9b53cac570
When delegate-task resumes a session via session_id, the response task_metadata now includes a subagent field identifying which agent was running in the resumed session. This allows the parent agent to know what type of subagent it is continuing. - sync-continuation: uses resumeAgent extracted from session messages - background-continuation: uses task.agent from BackgroundTask object - Gracefully omits subagent when agent info is unavailable