Remove deprecated files and templates: Delete unused files including deployment scripts, environment configurations, and various HTML templates to streamline the project structure. This cleanup enhances maintainability and reduces clutter in the codebase.

2025-04-27 14:50:20 +02:00
parent d117978005
commit edf3049e42
77 changed files with 110 additions and 552 deletions
--- a/static/js/modules/mindmap.js
+++ b/static/js/modules/mindmap.js
@@ -0,0 +1,777 @@
+/**
+ * MindMap D3.js Modul
+ * Visualisiert die Mindmap mit D3.js
+ */
+
+class MindMapVisualization {
+  constructor(containerSelector, options = {}) {
+    this.containerSelector = containerSelector;
+    this.container = d3.select(containerSelector);
+    this.width = options.width || this.container.node().clientWidth || 800;
+    this.height = options.height || 600;
+    this.nodeRadius = options.nodeRadius || 14;
+    this.selectedNodeRadius = options.selectedNodeRadius || 20;
+    this.linkDistance = options.linkDistance || 150;
+    this.chargeStrength = options.chargeStrength || -900;
+    this.centerForce = options.centerForce || 0.15;
+    this.onNodeClick = options.onNodeClick || ((node) => console.log('Node clicked:', node));
+
+    this.nodes = [];
+    this.links = [];
+    this.simulation = null;
+    this.svg = null;
+    this.linkElements = null;
+    this.nodeElements = null;
+    this.textElements = null;
+    this.tooltipEnabled = options.tooltipEnabled !== undefined ? options.tooltipEnabled : true;
+    
+    this.mouseoverNode = null;
+    this.selectedNode = null;
+    
+    this.zoomFactor = 1;
+    this.tooltipDiv = null;
+    this.isLoading = true;
+    
+    // Lade die gemerkten Knoten
+    this.bookmarkedNodes = this.loadBookmarkedNodes();
+    
+    // Sicherstellen, dass der Container bereit ist
+    if (this.container.node()) {
+      this.init();
+      this.setupDefaultNodes();
+      
+      // Sofortige Datenladung
+      window.setTimeout(() => {
+        this.loadData();
+      }, 100);
+    } else {
+      console.error('Mindmap-Container nicht gefunden:', containerSelector);
+    }
+  }
+  
+  // Standardknoten als Fallback einrichten, falls die API nicht reagiert
+  setupDefaultNodes() {
+    // Basis-Mindmap mit Hauptthemen
+    const defaultNodes = [
+      { id: "root", name: "Wissen", description: "Zentrale Wissensbasis", thought_count: 0 },
+      { id: "philosophy", name: "Philosophie", description: "Philosophisches Denken", thought_count: 0 },
+      { id: "science", name: "Wissenschaft", description: "Wissenschaftliche Erkenntnisse", thought_count: 0 },
+      { id: "technology", name: "Technologie", description: "Technologische Entwicklungen", thought_count: 0 },
+      { id: "arts", name: "Künste", description: "Künstlerische Ausdrucksformen", thought_count: 0 }
+    ];
+    
+    const defaultLinks = [
+      { source: "root", target: "philosophy" },
+      { source: "root", target: "science" },
+      { source: "root", target: "technology" },
+      { source: "root", target: "arts" }
+    ];
+    
+    // Als Fallback verwenden, falls die API fehlschlägt
+    this.defaultNodes = defaultNodes;
+    this.defaultLinks = defaultLinks;
+  }
+  
+  init() {
+    // SVG erstellen, wenn noch nicht vorhanden
+    if (!this.svg) {
+      // Container zuerst leeren
+      this.container.html('');
+      
+      this.svg = this.container
+        .append('svg')
+        .attr('width', '100%')
+        .attr('height', this.height)
+        .attr('viewBox', `0 0 ${this.width} ${this.height}`)
+        .attr('class', 'mindmap-svg')
+        .call(
+          d3.zoom()
+            .scaleExtent([0.1, 5])
+            .on('zoom', (event) => {
+              this.handleZoom(event.transform);
+            })
+        );
+      
+      // Hauptgruppe für alles, was zoom-transformierbar ist
+      this.g = this.svg.append('g');
+      
+      // Tooltip initialisieren
+      if (!d3.select('body').select('.node-tooltip').size()) {
+        this.tooltipDiv = d3.select('body')
+          .append('div')
+          .attr('class', 'node-tooltip')
+          .style('opacity', 0)
+          .style('position', 'absolute')
+          .style('pointer-events', 'none')
+          .style('background', 'rgba(20, 20, 40, 0.9)')
+          .style('color', '#ffffff')
+          .style('border', '1px solid rgba(160, 80, 255, 0.2)')
+          .style('border-radius', '6px')
+          .style('padding', '8px 12px')
+          .style('font-size', '14px')
+          .style('max-width', '250px')
+          .style('box-shadow', '0 10px 25px rgba(0, 0, 0, 0.5), 0 0 10px rgba(160, 80, 255, 0.2)');
