const TRANSPORT_ERROR_PATTERNS = [  /\bSocketCloseError\b/i,  /\bSocketOpenError\b/i,  /Unable to connect to the T3 server WebSocket\./i,  /\bping timeout\b/i,] as const; export function isTransportConnectionErrorMessage(message: string | null | undefined): boolean {  if (typeof message !== "string") {    return false;  }   const normalizedMessage = message.trim();  if (normalizedMessage.length === 0) {    return false;  }   return TRANSPORT_ERROR_PATTERNS.some((pattern) => pattern.test(normalizedMessage));} export function sanitizeThreadErrorMessage(message: string | null | undefined): string | null {  return isTransportConnectionErrorMessage(message) ? null : (message ?? null);}