fix admin

public/script/utils.js

@@ -1,3 +1,20 @@
+function loadFilterPrefs(key) {
+  try {
+    const raw = localStorage.getItem(key);
+    return raw ? JSON.parse(raw) : null;
+  } catch (e) {
+    return null;
+  }
+}
+
+function saveFilterPrefs(key, value) {
+  try {
+    localStorage.setItem(key, JSON.stringify(value));
+  } catch (e) {
+    /* localStorage unavailable or quota exceeded */
+  }
+}
+
 function humanFileSize(bytes, si = false, dp = 1) {
   const thresh = si ? 1000 : 1024;