Stable error codes

function classify(status: number, code?: string) {
  if (code === "API_KEY_RATE_LIMITED") return "rate_limited";
  if (code === "TRIAL_API_LIMIT_REACHED") return "trial_exhausted";
  if (code === "SUBSCRIPTION_REQUIRED") return "billing_required";
  if (code === "API_BUCKET_SCOPE_DENIED") return "bucket_scope";
  if (code === "API_KEY_SURFACE_DENIED") return "surface_denied";
  if (code === "API_COMPANY_ONLY") return "company_required";
  if (code === "DEVICE_BLOCKED") return "device_blocked";
  if (status === 429) return "rate_limited";
  if (status === 402) return "billing_required";
  if (status === 403) return "permission_denied";
  if (status === 410) return "gone";
  return "unknown";
}