Get rid of custom components folder

components/chat-header.tsx

@@ -0,0 +1,57 @@
+'use client';
+
+import Link from 'next/link';
+import { useRouter } from 'next/navigation';
+import { useWindowSize } from 'usehooks-ts';
+
+import { ModelSelector } from '@/components/model-selector';
+import { SidebarToggle } from '@/components/sidebar-toggle';
+import { Button } from '@/components/ui/button';
+import { BetterTooltip } from '@/components/ui/tooltip';
+
+import { PlusIcon, VercelIcon } from './icons';
+import { useSidebar } from './ui/sidebar';
+
+export function ChatHeader({ selectedModelId }: { selectedModelId: string }) {
+  const router = useRouter();
+  const { open } = useSidebar();
+
+  const { width: windowWidth } = useWindowSize();
+
+  return (
+    <header className="flex sticky top-0 bg-background py-1.5 items-center px-2 md:px-2 gap-2">
+      <SidebarToggle />
+      {(!open || windowWidth < 768) && (
+        <BetterTooltip content="New Chat">
+          <Button
+            variant="outline"
+            className="order-2 md:order-1 md:px-2 px-2 md:h-fit ml-auto md:ml-0"
+            onClick={() => {
+              router.push('/');
+              router.refresh();
+            }}
+          >
+            <PlusIcon />
+            <span className="md:sr-only">New Chat</span>
+          </Button>
+        </BetterTooltip>
+      )}
+      <ModelSelector
+        selectedModelId={selectedModelId}
+        className="order-1 md:order-2"
+      />
+      <Button
+        className="bg-zinc-900 dark:bg-zinc-100 hover:bg-zinc-800 dark:hover:bg-zinc-200 text-zinc-50 dark:text-zinc-900 hidden md:flex py-1.5 px-2 h-fit md:h-[34px] order-4 md:ml-auto"
+        asChild
+      >
+        <Link
+          href="https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fvercel%2Fai-chatbot&env=AUTH_SECRET,OPENAI_API_KEY&envDescription=Learn%20more%20about%20how%20to%20get%20the%20API%20Keys%20for%20the%20application&envLink=https%3A%2F%2Fgithub.com%2Fvercel%2Fai-chatbot%2Fblob%2Fmain%2F.env.example&demo-title=AI%20Chatbot&demo-description=An%20Open-Source%20AI%20Chatbot%20Template%20Built%20With%20Next.js%20and%20the%20AI%20SDK%20by%20Vercel.&demo-url=https%3A%2F%2Fchat.vercel.ai&stores=%5B%7B%22type%22:%22postgres%22%7D,%7B%22type%22:%22blob%22%7D%5D"
+          target="_noblank"
+        >
+          <VercelIcon size={16} />
+          Deploy with Vercel
+        </Link>
+      </Button>
+    </header>
+  );
+}