feat: add full CRUD management for product categories in admin panel

shop/lib/actions/products.ts

@@ -23,9 +23,47 @@ export async function getCategories() {
     .order('name', { ascending: true })
 
   if (error) throw error
+  return data as Category[]
+}
+
+export async function createCategory(category: Omit<Category, 'id' | 'created_at'>) {
+  const supabase = await createClient()
+  const { data, error } = await supabase
+    .from('categories')
+    .insert([category])
+    .select()
+    .single()
+
+  if (error) throw error
+  revalidatePath('/admin/categories')
+  revalidatePath('/order')
   return data
 }
 
+export async function updateCategory(id: string, category: Partial<Category>) {
+  const supabase = await createClient()
+  const { error } = await supabase
+    .from('categories')
+    .update(category)
+    .eq('id', id)
+
+  if (error) throw error
+  revalidatePath('/admin/categories')
+  revalidatePath('/order')
+}
+
+export async function deleteCategory(id: string) {
+  const supabase = await createClient()
+  const { error } = await supabase
+    .from('categories')
+    .delete()
+    .eq('id', id)
+
+  if (error) throw error
+  revalidatePath('/admin/categories')
+  revalidatePath('/order')
+}
+
 export async function createProduct(product: Omit<Product, 'id' | 'created_at' | 'updated_at'>, modules: Omit<ProductModule, 'id' | 'product_id' | 'created_at'>[]) {
   const supabase = await createClient()