import { type QuestionGenerationResult } from "../domain/question.schema.js";
import { createStructuredModel } from "../../shared/agent/model.config.js";
import { type QuestionerInput } from "./question.input.js";
export interface QuestionerAgentConfig {
    /** Optional model config override. */
    modelConfig?: Parameters<typeof createStructuredModel>[3];
}
/**
 * Stateless question-generation agent. Accepts a `QuestionerInput` envelope,
 * selects the preset for the given mode, invokes the LLM, and applies
 * guardrails (dedup + strategy diversity).
 */
export declare class QuestionerAgent {
    private model;
    constructor(config?: QuestionerAgentConfig);
    /**
     * Generate up to 3 decision questions from the given input.
     *
     * @param input  Envelope with mode, userId, source info, and mode-specific context.
     * @param options.signal  Optional AbortSignal to cancel the in-flight LLM call.
     * @returns A result with parallel questions[] and strategies[] arrays,
     *   or null when generation failed, guardrails dropped all candidates,
     *   the LLM threw, or the call was aborted.
     */
    invoke(input: QuestionerInput, options?: {
        signal?: AbortSignal;
    }): Promise<QuestionGenerationResult | null>;
}