/**
 * The goal vector: what "relevant" is measured against.
 *
 * Not the whole history — that would make every message relevant to
 * itself — but the four things that say what the turn is for right now:
 * the first user message (the task), the most recent user turns (the
 * requirements as they were refined), the open items of the task list
 * when the turn keeps one, and the latest assistant text (its stated
 * intent). Weighted by repetition rather than a coefficient: the task
 * statement is included twice so a turn that has drifted into detail is
 * still scored against what it was asked to do.
 */
import type { Message } from '../../types/message/index.js';
export interface GoalSources {
    /** Titles of task-list items not yet completed, when the host keeps a task store. */
    readonly openTasks?: readonly string[];
    /** How many of the latest user turns count as live requirements. */
    readonly recentUserTurns?: number;
}
export declare function buildGoal(messages: readonly Message[], sources?: GoalSources): string;
//# sourceMappingURL=goal.d.ts.map