diff --git a/nc-wizard-directories.js b/nc-wizard-directories.js
index 268992d..6b87862 100644
--- a/nc-wizard-directories.js
+++ b/nc-wizard-directories.js
@@ -1,101 +1,88 @@
 (function(){
   'use strict';
 
-  var submit=document.querySelector('button[name="bratonien_tool"][value="nc_connector_wizard_save_mounts"]');
-  if(!submit)return;
-
   var script=document.currentScript;
   if(!script)return;
   var endpoint=new URL('nc-wizard-directories.php',script.src).toString();
 
-  function optionElement(value,label){
-    var option=document.createElement('option');
-    option.value=value;
-    option.textContent=label;
-    return option;
+  function fetchListing(path){
+    return fetch(endpoint+'?path='+encodeURIComponent(path||''),{credentials:'same-origin',cache:'no-store'})
+      .then(function(response){return response.json().then(function(data){if(!response.ok||data.state!=='ok')throw new Error(data.message||('HTTP '+response.status));return data;});});
   }
 
-  function addRow(container,index,options,value){
-    var row=document.createElement('div');
-    row.style.display='flex';
-    row.style.gap='.6rem';
-    row.style.alignItems='center';
-    row.style.margin='.4rem 0';
-
-    var select=document.createElement('select');
-    select.name='nc_wizard_directory['+index+'][]';
-    select.style.flex='1 1 auto';
-    Object.keys(options).forEach(function(key){select.appendChild(optionElement(key,options[key]));});
-    select.value=value||'';
-
-    var remove=document.createElement('button');
-    remove.type='button';
-    remove.className='buttonLike';
-    remove.textContent='Entfernen';
-    remove.addEventListener('click',function(){row.remove();});
-
-    row.appendChild(select);
-    row.appendChild(remove);
-    container.appendChild(row);
-  }
-
-  function enhance(data){
-    if(!data||data.state!=='ok'||!data.ready||!Array.isArray(data.storages)||!data.storages.length)return;
+  function makeButton(text,handler){var b=document.createElement('button');b.type='button';b.className='buttonLike';b.textContent=text;b.addEventListener('click',handler);return b;}
 
+  function enhanceMountForm(){
+    var submit=document.querySelector('button[name="bratonien_tool"][value="nc_connector_wizard_save_mounts"]');
+    if(!submit)return;
     var form=submit.closest('form');
     if(!form||form.dataset.directoryEnhanced==='1')return;
-    form.dataset.directoryEnhanced='1';
 
-    var dialog=document.getElementById('bratonien-nc-wizard-dialog');
-    if(dialog){
-      dialog.querySelectorAll('p.bratonien-base-note').forEach(function(paragraph){
-        if(paragraph.textContent.indexOf('Der Assistent verwendet den Zugang aus dem ersten Schritt')!==-1){
-          paragraph.innerHTML='<strong>Nextcloud wurde gefunden.</strong> Die vorhandene Reader-Verbindung wurde automatisch erkannt und erfolgreich für den Datenzugriff verwendet.';
-        }
-      });
-    }
+    fetchListing('').then(function(root){
+      if(!root.ready)return;
+      form.dataset.directoryEnhanced='1';
+      var oldGrid=form.querySelector('.bratonien-form-grid');
+      if(!oldGrid)return;
+      oldGrid.querySelectorAll('input[type="hidden"][name^="nc_wizard_storage_mount"]').forEach(function(input){form.appendChild(input);});
 
-    var note=form.previousElementSibling;
-    var heading=note&&note.previousElementSibling;
-    if(heading&&/^H[1-6]$/.test(heading.tagName))heading.textContent='Verzeichnisse auswählen';
-    if(note&&note.tagName==='P')note.textContent='Wähle die Verzeichnisse aus, die berücksichtigt werden sollen. Du kannst mehrere hinzufügen oder wieder entfernen. Bleibt die Liste leer, wird automatisch das Stammverzeichnis verwendet.';
+      var note=form.previousElementSibling;
+      var heading=note&&note.previousElementSibling;
+      if(heading&&/^H[1-6]$/.test(heading.tagName))heading.textContent='Verzeichnisse auswählen';
+      if(note&&note.tagName==='P')note.textContent='Es werden ausschließlich Verzeichnisse des angemeldeten Nextcloud-Benutzers angezeigt. Keine Auswahl bedeutet Stammverzeichnis.';
 
-    var oldGrid=form.querySelector('.bratonien-form-grid');
-    if(!oldGrid)return;
-    oldGrid.querySelectorAll('input[type="hidden"][name^="nc_wizard_storage_mount"]').forEach(function(input){form.appendChild(input);});
+      var wrapper=document.createElement('div');
+      var selected=document.createElement('div');
+      var browser=document.createElement('div');
+      browser.style.marginTop='.8rem';
+      var chosen=[];
 
