update: setup layouts and basic ui

src/app/page.tsx

@@ -0,0 +1,20 @@
+"use client";
+
+import { useRouter } from "next/navigation";
+
+const Home = () => {
+  const router = useRouter();
+  return (
+    <main className="bg-[#f1f0f2] h-screen w-full flex flex-col gap-6 items-center justify-center">
+      <h1 className="text-4xl font-bold text-zinc-800">CS 工具箱</h1>
+      <button
+        onClick={() => router.push("/home")}
+        className="px-4 py-1 rounded bg-zinc-200"
+      >
+        进入
+      </button>
+    </main>
+  );
+};
+
+export default Home;