refactor(admin): rename partner to user in company assignment pages

shop/app/admin/companies/page.tsx

@@ -21,7 +21,7 @@ export default function CompaniesPage() {
   const [loading, setLoading] = useState(true)
   const [isOpen, setIsOpen] = useState(false)
   const [editingCompany, setEditingCompany] = useState<any>(null)
-  
+
   const [name, setName] = useState('')
   const [street, setStreet] = useState('')
   const [zip, setZip] = useState('')
@@ -91,7 +91,7 @@ export default function CompaniesPage() {
 
 
   const handleDelete = async (id: string, firmName: string) => {
-    if (!confirm(`Firma "${firmName}" wirklich löschen? Alle zugewiesenen Partner werden getrennt.`)) return
+    if (!confirm(`Firma "${firmName}" wirklich löschen? Alle zugewiesenen Benutzer werden getrennt.`)) return
     setDeletingId(id)
     try {
       await deleteCompany(id)
@@ -259,7 +259,7 @@ export default function CompaniesPage() {
                 className="bg-slate-50 dark:bg-white/5 border-slate-200 dark:border-white/10"
               />
             </div>
-            
+
             <div className="space-y-2">
               <Label htmlFor="company-street">Straße & Hausnummer</Label>
               <Input