feat(admin): extend wysiwyg live editor

- Add is_required and allow_multiselect category toggles

- Implement module-popover for product module assignment

- Add cascade-protected deletion for categories and products

- Add sidebar link with AdminNavLink active states

shop/app/admin/wysiwyg/page.tsx

@@ -26,8 +26,23 @@ export default async function WysiwygAdminPage() {
   )
 }
 
+import { createClient } from '@/lib/supabase/server'
+
 async function WysiwygDataWrapper() {
   const products = await getProducts().catch(() => [])
   const categories = await getCategories().catch(() => [])
-  return <WysiwygAdminClient initialProducts={products} initialCategories={categories} />
+  
+  const supabase = await createClient()
+  const { data: allModules } = await supabase
+    .from('product_modules')
+    .select('*')
+    .order('name', { ascending: true })
+
+  return (
+    <WysiwygAdminClient 
+      initialProducts={products} 
+      initialCategories={categories} 
+      allModules={allModules || []} 
+    />
+  )
 }