/**
 * Local storage adapter.
 * Manages the local cache, corpus, and artifact storage.
 */
import type { NormalizedPaperRecord } from "../../schemas/index.js";
export interface CacheEntry {
    doi: string;
    path: string;
    artifact_type: string | null;
    cached_at: string;
}
export declare function checkCache(doi: string, cacheDir?: string): {
    found: boolean;
    path: string | null;
    entry: CacheEntry | null;
};
/**
 * Store an artifact in the local cache.
 */
export declare function cacheArtifact(doi: string, artifactPath: string, artifactType: string, cacheDir?: string): CacheEntry;
export declare function saveParsedRecord(paperId: string, record: NormalizedPaperRecord, basePath: string): void;
export declare function loadParsedRecord(paperId: string, basePath: string): NormalizedPaperRecord | null;
export declare function loadAllParsedRecords(basePath: string): NormalizedPaperRecord[];
export interface CorpusIndex {
    name: string;
    papers: CorpusPaperRef[];
    created_at: string;
    updated_at: string;
}
export interface CorpusPaperRef {
    paper_id: string;
    doi: string | null;
    title: string;
    added_at: string;
}
export declare function addToCorpus(corpusName: string, paperId: string, doi: string | null, title: string, basePath: string): CorpusIndex;
export declare function listCorpus(corpusName: string, basePath: string): CorpusPaperRef[];
export declare function removeFromCorpus(corpusName: string, paperId: string, basePath: string): CorpusIndex;
export declare function deduplicateCorpus(corpusName: string, basePath: string): CorpusIndex;
export declare function listAllCorpora(basePath: string): string[];
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