see comments

src/app/(main)/settings/business/page.tsx

@@ -1,10 +1,8 @@
 import { Suspense } from "react";
-import { requireManager } from "@/src/lib/auth/getUser";
 import SettingsBusinessPageView from "@/src/modules/settings/ui/views/settings-business-page-view";
 import SettingsLoading from "../loading";
 
-export default async function SettingsBusinessPage() {
-  await requireManager();
+export default function SettingsBusinessPage() {
   return (
     <Suspense fallback={<SettingsLoading />}>
       <SettingsBusinessPageView />

src/app/(main)/settings/personal/page.tsx

@@ -1,10 +1,8 @@
 import { Suspense } from "react";
-import { requireAuthWithData } from "@/src/lib/auth/getUser";
 import SettingsPersonalPageView from "@/src/modules/settings/ui/views/settings-personal-page-view";
 import SettingsLoading from "../loading";
 
-export default async function SettingsPersonalPage() {
-  await requireAuthWithData();
+export default function SettingsPersonalPage() {
   return (
     <Suspense fallback={<SettingsLoading />}>
       <SettingsPersonalPageView />

src/modules/courses/hooks/useDeleteCourse.ts

@@ -4,7 +4,7 @@ import { deleteCourse } from "../actions/course-actions";
 import { toast } from "sonner";
 
 interface UseDeleteCourseOptions {
-  onSuccess?: () => void;
+  onSuccess?: (deletedId: string) => void;
 }
 
 export function useDeleteCourse({ onSuccess }: UseDeleteCourseOptions = {}) {
@@ -27,8 +27,9 @@ export function useDeleteCourse({ onSuccess }: UseDeleteCourseOptions = {}) {
 
     if (result.success) {
       toast.success(result.message);
+      const deletedId = courseToDelete.id;
       setCourseToDelete(null);
-      onSuccess?.();
+      onSuccess?.(deletedId);
     } else {
       setCourseToDelete(null);
       toast.error(result.error || "Fehler beim Löschen des Kurses");

src/modules/courses/ui/views/course-list-view.tsx

@@ -87,7 +87,10 @@ const CourseListView = ({
     handleDeleteClick,
     handleDeleteConfirm,
   } = useDeleteCourse({
-    onSuccess: () => router.refresh(),
+    onSuccess: (deletedId) => {
+      setCourses((prev) => prev.filter((c) => c.id !== deletedId));
+      router.refresh();
+    },
   });
 
   const loadCourses = async (options: { dateFrom: Date; dateTo: Date }) => {