diff --git a/wwwroot/js/history.js b/wwwroot/js/history.js
index 9bd6a74..327f470 100644
--- a/wwwroot/js/history.js
+++ b/wwwroot/js/history.js
@@ -240,6 +240,7 @@ function _renderMessagesIntoFragment(fragment, msgs, imageMessageIds, opts) {
         if (!isToolVisible(msg.toolName)) continue;
         var toolDiv = document.createElement('div');
         toolDiv.className = 'tool-box' + (archived ? ' archived' : '');
+        toolDiv.dataset.toolName = msg.toolName;
         renderToolBoxContent(toolDiv, msg.toolName, msg.content, null, false);
         fragment.appendChild(toolDiv);
         break;
@@ -259,12 +260,17 @@ function _renderMessagesIntoFragment(fragment, msgs, imageMessageIds, opts) {
         if (msg._choiceHandled) continue;
         const prevBoxes = fragment.querySelectorAll('.tool-box');
         const lastToolBox = prevBoxes[prevBoxes.length - 1];
-        if (lastToolBox && !lastToolBox.querySelector('.tool-result')) {
-          const rd = document.createElement('div');
-          rd.className = 'tool-result' + (msg.isError ? ' tool-error' : '');
-          rd.textContent = truncate(msg.content || '', 300);
-          rd.hidden = true;
-          lastToolBox.appendChild(rd);
+        if (lastToolBox && !lastToolBox.querySelector('.tool-result') && !lastToolBox.querySelector('.todo-list')) {
+          // todo_write: nachträglich die Todo-Liste rendern (sichtbar)
+          if (lastToolBox.dataset.toolName === 'todo_write') {
+            lastToolBox.appendChild(buildTodoList(msg.content || '', msg.isError));
+          } else {
+            const rd = document.createElement('div');
+            rd.className = 'tool-result' + (msg.isError ? ' tool-error' : '');
+            rd.textContent = truncate(msg.content || '', 300);
+            rd.hidden = true;
+            lastToolBox.appendChild(rd);
+          }
         }
         continue;
       }