fix(editor): stabilize image workflows and editing controls

static/js/settings/imagePreferences.js

@@ -0,0 +1,26 @@
+import { invalidateSettings } from '../appConfig.js';
+
+export async function readImagePreferences() {
+  const response = await fetch('/api/auth/settings', { credentials: 'same-origin' });
+  if (!response.ok) throw new Error('Could not load image settings');
+  return response.json();
+}
+
+let saveQueue = Promise.resolve();
+export function waitForImagePreferences() { return saveQueue; }
+export function saveImagePreferences(patch) {
+  const save = async () => {
+    const response = await fetch('/api/auth/settings', {
+      method: 'POST', credentials: 'same-origin',
+      headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(patch),
+    });
+    if (!response.ok) throw new Error(response.status === 403
+      ? 'Admin access is required to change image settings.' : 'Could not save image settings');
+    invalidateSettings();
+    window.dispatchEvent(new CustomEvent('image-preferences-changed', { detail: patch }));
+    return response;
+  };
+  const result = saveQueue.then(save);
+  saveQueue = result.catch(() => {});
+  return result;
+}