Function classifyError

packages/runtime/src/provider-error-classification.ts:575–579

(error: unknown)

 * rank last so "generate" can never become a rate limit.
 */
export function classifyError(error: unknown): string {
  if (RetryError.isInstance(error) && error.reason === 'abort') return 'Abort';
  const facts = normalizeProviderError(error);
  return facts ? classifyProviderFacts(facts) : 'Other';
}

function classifyProviderFacts(facts: ProviderErrorFacts): string {
  const { target: classificationTarget, evidence } = facts;