import type { HydeDocument } from '../interfaces/database.interface.js';
import { type HydeGenerationMode } from './hyde.env.js';
/** Hash source text without persisting the source itself in frame metadata. */
export declare function computeHydeSourceTextHash(sourceText: string): string;
/**
 * Select persisted documents that belong to the currently active generation
 * mode and, for frame-v1, the newest generation marker group.
 */
export declare function selectHydeDocumentsForGeneration(documents: HydeDocument[], mode: HydeGenerationMode, sourceText: string): HydeDocument[];