style: Update warning title for unassigned users

shop/app/admin/companies/[id]/customers/page.tsx

@@ -3,19 +3,19 @@
 import { useState, useEffect } from 'react'
 import { useParams, useRouter } from 'next/navigation'
 import Link from 'next/link'
-import { 
-  Building2, 
-  Plus, 
-  Trash2, 
-  Loader2, 
-  Pencil, 
-  ArrowLeft, 
-  Search, 
-  MapPin, 
-  User, 
+import {
+  Building2,
+  Plus,
+  Trash2,
+  Loader2,
+  Pencil,
+  ArrowLeft,
+  Search,
+  MapPin,
+  User,
   Users,
-  Briefcase, 
-  AlertCircle 
+  Briefcase,
+  AlertCircle
 } from 'lucide-react'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
@@ -52,7 +52,7 @@ export default function CompanyCustomersPage() {
   // Dialog State
   const [isOpen, setIsOpen] = useState(false)
   const [editingCustomer, setEditingCustomer] = useState<any>(null)
-  
+
   // Form State
   const [companyName, setCompanyName] = useState('')
   const [firstName, setFirstName] = useState('')
@@ -164,8 +164,8 @@ export default function CompanyCustomersPage() {
     <div className="p-6 max-w-5xl mx-auto text-slate-900 dark:text-white space-y-8">
       {/* Back Link */}
       <div>
-        <Link 
-          href="/admin/companies" 
+        <Link
+          href="/admin/companies"
           className="inline-flex items-center gap-2 text-sm font-semibold text-slate-500 hover:text-slate-900 dark:text-slate-400 dark:hover:text-white transition-colors"
         >
           <ArrowLeft className="w-4 h-4" />
@@ -199,7 +199,7 @@ export default function CompanyCustomersPage() {
         <div className="p-4 bg-amber-50 dark:bg-amber-950/20 border border-amber-200 dark:border-amber-900/30 rounded-xl flex gap-3 text-amber-800 dark:text-amber-300 text-sm">
           <AlertCircle className="w-5 h-5 shrink-0 text-amber-600 dark:text-amber-400" />
           <div>
-            <p className="font-semibold">Keine Partner vorhanden</p>
+            <p className="font-semibold">Keine Benutzer zugewiesen</p>
             <p className="mt-1">
               Diese Firma hat aktuell keine zugewiesenen Partner (Benutzer mit der Rolle &quot;partner&quot;).
               Sie müssen zuerst in der <Link href="/admin/users" className="underline font-semibold hover:text-amber-900 dark:hover:text-amber-200">Benutzerverwaltung</Link> Partner erstellen und dieser Firma zuweisen, um Endkunden anzulegen.