refactor(features, widgets): update ThemeManager, FontSampler, FontSearch, and SampleList

src/widgets/SampleList/ui/LayoutSwitch/LayoutSwitch.svelte

@@ -1,3 +1,7 @@
+<!--
+    Component: LayoutSwitch
+    Toggles between list and grid layout modes
+-->
 <script lang="ts">
 import { ButtonGroup } from '$shared/ui';
 import { IconButton } from '$shared/ui';
@@ -6,6 +10,9 @@ import ListIcon from '@lucide/svelte/icons/stretch-horizontal';
 import { layoutManager } from '../../model';
 
 interface Props {
+    /**
+     * CSS classes
+     */
     class?: string;
 }