Headless timing field now documented for stopped, deferred and error turns

When Claude Code runs headless (without its interactive screen, usually driven by a script), its output follows a published structure. The description of one timing field in that structure now covers more kinds of turns (a turn is one exchange of request and reply):

• turns that were stopped
• turns that ended on a deferred tool
• turns that ended with an error subtype

It also says that a worker Anthropic hosts, with telemetry (usage reporting) on, sends the value on results marked is_error too. Before, the description said turns that were stopped or failed after sending were counted but carried no value.