fix(i18n): RemoteTargets S3/SFTP-Labels + NTP-Interface-Labels vollständig lokalisieren

RemoteTargets: alle 20+ hardkodierten Form-Labels und deutschen Hilfetexte
(S3: Endpoint/Region/Bucket/AccessKey/SecretKey/PathPrefix/HTTPS;
 SFTP: Host/Port/Username/Password/PrivateKey/RemoteDir/HostKeyFp)
sind jetzt in t()-Aufrufen mit remotes.s3.*/remotes.sftp.*-Keys.

NTP: Listen-Address-Dropdown-Labels (alle IPv4/IPv6-Interfaces, Loopback)
verwenden jetzt dns.settings.allIPv4/allIPv6/loopback (identisch zu DNS-Settings).
NTP-Pool-Adresse-Placeholder → t('ntp.pool.addressPlaceholder').

en/de: alle neuen Keys ergänzt.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

management-ui/src/pages/NTP/index.tsx

@@ -303,7 +303,7 @@ function PoolsTab() {
           </Form.Item>
           <Form.Item label={t('ntp.pool.address')} name="address" rules={[{ required: true }]}
                      extra={t('ntp.pool.addressExtra')}>
-            <Input placeholder="0.de.pool.ntp.org oder 10.0.0.10" />
+            <Input placeholder={t('ntp.pool.addressPlaceholder')} />
           </Form.Item>
           <Space>
             <Form.Item label={t('ntp.pool.iburst')} name="iburst" valuePropName="checked">
@@ -341,10 +341,10 @@ function SettingsTab() {
   const [form] = Form.useForm<SettingsForm>()
 
   const ipOptions: { value: string; label: string }[] = [
-    { value: '0.0.0.0',   label: '0.0.0.0 — alle IPv4-Interfaces' },
-    { value: '::',        label: ':: — alle IPv6-Interfaces' },
-    { value: '127.0.0.1', label: '127.0.0.1 — Loopback IPv4' },
-    { value: '::1',       label: '::1 — Loopback IPv6' },
+    { value: '0.0.0.0',   label: `0.0.0.0 — ${t('dns.settings.allIPv4')}` },
+    { value: '::',        label: `:: — ${t('dns.settings.allIPv6')}` },
+    { value: '127.0.0.1', label: `127.0.0.1 — ${t('dns.settings.loopback')} IPv4` },
+    { value: '::1',       label: `::1 — ${t('dns.settings.loopback')} IPv6` },
   ]
   for (const i of sys ?? []) {
     if (i.ifname === 'lo') continue