export declare const AUTH_DIR: string;
export declare const AUTH_FILE: string;
export interface StoredAuth {
    access_token: string;
    refresh_token: string;
    user_id: string;
    email: string;
    expires_at?: number;
    api_key?: string;
    session_key?: string;
}
export declare function loadAuth(): StoredAuth | null;
export declare const saveAuth: (auth: StoredAuth) => void;
export declare const clearAuth: () => void;
/** Compare and change inside the same process-shared lock, preserving unrelated fields. */
export declare function updateAuth(expected: StoredAuth | null, changes: Partial<StoredAuth> | null): {
    updated: boolean;
    current: StoredAuth | null;
};
/** Network refresh uses a separate async lock; logout never waits for an HTTP request. */
export declare function withSessionRefresh<T>(operation: () => Promise<T>): Promise<T>;