Upgrade app to Next.js 16

app/root/site-settings/actions.ts

@@ -3,7 +3,7 @@
 import { MediaUsageType } from "@prisma/client";
 import { revalidatePath } from "next/cache";
 import { redirect } from "next/navigation";
-import { isRedirectError } from "next/dist/client/components/redirect";
+import { isRedirectError } from "next/dist/client/components/redirect-error";
 
 import {
   SITE_SETTINGS_DEFAULT_OG_IMAGE_FIELD_KEY,
@@ -25,9 +25,9 @@ import { removeManagedMediaFile } from "@/lib/media-storage";
 import { mediaFieldInputSchema } from "@/lib/media-validation";
 import { prisma } from "@/lib/prisma";
 
-function ensureAdmin() {
-  if (!isAdminAuthenticated()) {
-    clearAdminSessionCookie();
+async function ensureAdmin() {
+  if (!(await isAdminAuthenticated())) {
+    await clearAdminSessionCookie();
     redirect("/");
   }
 }
@@ -91,7 +91,7 @@ async function revalidateSiteSettingsPages() {
 }
 
 export async function saveSiteSettingsAction(formData: FormData) {
-  ensureAdmin();
+  await ensureAdmin();
 
   const createdMediaAssetIds: string[] = [];
   const uploadedPaths: string[] = [];