Fix local images and em dash rendering

sites/puzzles/src/remark/typography.mjs

@@ -0,0 +1,22 @@
+const EM_DASH_PATTERN = /---/g;
+
+function visitTextNodes(node) {
+  if (!node || typeof node !== "object") return;
+
+  if (node.type === "text" && typeof node.value === "string") {
+    node.value = node.value.replace(EM_DASH_PATTERN, "—");
+    return;
+  }
+
+  if (!Array.isArray(node.children)) return;
+
+  for (const child of node.children) {
+    visitTextNodes(child);
+  }
+}
+
+export default function remarkTypography() {
+  return (tree) => {
+    visitTextNodes(tree);
+  };
+}