/**
 * Shared provider-failure retry helper: wraps generation calls (harness or
 * --self) so transient provider errors (network_error, timeouts, 5xx,
 * rate limits) are retried with backoff, while permanent failures (auth,
 * model-not-found, billing) fail fast on the first attempt. Any successful
 * call returns immediately - the failure count never carries over.
 */
export declare const RETRY_ATTEMPTS = 3;
export declare const RETRY_DELAYS_MS: number[];
export declare function isTransientProviderError(err: unknown): boolean;
/**
 * Runs `fn`, retrying up to RETRY_ATTEMPTS total tries when it throws a
 * transient provider error (see isTransientProviderError), sleeping
 * RETRY_DELAYS_MS between attempts. A success returns at once; permanent
 * errors and exhausted attempts rethrow the last error.
 *
 * `onAttempt` fires before each try with the 1-based attempt number, so
 * callers can mutate their closure between attempts (e.g. IMP-913: warn the
 * model that a previous crashed attempt may have already created items).
 */
export declare function withProviderRetry<T>(fn: () => Promise<T>, log?: (text: string) => void, onAttempt?: (attempt: number) => void): Promise<T>;