refactor(domains): Einstellung Standard-Nameserver entfernt, Doku angepasst (h3t)

- Spalte DomainsConfig.defaultNameServers per Migration 20261008160000 entfernt
- Feld in Einstellungen/Status (API, DTO, Typen) und Karte im Web entfernt
- Anleitungen und CHANGELOG: Nameserver kommen aus AutoDNS

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

apps/web/src/app/(portal)/modules/domains/components/RegisterTab.test.tsx

@@ -48,7 +48,6 @@ function status(over: Partial<DomainsStatus> = {}): DomainsStatus {
     configured: true,
     demoConfigured: true,
     liveConfigured: true,
-    defaultNameServers: [],
     ...over,
   };
 }

apps/web/src/app/(portal)/modules/domains/components/SettingsTab.tsx

@@ -24,8 +24,6 @@ const SECONDARY_BUTTON =
 
 /** Der Live-Kontext von AutoDNS ist in der Regel 4; das Demo-System hat keinen Vorschlag. */
 const LIVE_DEFAULT_CONTEXT = 4;
-const MIN_NAMESERVER_ROWS = 2;
-const MAX_NAMESERVER_ROWS = 6;
 
 type Message = { kind: 'ok' | 'error'; text: string };
 
@@ -349,111 +347,6 @@ function AccessCard({
   );
 }
 
-// --- Standard-Nameserver --------------------------------------------------------
-
-function padNameServers(list: string[]): string[] {
-  const rows = [...list];
-  while (rows.length < MIN_NAMESERVER_ROWS) rows.push('');
-  return rows;
-}
-
-function NameServersCard({
-  settings,
-  onSaved,
-}: {
-  settings: DomainsSettings;
-  onSaved: (s: DomainsSettings) => void;
-}) {
-  const t = useTranslations('domains.settings');
-  const errorText = useErrorText();
-  const [rows, setRows] = useState<string[]>(padNameServers(settings.defaultNameServers));
-  const [saving, setSaving] = useState(false);
-  const [message, setMessage] = useState<Message | null>(null);
-
-  useEffect(() => {
-    setRows(padNameServers(settings.defaultNameServers));
-  }, [settings.defaultNameServers]);
-
-  const cleaned = rows.map((r) => r.trim().toLowerCase()).filter((r) => r.length > 0);
-  const dirty = cleaned.join('\n') !== settings.defaultNameServers.join('\n');
-
-  const save = async () => {
-    setSaving(true);
-    setMessage(null);
-    try {
-      onSaved(await saveDomainsSettings({ defaultNameServers: cleaned }));
-      setMessage({ kind: 'ok', text: t('saved') });
-    } catch (error) {
-      setMessage({ kind: 'error', text: errorText(error) });
-    } finally {
-      setSaving(false);
-    }
-  };
-
-  return (
-    <SettingsSection
-      id="domains-nameservers"
-      title={t('nameServers.title')}
-      description={t('nameServers.description')}
-      footer={
-        <>
-          <div className="mr-auto">
-            <MessageLine message={message} />
-          </div>
-          <button
-            type="button"
-            className={PRIMARY_BUTTON}
-            disabled={saving || !dirty}
-            onClick={save}
-          >
-            {saving ? t('saving') : t('save')}
-          </button>
-        </>
-      }
-    >
-      <div className="space-y-3">
-        {rows.map((value, index) => (
-          // biome-ignore lint/suspicious/noArrayIndexKey: Zeilen sind positionsgebunden und haben keine Kennung
-          <div key={index} className="flex items-end gap-2">
-            <div className="flex-1 space-y-1">
-              <label
-                htmlFor={`domains-ns-${index}`}
-                className="text-sm font-medium text-foreground"
-              >
-                {t('nameServers.label', { number: index + 1 })}
-              </label>
-              <input
-                id={`domains-ns-${index}`}
-                type="text"
-                autoComplete="off"
-                maxLength={253}
-                placeholder={`ns${index + 1}.example.com`}
-                value={value}
-                onChange={(e) => setRows(rows.map((r, i) => (i === index ? e.target.value : r)))}
-                className={INPUT_CLASS}
-              />
-            </div>
-            {rows.length > MIN_NAMESERVER_ROWS && (
-              <button
-                type="button"
-                className={SECONDARY_BUTTON}
-                onClick={() => setRows(rows.filter((_, i) => i !== index))}
-              >
-                {t('nameServers.remove')}
-              </button>
-            )}
-          </div>
-        ))}
-        {rows.length < MAX_NAMESERVER_ROWS && (
-          <button type="button" className={SECONDARY_BUTTON} onClick={() => setRows([...rows, ''])}>
-            {t('nameServers.add')}
-          </button>
-        )}
-      </div>
-    </SettingsSection>
-  );
-}
-
 // --- Reiter ---------------------------------------------------------------------
 
 /**
@@ -503,7 +396,6 @@ export function SettingsTab({ onChanged }: { onChanged: () => void }) {
       <SystemCard settings={settings} onSaved={handleSaved} />
       <AccessCard environment="DEMO" access={settings.demo} onSaved={handleSaved} />
       <AccessCard environment="LIVE" access={settings.live} onSaved={handleSaved} />
-      <NameServersCard settings={settings} onSaved={handleSaved} />
     </div>
   );
 }

apps/web/src/app/(portal)/modules/domains/domains-page.test.tsx

@@ -70,7 +70,6 @@ function status(over: Partial<DomainsStatus> = {}): DomainsStatus {
     configured: true,
     demoConfigured: true,
     liveConfigured: false,
-    defaultNameServers: [],
     ...over,
   };
 }
@@ -80,7 +79,6 @@ function settings(over: Partial<DomainsSettings> = {}): DomainsSettings {
     environment: 'DEMO',
     demo: { user: 'api-user', hasPassword: true, context: 1 },
     live: { user: null, hasPassword: false, context: null },
-    defaultNameServers: [],
     configured: { demo: true, live: false },
     ...over,
   };
@@ -354,19 +352,11 @@ describe('Einstellungen', () => {
     expect(within(demoCard).getByText('Bitte zuerst speichern')).toBeTruthy();
   });
 
-  it('Nameserver: speichert die bereinigte Liste', async () => {
+  it('Einstellungen zeigen keine Karte "Standard-Nameserver" mehr (h3t)', async () => {
     await renderSettings();
-    const first = (await screen.findByLabelText('Nameserver 1')) as HTMLInputElement;
-    fireEvent.change(first, { target: { value: ' NS1.Example.com ' } });
-    fireEvent.change(screen.getByLabelText('Nameserver 2'), {
-      target: { value: 'ns2.example.com' },
-    });
-    const card = document.getElementById('domains-nameservers') as HTMLElement;
-    fireEvent.click(within(card).getByRole('button', { name: 'Speichern' }));
-    await waitFor(() => expect(mockSaveSettings).toHaveBeenCalledTimes(1));
-    expect(mockSaveSettings).toHaveBeenCalledWith({
-      defaultNameServers: ['ns1.example.com', 'ns2.example.com'],
-    });
+    await screen.findByRole('radio', { name: /Live-System \(kostenpflichtig\)/ });
+    expect(screen.queryByText('Standard-Nameserver')).toBeNull();
+    expect(document.getElementById('domains-nameservers')).toBeNull();
   });
 });