Fix: doppelte SW-Registrierung entfernt, Reload bei App-Fokus; Schnellzugriff gleichgross; Kalender ohne Komma

frontend/src/App.jsx

@@ -459,7 +459,7 @@ function QuickLinksCarousel({ links }) {
   };
 
   if (pageCount <= 1) return (
-    <div style={{ display:'grid', gridTemplateColumns:`repeat(${perRow}, 1fr)`, gap, justifyItems:'center' }}>
+    <div style={{ display:'grid', gridTemplateColumns:`repeat(${perRow}, 1fr)`, gap }}>
       {links.map(l => <QuickLinkIcon key={l.id} l={l}/>)}
     </div>
   );
@@ -476,7 +476,6 @@ function QuickLinksCarousel({ links }) {
             display:'grid',
             gridTemplateColumns:`repeat(${perRow}, 1fr)`,
             gridTemplateRows:'repeat(2, auto)',
-            justifyItems:'center',
             gap, flexShrink:0, scrollSnapAlign:'start',
             width:'100%', minWidth:'100%',
           }}>
@@ -507,7 +506,7 @@ function QuickLinkIcon({ l }) {
       style={{ display:'flex', flexDirection:'column', alignItems:'center', justifyContent:'center', gap:3,
         padding:'4px 2px', background:'rgba(255,255,255,0.04)',
         border:'1px solid rgba(255,255,255,0.08)', borderRadius:10,
-        textDecoration:'none', height:48, cursor:'pointer' }}>
+        textDecoration:'none', height:48, width:'100%', boxSizing:'border-box', cursor:'pointer' }}>
       {l.icon && l.icon.startsWith('http')
         ? <img src={l.icon} alt="" style={{width:16,height:16,objectFit:'contain'}} onError={e=>e.target.style.display='none'}/>
         : <span style={{ fontSize:16 }}>{l.icon}</span>}
@@ -2381,7 +2380,7 @@ export default function App() {
   const [user,setUser]=useState(null);
   const [active,setActiveRaw]=useState('dashboard');
   const setActive = (page) => {
-    import('./main.jsx').then(m => m.reloadIfNewBuild?.()).catch(()=>{});
+    if (window.__newBuildAvailable) { window.location.reload(); return; }
     setActiveRaw(page);
   };
   const [toastMsg,setToastMsg]=useState({msg:'',type:'success'});