Subagent
Displays a subagent run, with its tool calls and result.
Default
Running
While the subagent runs, the line has status="running" and its content shows the tool calls so far. Add the result when the subagent finishes.
Details
Put the task the subagent was given at the top of the content, with its model and tools as Badge items. Show how long it ran in a Trace.Description after the title.