fix(settings): restore radio groups by name on autosave rollback

public/js/settingsAutosave.js

@@ -60,7 +60,16 @@
       try {
         var snap = JSON.parse(snapshot || '{}');
         if (el.classList && el.classList.contains('toggle')) el.classList.toggle('on', !!snap[el.id]);
-        else if (el.type === 'checkbox' || el.type === 'radio') el.checked = !!snap[el.id];
+        else if (el.type === 'radio') {
+          // Radio groups are keyed in valuesById by the group name (not per-element id,
+          // which grouped radios often lack). Restore the whole group to the snapshot value.
+          var want = snap[el.name];
+          if (want != null) {
+            var group = el.name ? document.getElementsByName(el.name) : [el];
+            for (var i = 0; i < group.length; i++) group[i].checked = (group[i].value === String(want));
+          }
+        }
+        else if (el.type === 'checkbox') el.checked = !!snap[el.id];
         else if (el.tagName === 'SELECT' && snap[el.id] != null) el.value = snap[el.id];
       } catch (e) {}
     }

tests/settings_autosave_smoke.test.js

@@ -112,6 +112,13 @@ test('resync mechanism: controller exposes resync and keeps a binds registry', a
   assert.match(ctrl.text, /function resync\(\)/);
 });
 
+test('rollbackField restores radio groups by name (not by missing element id)', async () => {
+  const ctrl = await supertest(app).get('/js/settingsAutosave.js').expect(200);
+  // grouped radios (e.g. au-mode) lack element ids; rollback must use the group name
+  assert.match(ctrl.text, /getElementsByName/);
+  assert.match(ctrl.text, /snap\[el\.name\]/);
+});
+
 test('settings.js calls SettingsAutosave.resync for all async-populated clusters', async () => {
   const js = await supertest(app).get('/js/settings.js').expect(200);
   const clusters = ['smtp', 'security', 'data', 'monitoring', 'alerts', 'autobackup', 'metrics', 'dns', 'auto-update', 'split-tunnel', 'pihole', 'portal', 'route-block'];