fix: WebDAV in Backup-Tab, mkdirp robuster, Sync-Fehler blockieren keine Uploads

frontend/src/App.jsx

@@ -2991,9 +2991,6 @@ function AdminPanel({ toast, mobile, user, nav }) {
           <Sec title="TMDB API (KINO-FEATURE)">
             <TmdbSettings toast={toast}/>
           </Sec>
-          <Sec title="SYNOLOGY NAS / WEBDAV">
-            <WebDavSettings toast={toast}/>
-          </Sec>
         </div>
       )}
 
@@ -3031,6 +3028,9 @@ function AdminPanel({ toast, mobile, user, nav }) {
             </div>
             {file && <div style={{ color:'rgba(255,255,255,0.55)', fontSize:10, fontFamily:'monospace', marginTop:5 }}>{file.name}</div>}
           </Sec>
+          <Sec title="SYNOLOGY NAS / WEBDAV">
+            <WebDavSettings toast={toast}/>
+          </Sec>
         </div>
       )}
     </div>