feat: add guide page

src/router/index.tsx

@@ -0,0 +1,34 @@
+import { createBrowserRouter } from "react-router-dom"
+import App from "@/App"
+import ErrorPage from "@/components/error-page"
+import HomePage from "@/page/home"
+import AboutPage from "@/page/about"
+import ContactPage from "@/page/contact"
+
+/**
+ * Main application router configuration using React Router v6.
+ * Defines all routes and their corresponding components.
+ */
+const router = createBrowserRouter([
+  {
+    path: "/",
+    element: <App />,
+    errorElement: <ErrorPage />,
+    children: [
+      {
+        index: true,
+        element: <HomePage />,
+      },
+      {
+        path: "about",
+        element: <AboutPage />,
+      },
+      {
+        path: "contact",
+        element: <ContactPage />,
+      },
+    ],
+  },
+])
+
+export default router