/** Fetch wrapper for absolute app paths when Next.js basePath is enabled. */
export function appFetch(input: RequestInfo | URL, init?: RequestInit): Promise<Response> {
  if (typeof input !== 'string' || !input.startsWith('/') || input.startsWith('//')) {
    return fetch(input, init);
  }
  const basePath = process.env.NEXT_PUBLIC_APP_BASE_PATH ?? '';
  return fetch(`${basePath}${input}`, init);
}