Chore: 更新框架到 React Router 7

修复迁移到 Tailwind 4 之后的样式差异
修复 404 页面的异常并调整样式
优化分页器组件的无障碍化，Span 标签替换成 Button

app/routes/app-layout.tsx

@@ -0,0 +1,16 @@
+import { Outlet } from "react-router";
+
+import Footer from "~/components/layout/footer";
+import Header from "~/components/layout/header";
+import Spinner from "~/components/layout/spinner";
+
+export default function AppLayout() {
+  return (
+    <>
+      <Spinner />
+      <Header />
+      <Outlet />
+      <Footer />
+    </>
+  );
+}