Start on new sidebar (#456)

Co-authored-by: shadcn <m@shadcn.com>

app/(chat)/layout.tsx

@@ -0,0 +1,22 @@
+import { cookies } from 'next/headers';
+
+import { AppSidebar } from '@/components/custom/app-sidebar';
+import { SidebarInset, SidebarProvider } from '@/components/ui/sidebar';
+
+import { auth } from '../(auth)/auth';
+
+export default async function Layout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  const [session, cookieStore] = await Promise.all([auth(), cookies()]);
+  const isCollapsed = cookieStore.get('sidebar:state')?.value !== 'true';
+
+  return (
+    <SidebarProvider defaultOpen={!isCollapsed}>
+      <AppSidebar user={session?.user} />
+      <SidebarInset>{children}</SidebarInset>
+    </SidebarProvider>
+  );
+}