/**
 * Derive a measurable completion condition from recent conversation.
 */
import type { GoalModelConfig } from './config.js';
import { type GoalModelRegistry } from './llm.js';
export interface DeriveOptions {
    registry: GoalModelRegistry;
    modelConfig: GoalModelConfig;
    transcript: string;
    signal?: AbortSignal;
}
/**
 * Returns a one-line condition, or null if the model is unavailable, the call
 * fails, or no actionable objective could be inferred (model returned NONE).
 */
export declare function deriveCondition(opts: DeriveOptions): Promise<string | null>;
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