/**
 * Solution persistence for compound extraction.
 *
 * Extracted from compound-extractor.ts — saving extracted solutions,
 * updating re-extraction counters, and managing extraction state.
 */
import type { ExtractedSolution } from './extraction-gates.js';
export interface LastExtraction {
    lastCommitSha: string;
    lastExtractedAt: string;
    extractionsToday: number;
    todayDate: string;
}
/** Load last extraction state */
export declare function loadLastExtraction(): LastExtraction;
/** Save last extraction state */
export declare function saveLastExtraction(state: LastExtraction): void;
/** Save an extracted solution as experiment */
export declare function saveExtractedSolution(sol: ExtractedSolution, _sessionId: string): string | null;
/**
 * Increment reExtracted counter on existing solution that matches given tags.
 */
export declare function updateReExtractedCounter(tags: string[]): void;
/**
 * Observability: detect references to existing solutions in new content → emit acted_on.
 */
export declare function emitCompoundExtractActedOn(sessionId: string, newSolutionName: string, newContent: string, newSupersedes: string | null): void;