/**
 * Turn ctx search results into a compact "prior context" brief — designed to be
 * PREPENDED to an agent's prompt so it starts a task already knowing what past
 * sessions decided, tried, and hit. Token-frugal on purpose (the whole point of
 * recall is to avoid re-including fat transcripts).
 */
import type { CtxResult } from "./ctx.js";
/** de-duplicate to the best snippet per session, newest/highest-rank first. */
export declare function topPerSession(results: CtxResult[], max: number): CtxResult[];
/** the markdown brief. Empty-safe: returns a one-liner when nothing is recalled. */
export declare function recallBrief(results: CtxResult[], opts?: {
    label: string;
    max?: number;
}): string;
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