/**
 * Light post-pass for marked HTML: wiki `?slug` links + lazy images.
 * Content is trusted site markdown — no tag stripping.
 */

export function decorateHtml(html) {
  if (!html) return "";
  if (typeof document === "undefined") return String(html);

  const tpl = document.createElement("template");
  tpl.innerHTML = String(html);
  for (const a of tpl.content.querySelectorAll("a[href]")) {
    const href = a.getAttribute("href") || "";
    if (href.startsWith("?")) a.setAttribute("data-internal", "true");
    else if (href.startsWith("http")) {
      a.setAttribute("target", "_blank");
      a.setAttribute("rel", "noopener noreferrer");
    }
  }
  for (const img of tpl.content.querySelectorAll("img:not([loading])")) {
    img.setAttribute("loading", "lazy");
  }
  return tpl.innerHTML;
}