export function findErrorTraceId(error: unknown): string | null {  const seen = new Set<object>();  let current: unknown = error;   while (typeof current === "object" && current !== null && !seen.has(current)) {    seen.add(current);    const record = current as {      readonly cause?: unknown;      readonly traceId?: unknown;    };    if (typeof record.traceId === "string" && record.traceId.trim().length > 0) {      return record.traceId;    }    current = record.cause;  }   return null;}