Kundenseite: Kundenansicht oeffnen, letzter Login, Preview per Einmal-Link

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

src/pages/ProjectsPage.jsx

@@ -574,7 +574,7 @@ export default function ProjectsPage() {
                       <FaGlobe style={hostBusyId === project.$id ? { animation: 'spin 1s linear infinite' } : undefined} />
                     </button>
                   ) : (
-                    <PreviewLinkButton href={project.previewUrl} />
+                    <PreviewLinkButton href={project.previewUrl} subdomain={project.subdomain} />
                   )}
                   {hosted && ready && !project.archived && (
                     <button