Fix unused vue method

src/client/components/AppHeader.vue

@@ -63,7 +63,7 @@
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, ref, watch } from 'vue'
+import { computed, ref, watch } from 'vue'
 import api from '../api'
 import { useStore } from '../store'
 import AppDialog from './AppDialog.vue'