Run long OMP (`omp -p`) jobs headlessly so they survive the session that dispatched them — detached tmux, NDJSON event log, polled completion, session-id recovery. Use when delegating a repo task that will run more than a couple of minutes, when the orchestrating chat/session may restart, or when recovering a run that was killed mid-turn. Do not use for a two-minute command (run it inline) or for work that needs live steering (that is a TUI session).