Bump version to 1.7.8

app/MainClient.tsx

@@ -22,6 +22,8 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
   const [refreshKey, setRefreshKey] = useState(0);
   const [editEntry, setEditEntry] = useState<LogbuchEintrag | null>(null);
 
+  const grafikSrc = '/api/statistik/grafik';
+
   const version = packageJson.version;
   const buildDate =
     process.env.NEXT_PUBLIC_BUILD_DATE ||
@@ -98,7 +100,10 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
             .map((tab) => (
             <button
               key={tab}
-              onClick={() => { setActiveTab(tab); if (tab === 'eingabe') setEditEntry(null); }}
+              onClick={() => {
+                setActiveTab(tab);
+                if (tab === 'eingabe') setEditEntry(null);
+              }}
               className={`px-4 py-2 text-sm font-medium transition-colors border-b-2 -mb-px ${
                 activeTab === tab
                   ? 'border-[#85B7D7] text-gray-900'
@@ -173,14 +178,22 @@ export default function MainClient({ kuerzel, beoId, beoName, role }: Props) {
         {/* Statistik-Tab */}
         {activeTab === 'statistik' && (
           <div className="border-2 border-gray-400 rounded-xl bg-white p-3 print:border-0 print:rounded-none print:p-0">
-            <div className="flex justify-between items-center mb-2 print:hidden">
+            <div className="flex justify-between items-center mb-2 print:hidden gap-2">
               <span className="text-sm font-semibold text-gray-600">Statistik (alle Kuppeln)</span>
-              <button
-                onClick={() => window.print()}
-                className="text-sm px-3 py-1.5 bg-gray-200 hover:bg-gray-300 text-gray-700 rounded-lg"
-              >
-                🖨 Drucken
-              </button>
+              <div className="flex items-center gap-2">
+                <button
+                  onClick={() => window.print()}
+                  className="text-sm px-3 py-1.5 bg-gray-200 hover:bg-gray-300 text-gray-700 rounded-lg"
+                >
+                  🖨 Drucken
+                </button>
+                <button
+                  onClick={() => window.open(grafikSrc, '_blank')}
+                  className="text-sm px-3 py-1.5 bg-blue-600 hover:bg-blue-700 text-white rounded-lg"
+                >
+                  📊 Grafik
+                </button>
+              </div>
             </div>
             <Statistik />
           </div>