fix: resolve customer creation fk violation and implement instant updates in admin dialogs

shop/components/admin/category-dialog.tsx

@@ -1,6 +1,7 @@
 'use client'
 
 import { useState } from 'react'
+import { useRouter } from 'next/navigation'
 import { useForm } from 'react-hook-form'
 import { zodResolver } from '@hookform/resolvers/zod'
 import * as z from 'zod'
@@ -54,6 +55,7 @@ export function CategoryDialog({
   category?: Category 
 }) {
   const [open, setOpen] = useState(false)
+  const router = useRouter()
 
   const form = useForm<CategoryFormValues>({
     resolver: zodResolver(categorySchema) as any,
@@ -75,6 +77,7 @@ export function CategoryDialog({
       }
       setOpen(false)
       form.reset()
+      router.refresh()
     } catch (error) {
       console.error('Error saving category:', error)
     }

shop/components/admin/category-list.tsx

@@ -14,12 +14,16 @@ import { Edit2, Trash2, Cloud, Utensils, HardDrive, Package, ArrowUpDown } from
 import { Button } from '@/components/ui/button'
 import { Badge } from '@/components/ui/badge'
 import { deleteCategory } from '@/lib/actions/products'
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
 import { CategoryDialog } from './category-dialog'
 
 export function CategoryList({ initialCategories }: { initialCategories: Category[] }) {
   const [categories, setCategories] = useState(initialCategories)
 
+  useEffect(() => {
+    setCategories(initialCategories)
+  }, [initialCategories])
+
   const handleDelete = async (id: string) => {
     if (confirm('Möchten Sie diese Kategorie wirklich löschen? Alle zugehörigen Produkte werden nicht mehr dieser Kategorie zugeordnet sein.')) {
       await deleteCategory(id)

shop/components/admin/create-product-dialog.tsx

@@ -1,6 +1,7 @@
 'use client'
 
 import { useState } from 'react'
+import { useRouter } from 'next/navigation'
 import { useForm, useFieldArray } from 'react-hook-form'
 import { zodResolver } from '@hookform/resolvers/zod'
 import * as z from 'zod'
@@ -60,6 +61,7 @@ type ProductFormValues = z.infer<typeof productSchema>
 
 export function CreateProductDialog({ children, categories, product }: { children?: React.ReactNode, categories: Category[], product?: Product }) {
   const [open, setOpen] = useState(false)
+  const router = useRouter()
 
   const form = useForm<ProductFormValues>({
     resolver: zodResolver(productSchema) as any,
@@ -102,6 +104,7 @@ export function CreateProductDialog({ children, categories, product }: { childre
       
       setOpen(false)
       if (!product) form.reset()
+      router.refresh()
     } catch (error) {
       console.error('Error saving product:', error)
     }

shop/components/admin/product-list.tsx

@@ -14,12 +14,16 @@ import { Badge } from '@/components/ui/badge'
 import { Edit2, Trash2, Layers } from 'lucide-react'
 import { Button } from '@/components/ui/button'
 import { deleteProduct } from '@/lib/actions/products'
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
 import { CreateProductDialog } from './create-product-dialog'
 
 export function ProductList({ initialProducts, categories }: { initialProducts: Product[], categories: Category[] }) {
   const [products, setProducts] = useState(initialProducts)
 
+  useEffect(() => {
+    setProducts(initialProducts)
+  }, [initialProducts])
+
   const handleDelete = async (id: string) => {
     if (confirm('Möchten Sie dieses Produkt wirklich löschen?')) {
       await deleteProduct(id)

shop/supabase/migrations/20260623000000_add_profiles_trigger_and_backfill.sql

@@ -0,0 +1,19 @@
+-- Trigger, um Profile automatisch bei User-Erstellung in auth.users anzulegen
+CREATE OR REPLACE FUNCTION public.handle_new_user()
+RETURNS TRIGGER AS $$
+BEGIN
+  INSERT INTO public.profiles (id)
+  VALUES (new.id)
+  ON CONFLICT (id) DO NOTHING;
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql SECURITY DEFINER;
+
+CREATE OR REPLACE TRIGGER on_auth_user_created
+  AFTER INSERT ON auth.users
+  FOR EACH ROW EXECUTE FUNCTION public.handle_new_user();
+
+-- Profile für bereits existierende Benutzer anlegen (Backfill)
+INSERT INTO public.profiles (id)
+SELECT id FROM auth.users
+ON CONFLICT (id) DO NOTHING;