/** Remove a URL's trailing slashes in one pass, including long malformed input. */
export function stripTrailingSlashes(value: string): string {
  let end = value.length;
  while (end > 0 && value.charCodeAt(end - 1) === 47) end--;
  return value.slice(0, end);
}

/** Gateway callers append their own /v1 path; accept either base URL form. */
export function normalizeGatewayBaseUrl(value: string): string {
  const base = stripTrailingSlashes(value);
  return base.endsWith("/v1") ? base.slice(0, -3) : base;
}