displayName
claude-code Task tool spawn (general-purpose)
parentSessionId
spawnTrigger
subagent-dispatch
subagentId
invokingToolId
lifecyclePolicy
ephemeral
startedAt
2026-04-28T10:05:00Z
endedAt
2026-04-28T10:07:32Z
status
completed
returnedTo
parent session ToolResult for tool-descriptor:agent invocation