feat: Hinzufügen einer Suchleiste und Import-/Export-Buttons zur Benutzer-Mindmap-Vorlage für verbesserte Benutzerinteraktion

templates/user_mindmap.html

@@ -299,6 +299,16 @@
   
   <!-- Toolbar -->
   <div class="mindmap-toolbar mb-4">
+    <!-- Suchleiste -->
+    <div class="search-container mr-2">
+      <div class="relative">
+        <input type="text" id="mindmap-search" placeholder="Knoten suchen..."
+               class="px-3 py-2 pr-10 rounded-lg text-sm border dark:bg-gray-700 dark:text-white dark:border-gray-600">
+        <button id="search-btn" class="absolute right-2 top-1/2 transform -translate-y-1/2 text-gray-500 dark:text-gray-400">
+          <i class="fas fa-search"></i>
+        </button>
+      </div>
+    </div>
     <button id="fit-btn" class="mindmap-action-btn">
       <i class="fas fa-expand"></i>
       <span>Alles anzeigen</span>
@@ -319,6 +329,14 @@
       <i class="fas fa-save"></i>
       <span>Layout speichern</span>
     </button>
+    <button id="export-btn" class="mindmap-action-btn">
+      <i class="fas fa-file-export"></i>
+      <span>Exportieren</span>
+    </button>
+    <button id="import-btn" class="mindmap-action-btn">
+      <i class="fas fa-file-import"></i>
+      <span>Importieren</span>
+    </button>
     <button id="toggle-public-mindmap-btn" class="mindmap-action-btn">
       <i class="fas fa-globe"></i>
       <span>Öffentliche Mindmap</span>