修正：UI 優化與使用者角色分配改為單選

resources/js/Layouts/AuthenticatedLayout.tsx

@@ -348,7 +348,7 @@ export default function AuthenticatedLayout({
                     <DropdownMenuTrigger className="flex items-center gap-2 outline-none group">
                         <div className="hidden md:flex flex-col items-end mr-1">
                             <span className="text-sm font-medium text-slate-700 group-hover:text-slate-900 transition-colors">
-                                {user.name}
+                                {user.name} ({user.username})
                             </span>
                             <span className="text-xs text-slate-500">
                                 {user.role_labels?.[0] || user.roles?.[0] || '一般用戶'}

resources/js/Layouts/LandlordLayout.tsx

@@ -117,7 +117,7 @@ export default function LandlordLayout({ children, title }: LandlordLayoutProps)
                         <DropdownMenuTrigger className="flex items-center gap-2 outline-none group">
                             <div className="flex flex-col items-end mr-1">
                                 <span className="text-sm font-medium text-slate-700 group-hover:text-slate-900 transition-colors">
-                                    {user.name}
+                                    {user.name} ({user.username})
                                 </span>
                                 <span className="text-xs text-slate-500">
                                     {user.role_labels?.[0] || user.roles?.[0] || '系統管理員'}