Fix Kalender Uhrzeit: UTC-Z korrekt nach Europe/Berlin konvertieren

frontend/src/App.jsx

@@ -1432,12 +1432,28 @@ function ChangelogModal({ user, toast, onClose, onRead }) {
 }
 function formatIcalDate(dt) {
   if (!dt) return '';
-  const clean = dt.replace('Z','');
-  const date  = clean.slice(0,8);
-  if (date.length < 8) return dt;
-  const d = date.slice(6,8), m = date.slice(4,6), y = date.slice(0,4);
-  const tm = clean.match(/T(\d{2})(\d{2})/);
-  return tm ? `${d}.${m}.${y}, ${tm[1]}:${tm[2]} Uhr` : `${d}.${m}.${y}`;
+  try {
+    const hasTime = dt.includes('T');
+    const isUTC   = dt.endsWith('Z');
+    const y = dt.slice(0,4), mo = dt.slice(4,6), d = dt.slice(6,8);
+    if (hasTime) {
+      const h = dt.slice(9,11), mi = dt.slice(11,13), s = dt.slice(13,15)||'00';
+      const iso = `${y}-${mo}-${d}T${h}:${mi}:${s}${isUTC?'Z':''}`;
+      const date = new Date(iso);
+      if (isNaN(date)) return dt;
+      return date.toLocaleString('de-DE', {
+        timeZone:'Europe/Berlin',
+        day:'2-digit', month:'2-digit', year:'numeric',
+        hour:'2-digit', minute:'2-digit'
+      }) + ' Uhr';
+    } else {
+      const date = new Date(`${y}-${mo}-${d}T12:00:00Z`);
+      if (isNaN(date)) return dt;
+      return date.toLocaleDateString('de-DE', {
+        timeZone:'Europe/Berlin', day:'2-digit', month:'2-digit', year:'numeric'
+      });
+    }
+  } catch { return dt.slice(0,10); }
 }
 
 function SearchResultItem({ item, idx, activeIdx, onNavigate, onHover }) {