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

.storybook/Decorator.svelte

@@ -4,7 +4,7 @@
 
     This provides:
     - ResponsiveManager context for breakpoint tracking
-    - TooltipProvider for shadcn Tooltip components
+    - TooltipProvider for tooltip components
 -->
 <script lang="ts">
 import { createResponsiveManager } from '$shared/lib';