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

src/app/ui/Layout.svelte

@@ -17,7 +17,7 @@
 import { themeManager } from '$features/ChangeAppTheme';
 import GD from '$shared/assets/GD.svg';
 import { ResponsiveProvider } from '$shared/lib';
-import { cn } from '$shared/shadcn/utils/shadcn-utils';
+import clsx from 'clsx';
 import {
     type Snippet,
     onDestroy,
@@ -78,7 +78,7 @@ onDestroy(() => themeManager.destroy());
 <ResponsiveProvider>
     <div
         id="app-root"
-        class={cn(
+        class={clsx(
             'min-h-screen w-auto flex flex-col bg-surface dark:bg-dark-bg',
             theme === 'dark' ? 'dark' : '',
         )}