update

components/ThemeToggle.jsx

@@ -0,0 +1,21 @@
+'use client';
+
+import { Button, Tooltip } from 'antd';
+import { SunOutlined, MoonOutlined } from '@ant-design/icons';
+import { useTheme } from '@/app/context/ThemeContext';
+
+export default function ThemeToggle() {
+  const { theme, toggleTheme } = useTheme();
+
+  return (
+    <Tooltip title={theme === 'dark' ? 'Light mode' : 'Dark mode'}>
+      <Button
+        shape="circle"
+        size="large"
+        onClick={toggleTheme}
+        aria-label="toggle theme"
+        icon={theme === 'dark' ? <SunOutlined /> : <MoonOutlined />}
+      />
+    </Tooltip>
+  );
+}