Fix item loading

web/lib/fetchAllPages.js

@@ -0,0 +1,19 @@
+export async function fetchAllPages(urlBuilder) {
+  const items = [];
+  let page = 0;
+  let totalPages = 1;
+
+  while (page < totalPages) {
+    const res = await fetch(urlBuilder(page));
+    if (!res.ok) {
+      throw new Error(`HTTP ${res.status} – ${res.statusText}`);
+    }
+
+    const data = await res.json();
+    items.push(...(data.content ?? []));
+    totalPages = Math.max(data.totalPages ?? 1, 1);
+    page += 1;
+  }
+
+  return items;
+}