-    var wrapper=document.createElement('div');
-    wrapper.className='bratonien-form-grid';
+      function renderSelected(){
+        selected.innerHTML='';
+        if(!chosen.length){var empty=document.createElement('p');empty.className='bratonien-base-note';empty.textContent='Keine Auswahl – Stammverzeichnis wird verwendet.';selected.appendChild(empty);}
+        chosen.forEach(function(path,index){
+          var row=document.createElement('div');row.style.display='flex';row.style.gap='.6rem';row.style.alignItems='center';row.style.margin='.35rem 0';
+          var strong=document.createElement('strong');strong.style.flex='1';strong.textContent=path||'Stammverzeichnis';
+          var hidden=document.createElement('input');hidden.type='hidden';hidden.name='nc_wizard_directory[0][]';hidden.value=path;
+          row.appendChild(strong);row.appendChild(hidden);row.appendChild(makeButton('Entfernen',function(){chosen.splice(index,1);renderSelected();}));selected.appendChild(row);
+        });
+      }
 
-    data.storages.forEach(function(storage){
-      var label=document.createElement('span');
-      label.className='bratonien-label';
-      label.textContent=data.storages.length>1?'Speicher '+(storage.index+1):'Verzeichnisse';
+      function browse(path){
+        fetchListing(path).then(function(data){
+          browser.innerHTML='';
+          var title=document.createElement('p');var strong=document.createElement('strong');strong.textContent='Aktuell: ';title.appendChild(strong);title.appendChild(document.createTextNode('/'+(data.current||'')));browser.appendChild(title);
+          var actions=document.createElement('div');actions.className='bratonien-actions';
+          actions.appendChild(makeButton('Diesen Ordner hinzufügen',function(){if(chosen.indexOf(data.current)===-1)chosen.push(data.current);renderSelected();}));
+          if(data.current!=='')actions.appendChild(makeButton('Eine Ebene hoch',function(){browse(data.parent||'');}));
+          browser.appendChild(actions);
+          var list=document.createElement('div');list.style.marginTop='.6rem';
+          Object.keys(data.children||{}).forEach(function(child){var b=makeButton('📁 '+data.children[child],function(){browse(child);});b.style.display='block';b.style.width='100%';b.style.textAlign='left';b.style.margin='.25rem 0';list.appendChild(b);});
+          if(!list.children.length){var p=document.createElement('p');p.className='bratonien-base-note';p.textContent='Keine Unterordner vorhanden.';list.appendChild(p);}
+          browser.appendChild(list);
+        }).catch(function(error){browser.innerHTML='';var p=document.createElement('p');p.className='bratonien-main-cache__warning';p.textContent=String(error.message||error);browser.appendChild(p);});
+      }
 
-      var area=document.createElement('div');
-      var list=document.createElement('div');
-      var options=storage.options||{'':'Stammverzeichnis'};
-      addRow(list,storage.index,options,'');
-
-      var add=document.createElement('button');
-      add.type='button';
-      add.className='buttonLike';
-      add.textContent='Verzeichnis hinzufügen';
-      add.style.marginTop='.4rem';
-      add.addEventListener('click',function(){addRow(list,storage.index,options,'');});
-
-      area.appendChild(list);
-      area.appendChild(add);
-      wrapper.appendChild(label);
-      wrapper.appendChild(area);
-    });
-
-    oldGrid.replaceWith(wrapper);
-    submit.textContent='Verzeichnisse übernehmen';
+      wrapper.appendChild(selected);wrapper.appendChild(browser);oldGrid.replaceWith(wrapper);submit.textContent='Verzeichnisse übernehmen';renderSelected();browse('');
+    }).catch(function(){});
   }
 
-  fetch(endpoint,{credentials:'same-origin',cache:'no-store'})
-    .then(function(response){if(!response.ok)throw new Error('HTTP '+response.status);return response.json();})
-    .then(enhance)
-    .catch(function(){/* Der vorhandene manuelle Speicherpfad-Dialog bleibt als sicherer Fallback bestehen. */});
+  function lockUserField(){
+    var field=document.getElementById('nc_wizard_showcase_user');
+    if(!field)return;
+    var strong=document.createElement('strong');strong.textContent=field.value||'';field.replaceWith(strong);
+  }
+
+  function addBackButton(){
+    var dialog=document.getElementById('bratonien-nc-wizard-dialog');if(!dialog||dialog.querySelector('[data-nc-wizard-back]'))return;
+    var step=0;dialog.querySelectorAll('strong').forEach(function(node){var m=node.textContent.match(/^Schritt\s+(\d+)\s+von/);if(m)step=parseInt(m[1],10);});
+    if(step<=1)return;
+    var token=dialog.querySelector('input[name="pwg_token"]');if(!token)return;
+    var form=document.createElement('form');form.method='post';form.style.display='inline-block';form.style.marginRight='.5rem';form.setAttribute('data-bratonien-wizard-form','');form.appendChild(token.cloneNode(true));
+    var b=document.createElement('button');b.type='submit';b.className='buttonLike';b.name='bratonien_tool';b.value='nc_connector_wizard_back';b.textContent='Zurück';b.setAttribute('data-nc-wizard-back','1');form.appendChild(b);
+    var reset=dialog.querySelector('button[name="bratonien_tool"][value="nc_connector_wizard_reset"]');if(reset&&reset.closest('form'))reset.closest('form').parentNode.insertBefore(form,reset.closest('form'));else dialog.appendChild(form);
+  }
+
+  enhanceMountForm();
+  lockUserField();
+  addBackButton();
 })();