import type { ProjectKnowledgeDocument, ProjectKnowledgeDiagnosticReporter, ProjectKnowledgeQuery, ProjectKnowledgeResult } from './types.js';
declare const INDEX_SCHEMA = "comet.project-knowledge.index.v3";
declare const MAX_SOURCE_BYTES: number;
export interface ProjectKnowledgeIndexOptions {
    readonly projectRoot: string;
    readonly cacheRoot?: string;
    readonly storageRoot?: string;
    readonly reportDiagnostic?: ProjectKnowledgeDiagnosticReporter;
}
export interface ProjectKnowledgeIndexStatus {
    readonly schema: typeof INDEX_SCHEMA;
    readonly available: boolean;
    readonly databasePath: string;
    readonly repositoryId: string;
    readonly workspaceId: string;
    readonly sourceCount: number;
    readonly sources: readonly ProjectKnowledgeIndexSource[];
    readonly sectionCount: number;
    readonly updatedAt?: string;
    readonly lastQueryMs?: number;
    readonly lastCandidateCount?: number;
    readonly channels: readonly string[];
    readonly diagnostic?: string;
}
export interface ProjectKnowledgeIndexSource {
    readonly source: string;
    readonly kind: ProjectKnowledgeDocument['kind'];
    readonly archivedAt?: string;
    readonly updatedAt: string;
}
export interface ProjectKnowledgeIndexSyncResult {
    readonly changedSources: readonly ProjectKnowledgeDocument[];
    /** Sources successfully refreshed during this sync; used to bound the rg fallback. */
    readonly refreshedSources: readonly ProjectKnowledgeDocument[];
    readonly status: ProjectKnowledgeIndexStatus;
}
interface ParsedSection {
    readonly anchor: string;
    readonly title: string;
    readonly headingPath: string;
    readonly body: string;
    readonly lexicalTerms: string;
}
export declare function parseProjectKnowledgeSections(source: string, markdown: string): readonly ParsedSection[];
export declare class ProjectKnowledgeIndexStore {
    readonly databasePath: string;
    readonly repositoryId: string;
    readonly workspaceId: string;
    lastSyncReadBytes: number;
    private readonly projectRoot;
    private readonly reportDiagnostic;
    private database;
    constructor(options: ProjectKnowledgeIndexOptions);
    open(): Promise<void>;
    close(): void;
    syncCorpus(corpus: readonly ProjectKnowledgeDocument[]): Promise<ProjectKnowledgeIndexSyncResult>;
    search(query: ProjectKnowledgeQuery): readonly ProjectKnowledgeResult[];
    status(): ProjectKnowledgeIndexStatus;
    rebuild(corpus: readonly ProjectKnowledgeDocument[]): Promise<ProjectKnowledgeIndexStatus>;
    private applySourceDelta;
    private removeSource;
    private removeWorkspace;
    private searchChannel;
    private requireDatabase;
}
export declare function readProjectKnowledgeIndexStatus(options: ProjectKnowledgeIndexOptions): Promise<ProjectKnowledgeIndexStatus>;
export { INDEX_SCHEMA, MAX_SOURCE_BYTES };
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