Preview: Admin-API und Modus-Vorgabe

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/routes/admin/services.js

@@ -51,6 +51,7 @@ router.get('/', async (_req, res) => {
         ticketId: p.ticketId || '',
         woid: tickets.get(p.ticketId)?.woid || '',
         previewUrl: previewUrlFor(p),
+        previewState: p.previewState || '',
         features: {},
       })
     }