import type { Note, NoteAttachment } from './types.js';
export declare function collectReferencedAttachmentIds(note: Pick<Note, 'id' | 'markdown'>): Set<string>;
export declare function partitionAttachmentsByReference(note: Pick<Note, 'id' | 'markdown' | 'attachments'>): {
    kept: NoteAttachment[];
    removed: NoteAttachment[];
};