feat: 初始提交

src/web/pages/404/index.tsx

@@ -0,0 +1,22 @@
+import { useNavigate } from "react-router";
+import { ErrorCircleIcon } from "tdesign-icons-react";
+import { Button, Space } from "tdesign-react";
+
+export function NotFoundPage() {
+  const navigate = useNavigate();
+
+  const handleGoHome = () => {
+    void navigate("/");
+  };
+
+  return (
+    <Space align="center" className="not-found-page" direction="vertical" size="large">
+      <ErrorCircleIcon className="not-found-icon" size="64px" />
+      <h1>404</h1>
+      <p>您访问的页面不存在</p>
+      <Button onClick={handleGoHome} theme="primary">
+        返回首页
+      </Button>
+    </Space>
+  );
+}