Add a whole-run deadline to CLI execution

docs/integrations/subprocess.md

@@ -37,5 +37,11 @@ process according to its own process-management policy. A later invocation is a
 new request and can make another model call; there is no resume or checkpoint
 protocol.
 
+For `run`, callers may set the [whole-run deadline](../cli.md) to bound the
+engine invocation. It is separate from the per-attempt generation timeout and
+does not include child startup or output writing. A deadline failure exits 1;
+supervisors still own process termination when they need to stop the child
+outside that engine interval.
+
 For deployment, filesystem permissions, and sensitive-artifact handling, see
 the [operations guide](../operations.md).