/**
 * Thread Memory — fork memory from source to branch threads.
 */
import type { Database } from "./schema.js";
/**
 * Fork memory from a source thread to a new branch thread.
 * Copies active (non-superseded, non-expired) semantic_notes with new IDs,
 * remaps linked_notes references, copies note_embeddings, copies
 * temporal_narratives, and copies all episodes (with new IDs, marked
 * consolidated so the branch does not re-consolidate them into duplicate
 * notes). Wrapped in a single transaction for atomicity.
 * Returns the number of items copied.
 */
export declare function forkMemory(db: Database, sourceThreadId: number, targetThreadId: number): {
    notesCopied: number;
    narrativesCopied: number;
    episodesCopied: number;
};
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