fix:bug

frontend/app/(main)/layout.tsx

@@ -0,0 +1,16 @@
+import { AppSidebar } from "@/components/app-sidebar";
+import { Toaster } from "sonner";
+
+export default function MainLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="flex h-screen overflow-hidden">
+      <AppSidebar />
+      <main className="flex-1 overflow-auto bg-background">{children}</main>
+      <Toaster position="top-right" richColors closeButton />
+    </div>
+  );
+}