added users section in stats

frontend/src/pages/Home.jsx

@@ -267,6 +267,20 @@ const Home = () => {
                     </div>
                   </div>
                 </div>
+                
+                <div className="bg-gradient-to-br from-cyan-500/20 to-cyan-600/20 rounded-lg p-4 border border-cyan-500/30">
+                  <div className="flex items-center justify-between">
+                    <div>
+                      <p className="text-sm text-slate-300 mb-1">Benutzer</p>
+                      <p className="text-3xl font-bold text-white">{stats.users || 0}</p>
+                    </div>
+                    <div className="w-12 h-12 bg-cyan-500/20 rounded-full flex items-center justify-center">
+                      <svg className="w-6 h-6 text-cyan-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth="2" d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z" />
+                      </svg>
+                    </div>
+                  </div>
+                </div>
               </div>
             ) : (
               <p className="text-slate-400">Fehler beim Laden der Statistiken</p>