refactor: remove obsolete member management API module

apps/web/app/[locale]/home/[account]/courses/page.tsx

@@ -52,13 +52,13 @@ export default async function CoursesPage({ params, searchParams }: PageProps) {
   const page = Number(search.page) || 1;
 
   const [courses, stats] = await Promise.all([
-    api.listCourses(acct.id, {
+    api.courses.list(acct.id, {
       search: search.q as string,
       status: search.status as string,
       page,
       pageSize: PAGE_SIZE,
     }),
-    api.getStatistics(acct.id),
+    api.statistics.getQuickStats(acct.id),
   ]);
 
   const totalPages = Math.ceil(courses.total / PAGE_SIZE);