import type { ICoordinatorContext, IDispatchStrategy, ISubAgentContextBuilder, PlanStep, StepResult } from '@mcp-abap-adt/llm-agent';
/**
 * Dispatch the step to a named subagent from the registry.
 * If step.agent is unset or absent from registry, returns ok=false StepResult.
 *
 * When constructed with an `ISubAgentContextBuilder`, the builder is invoked
 * before `sub.run()` to assemble the `context` preamble. If the subagent's
 * `contextPolicy === 'required'` and the builder returns empty context,
 * dispatch returns a clean error instead of invoking the subagent.
 */
export declare class SubAgentDispatch implements IDispatchStrategy {
    private readonly contextBuilder?;
    readonly name = "subagent";
    constructor(contextBuilder?: ISubAgentContextBuilder | undefined);
    dispatch(step: PlanStep, ctx: ICoordinatorContext): Promise<StepResult>;
}
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