/**
 * Authentication configuration for the SDK.
 * Implementation: src/client/auth.ts (PR-2.2).
 *
 * TORUK-CORE prediction routes accept (in priority order):
 *   1. Public chatflows (no credentials required)
 *   2. API key via `x-api-key` header or `?apikey=` query param
 *   3. JWT bearer via `Authorization: Bearer <token>`
 */
export type AuthConfig = {
    type: 'apiKey';
    apiKey: string;
} | {
    type: 'jwt';
    token: string;
    refresh?: () => Promise<string>;
} | {
    type: 'none';
};