/**
 * Get existing token (from env or keychain)
 */
export declare function getToken(): Promise<string | null>;
/**
 * Start OAuth login flow
 */
export declare function login(): Promise<string | null>;
/**
 * Logout - remove stored token
 */
export declare function logout(): Promise<void>;
/**
 * Get authentication status
 */
export declare function getAuthStatus(): Promise<{
    authenticated: boolean;
    username?: string;
    scopes?: string[];
}>;