export declare class User {
    /**
     * Unique identifier for the account.
     * Typically a MongoDB ObjectId string used as a primary key in the system.
     *
     * @example "000000000000000000000000"
     */
    id: string;
    /**
     * Display name of the user.
     * Commonly shown in UI elements and used for mentions and labels.
     *
     * @example "Timo Scheuermann"
     */
    username: string;
    /**
     * Email address registered to the account.
     * Used for login, contact, and user identification.
     *
     * @example "timo@example.com"
     */
    email: string;
    /**
     * Optional URL of the user’s avatar image.
     * Used to personalize the interface and visually identify users.
     *
     * @example "https://file.svi-itlab.com/avatar/000000000000000000000000.webp"
     */
    avatar?: string;
}