feat: allow admin to order licenses and query all partner end customers

shop/app/order/page.tsx

@@ -1,4 +1,5 @@
 import { createClient } from '@/lib/supabase/server'
+import { createAdminClient } from '@/lib/supabase/admin'
 import { getProducts, getCategories } from '@/lib/actions/products'
 import { getEndCustomers } from '@/lib/actions/end-customers'
 import { OrderWizard } from '@/components/order-wizard'
@@ -41,13 +42,25 @@ async function OrderDataWrapper() {
     .eq('id', user.id)
     .single()
 
-  if (userData?.role === 'admin') {
-    redirect('/admin/einstellungen')
-  }
-
   const products = await getProducts().catch(() => [])
   const categories = await getCategories().catch(() => [])
-  const endCustomers = await getEndCustomers().catch(() => [])
+  
+  // Admin sees all end customers across partners
+  let endCustomers = []
+  if (userData?.role === 'admin') {
+    try {
+      const adminClient = createAdminClient()
+      const { data } = await adminClient
+        .from('end_customers')
+        .select('*')
+        .order('company_name', { ascending: true })
+      endCustomers = data || []
+    } catch (e) {
+      console.error('Fehler beim Laden aller Endkunden für Admin:', e)
+    }
+  } else {
+    endCustomers = await getEndCustomers().catch(() => [])
+  }
 
   // Fetch profile safely using maybeSingle
   let profile = null

shop/components/login-form.tsx

@@ -35,10 +35,12 @@ export function LoginForm({
 
     try {
       const res = await signIn(email, password);
-      if (res.role === "admin") {
+      if (nextParam) {
+        router.push(nextParam);
+      } else if (res.role === "admin") {
         router.push("/admin/einstellungen");
       } else {
-        router.push(nextParam || "/my-customers");
+        router.push("/my-customers");
       }
     } catch (error: unknown) {
       setError(error instanceof Error ? error.message : "An error occurred");