What happens if a long test run crashes near the end?

Phases are isolated on worker processes: if one dies, the engine replaces it and execution continues instead of taking the whole run down, and retries are configurable per phase. Plug processes are health-checked between units and restarted automatically if they died, so a crash never carries into the next unit. If the station loses the network, results are stored locally and uploaded when connectivity returns. This matters most on runs measured in hours, where losing the run means losing a full shift of bench time.