fix: address review feedback on admin pages and backgrounds

- guard config.default_quick_amounts with ?? [] so the edit page survives a
  cabinet deployed ahead of the bot
- roll back the first faq reorder request when the second fails so both
  questions don't end up with the same display_order
- stop overriding the aurora palette in render for the legacy seed colors
- add the missing legalPages / displayMode / quickAmounts keys to fa and zh

src/pages/AdminLegalPages.tsx

@@ -521,7 +521,14 @@ function FaqEditor({ onDirtyChange }: { onDirtyChange: (dirty: boolean) => void
   const reorderMutation = useMutation({
     mutationFn: async ({ a, b }: { a: FaqPageItem; b: FaqPageItem }) => {
       await adminLegalPagesApi.updateFaqPage(a.id, { display_order: b.display_order });
-      await adminLegalPagesApi.updateFaqPage(b.id, { display_order: a.display_order });
+      try {
+        await adminLegalPagesApi.updateFaqPage(b.id, { display_order: a.display_order });
+      } catch (err) {
+        await adminLegalPagesApi
+          .updateFaqPage(a.id, { display_order: a.display_order })
+          .catch(() => {});
+        throw err;
+      }
     },
     onSuccess: () => {
       haptic.success();

src/pages/AdminPaymentMethodEdit.tsx

@@ -383,7 +383,9 @@ export default function AdminPaymentMethodEdit() {
           {quickAmountsError && <p className="mt-1 text-xs text-error-400">{quickAmountsError}</p>}
           <p className="mt-1 text-xs text-dark-500">
             {t('admin.paymentMethods.quickAmountsHint', {
-              defaults: config.default_quick_amounts.map((kopeks) => kopeks / 100).join(', '),
+              defaults: (config.default_quick_amounts ?? [])
+                .map((kopeks) => kopeks / 100)
+                .join(', '),
             })}
           </p>
         </div>