fix: remove TopBar quick-create button + canAccess fallback in ContactDetail + ContactDetailPage + ContactsList + duplicate import fix

frontend/src/components/layout/TopBar.tsx

@@ -8,7 +8,7 @@ import { useLogout } from '@/api/hooks';
 import { Avatar } from '@/components/ui/Avatar';
 import { SearchDropdown } from '@/components/shared/SearchDropdown';
 import { SuggestionBadge } from '@/components/ai/SuggestionBadge';
-import { Building, ChevronDown, Menu, Zap, Bot, Layers, Code, Plus } from 'lucide-react';
+import { Building, ChevronDown, Menu, Zap, Bot, Layers, Code } from 'lucide-react';
 import { NotificationBell } from '@/components/layout/NotificationBell';
 import { useWindowStore } from '@/store/windowStore';
 import { usePermission } from '@/hooks/usePermission';
@@ -90,18 +90,6 @@ export function TopBar() {
 
       <div className="flex items-center gap-2">
         <NotificationBell />
-        {/* Quick Create */}
-        {canAccess('contacts:write') && (
-          <button
-            onClick={() => navigate('/contacts/new')}
-            className="flex items-center gap-1.5 bg-primary-600 text-white px-3 py-1.5 rounded-md text-sm font-medium hover:bg-primary-700 min-h-touch focus:outline-none focus-visible:ring-2 focus-visible:ring-primary-500"
-            aria-label={t('topbar.quickCreate')}
-            title={t('topbar.quickCreate', 'Neuer Kontakt')}
-          >
-            <Plus className="w-4 h-4" aria-hidden="true" strokeWidth={2} />
-            <span className="hidden md:inline">{t('topbar.quickCreate', 'Neu')}</span>
-          </button>
-        )}
         {/* Minimized windows */}
         {minimizedWindows.length > 0 && (
           <div className="flex items-center gap-1.5">