chore: purge shadcn from codebase. Replace with bits-ui components and other tools

src/widgets/ComparisonView/ui/Header/Header.svelte

@@ -5,7 +5,6 @@
 <script lang="ts">
 import { ThemeSwitch } from '$features/ChangeAppTheme';
 import type { ResponsiveManager } from '$shared/lib';
-import { cn } from '$shared/shadcn/utils/shadcn-utils';
 import {
     Badge,
     Divider,
@@ -17,6 +16,7 @@ import {
 } from '$shared/ui';
 import PanelLeftClose from '@lucide/svelte/icons/panel-left-close';
 import PanelLeftOpen from '@lucide/svelte/icons/panel-left-open';
+import clsx from 'clsx';
 import { getContext } from 'svelte';
 import { comparisonStore } from '../../model';
 
@@ -49,7 +49,7 @@ const fontBName = $derived(comparisonStore.fontB?.name ?? '');
 </script>
 
 <header
-    class={cn(
+    class={clsx(
         'flex items-center justify-between',
         'px-4 md:px-8 py-4 md:py-6',
         'h-16 md:h-20 z-20',