import type Database from "better-sqlite3";
export interface UserMemoryEntry {
    id: number;
    userId: string;
    summary: string;
    detail: string;
    sourceChat: string | null;
    visibility: "private" | "public";
    createdAt: string;
    updatedAt: string;
}
export declare function addUserMemory(db: Database.Database, userId: string, summary: string, detail?: string, visibility?: "private" | "public", sourceChat?: string): number;
export declare function listUserMemory(db: Database.Database, userId: string, visibilityFilter?: "private" | "public"): UserMemoryEntry[];
export declare function getUserMemory(db: Database.Database, id: number): UserMemoryEntry | undefined;
export declare function updateUserMemory(db: Database.Database, id: number, updates: {
    summary?: string;
    detail?: string;
    visibility?: "private" | "public";
}): boolean;
export declare function deleteUserMemory(db: Database.Database, id: number): boolean;