lidhold keeps a closed Mac working until the job is done

Field notes

The utility models active work as a lease rather than leaving a permanent sleep override enabled. Agent hooks refresh that lease on tool calls, while `lidhold run` passes through the wrapped command’s output, exit code, and Ctrl-C behavior. The page shows a 20% battery floor, thermal and heavy-work ceilings, and a diagnostic command that reports whether the selected engine should survive a closed lid on the user’s machine.