A tracked async subagent task persisted in agent state.
Each task maps to a single thread + run on a remote Agent Protocol server.
The taskId is the same as threadId, so it can be used to look up
the thread directly via the SDK.
Name of the async subagent type that is running.
ISO timestamp of the most recent status poll via the check tool.
ISO timestamp of when the task was launched.
What this subagent does. The main agent uses this to decide when to delegate.
Run ID for the current execution on the thread.
Current task status.
Unique identifier for the task (same as thread id).
Thread ID on the remote server.
ISO timestamp of the most recent task update — set when the task status changes or a follow-up message is sent via the update tool.
