feat(rbac): RBAC-Audit abschliessen — Viewer-Sperre für alle verbleibenden Seiten (1.1.93)

Domains, Backends (inkl. ServerPanel), Backups/History und Alerts:
isViewer-Check + disabled Switches, Tooltip-wrapped Add-Buttons,
bedingte Delete/Restore-Render (Viewer → disabled Tooltip statt Popconfirm).

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

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

@@ -12,6 +12,7 @@ import ActionButtons from '../../components/ActionButtons'
 import StatusDot from '../../components/StatusDot'
 
 import apiClient, { isEnvelope } from '../../api/client'
+import { useAuthStore } from '../../stores/auth'
 
 interface Domain {
   id: number
@@ -95,6 +96,7 @@ export default function DomainsPage() {
   const { t } = useTranslation()
   const qc = useQueryClient()
   const navigate = useNavigate()
+  const isViewer = useAuthStore((s) => s.user?.role) === 'viewer'
 
   const { data, isLoading } = useQuery({
     queryKey: ['domains'],
@@ -234,6 +236,7 @@ export default function DomainsPage() {
         <Switch
           size="small"
           checked={v}
+          disabled={isViewer}
           loading={quickToggle.isPending && quickToggle.variables?.id === row.id}
           onChange={(checked) => quickToggle.mutate({ id: row.id, row, checked })}
         />
@@ -322,9 +325,11 @@ export default function DomainsPage() {
         dataSource={data ?? []}
         columns={columns}
         extraActions={
-          <Button type="primary" icon={<PlusOutlined />} onClick={openCreate}>
-            {t('domains.addDomain')}
-          </Button>
+          <Tooltip title={isViewer ? t('auth.viewerBadge') : undefined}>
+            <Button type="primary" icon={<PlusOutlined />} onClick={openCreate} disabled={isViewer}>
+              {t('domains.addDomain')}
+            </Button>
+          </Tooltip>
         }
         emptyContent={
           <EmptyState
@@ -332,9 +337,11 @@ export default function DomainsPage() {
             title={t('domains.emptyTitle')}
             description={t('domains.emptyDesc')}
             action={
-              <Button type="primary" icon={<PlusOutlined />} onClick={openCreate}>
-                {t('domains.addDomain')}
-              </Button>
+              <Tooltip title={isViewer ? t('auth.viewerBadge') : undefined}>
+                <Button type="primary" icon={<PlusOutlined />} onClick={openCreate} disabled={isViewer}>
+                  {t('domains.addDomain')}
+                </Button>
+              </Tooltip>
             }
           />
         }