Struct WorkerHandle 

pub struct WorkerHandle {
    pub tx: UnboundedSender<String>,
    pub task_id: TaskId,
}

A long-lived handle to a background worker, enabling cross-turn continuation via send_message.

When a worker is spawned in the background, its AgentRuntime lives in a dedicated tokio task that drains an mpsc channel of incoming prompts. Each send_message to this worker pushes a prompt onto tx; the worker task runs it as a new turn on the same runtime (preserving transcript/context). task_id links this handle to the TaskRegistry entry so task_get / task_output / task_stop work uniformly.

Fields

tx: UnboundedSender<String>

Push a new turn prompt to the background worker. Returns Err if the worker task has exited (channel closed).

task_id: TaskId

The TaskRegistry id under which this worker is registered.