hotfix(config): import missing icons to prevent freeze

Fixes Config tab crash/freeze caused by undefined lucide-svelte icons (Check/RefreshCw/ToggleLeft/FileJson).

Author: risunCode

frontend/src/lib/ConfigTab.svelte

@@ -1,6 +1,6 @@
 <script>
   import { onMount } from 'svelte';
-  import { Plus, Search, Edit, Trash2, FolderOpen, Save, X } from 'lucide-svelte';
+  import { Plus, Search, Edit, Trash2, FolderOpen, Save, X, Check, RefreshCw, ToggleLeft, FileJson } from 'lucide-svelte';
   import { GetApps, SaveApp, DeleteApp, SelectExeFromLocalPrograms, SelectFolderFromRoaming, SelectFolderFromLocalPrograms, GetPlatformInfo } from '../../wailsjs/go/main/App.js';
   import { confirm } from './ConfirmModal.svelte';
   import { toast } from './Toast.svelte';