feat: better processing toast message

src/App.vue

@@ -1,9 +1,11 @@
 <script setup lang="ts">
-import {computed} from 'vue';
+import {computed, watchEffect} from 'vue';
 import {RouterView, useRoute} from 'vue-router';
 import {Sidebar} from './sidebar';
 import {ConfirmModal} from '@/confirm';
-import {ToastContainer} from '@/toast';
+import {toast, ToastContainer} from '@/toast';
+import {onActivitiesProcessed} from '@/activity';
+import {useAuthStore} from '@/auth';
 import {routeNames} from '@/routes';
 
 const route = useRoute();
@@ -11,6 +13,17 @@ const route = useRoute();
 const hideSidebar = computed(() => {
     return route.name === routeNames.callback || route.name === routeNames.about;
 });
+
+const authStore = useAuthStore();
+
+watchEffect(onCleanup => {
+    if (!authStore.isAuthenticated) {
+        return;
+    }
+    const unsubscribe = onActivitiesProcessed(() => toast.info('New activities have been processed'));
+
+    onCleanup(unsubscribe);
+});
 </script>
 
 <template>