Agent Client Protocol - v1.8.0
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    Type Alias StateUpdateExperimental

    StateUpdate: types.StateUpdate

    UNSTABLE

    This capability is not part of the spec yet, and may be removed or changed at any point.

    Current foreground-work state of a reusable child session.

    Each update is a whole-object snapshot. Idle does not terminate the child; the parent can message it again, transitioning it back to running. Background activity may still emit other session updates while idle.