+      } else {
+        this.tooltipDiv = d3.select('body').select('.node-tooltip');
+      }
+    }
+    
+    // Force-Simulation initialisieren
+    this.simulation = d3.forceSimulation()
+      .force('link', d3.forceLink().id(d => d.id).distance(this.linkDistance))
+      .force('charge', d3.forceManyBody().strength(this.chargeStrength))
+      .force('center', d3.forceCenter(this.width / 2, this.height / 2).strength(this.centerForce))
+      .force('collision', d3.forceCollide().radius(this.nodeRadius * 2));
+      
+    // Globale Mindmap-Instanz für externe Zugriffe setzen
+    window.mindmapInstance = this;
+  }
+  
+  handleZoom(transform) {
+    this.g.attr('transform', transform);
+    this.zoomFactor = transform.k;
+    
+    // Knotengröße anpassen, um bei Zoom lesbar zu bleiben
+    if (this.nodeElements) {
+      this.nodeElements
+        .attr('r', d => (d === this.selectedNode ? this.selectedNodeRadius : this.nodeRadius) / Math.sqrt(transform.k));
+    }
+    
+    // Textgröße anpassen
+    if (this.textElements) {
+      this.textElements
+        .style('font-size', `${12 / Math.sqrt(transform.k)}px`);
+    }
+  }
+  
+  async loadData() {
+    try {
+      // Ladeindikator anzeigen
+      this.showLoading();
+      
+      // Verwende sofort die Standarddaten für eine schnelle erste Anzeige
+      this.nodes = [...this.defaultNodes];
+      this.links = [...this.defaultLinks];
+      
+      // Visualisierung sofort aktualisieren
+      this.isLoading = false;
+      this.updateVisualization();
+      
+      // Status auf bereit setzen - don't wait for API
+      this.container.attr('data-status', 'ready');
+      
+      // API-Aufruf mit kürzerem Timeout im Hintergrund durchführen
+      try {
+        const controller = new AbortController();
+        const timeoutId = setTimeout(() => controller.abort(), 5000); // 5 Sekunden Timeout - reduced from 10
+        
+        const response = await fetch('/api/mindmap', { 
+          signal: controller.signal,
+          headers: {
+            'Cache-Control': 'no-cache', 
+            'Pragma': 'no-cache'
+          }
+        });
+        clearTimeout(timeoutId);
+        
+        if (!response.ok) {
+          console.warn(`HTTP Fehler: ${response.status}, verwende Standarddaten`);
+          return; // Keep using default data
+        }
+        
+        const data = await response.json();
+        
+        if (!data || !data.nodes || data.nodes.length === 0) {
+          console.warn('Keine Mindmap-Daten vorhanden, verwende weiterhin Standard-Daten.');
+          return; // Keep using default data
+        }
+        
+        // Flache Liste von Knoten und Verbindungen erstellen
+        this.nodes = [];
+        this.links = [];
+        this.processHierarchicalData(data.nodes);
+        
+        // Visualisierung aktualisieren mit den tatsächlichen Daten
+        this.updateVisualization();
+        
+      } catch (error) {
+        console.warn('Fehler beim Laden der Mindmap-Daten, verwende Standarddaten:', error);
+        // Already using default data, no action needed
+      }
+      
+    } catch (error) {
+      console.error('Kritischer Fehler bei der Mindmap-Darstellung:', error);
+      this.showError('Fehler beim Laden der Mindmap-Daten. Bitte laden Sie die Seite neu.');
+      this.container.attr('data-status', 'error');
+    }
+  }
+  
+  showLoading() {
+    // Element nur leeren, wenn es noch kein SVG enthält
+    if (!this.container.select('svg').size()) {
+      this.container.html(`
+        <div class="flex justify-center items-center h-full">
+          <div class="text-center">
+            <div class="animate-spin rounded-full h-16 w-16 border-t-2 border-b-2 border-primary-400 mx-auto mb-4"></div>
+            <p class="text-lg text-white">Mindmap wird geladen...</p>
+          </div>
+        </div>
+      `);
+    }
+  }
+  
+  processHierarchicalData(hierarchicalNodes, parentId = null) {
+    hierarchicalNodes.forEach(node => {
+      // Knoten hinzufügen, wenn noch nicht vorhanden
+      if (!this.nodes.find(n => n.id === node.id)) {
+        this.nodes.push({
+          id: node.id,
+          name: node.name,
+          description: node.description || '',
+          thought_count: node.thought_count || 0,
+          color: this.generateColorFromString(node.name),
+        });
+      }
+      
+      // Verbindung zum Elternknoten hinzufügen
+      if (parentId !== null) {
+        this.links.push({
+          source: parentId,
+          target: node.id
+        });
+      }
+      
+      // Rekursiv für Kindknoten aufrufen
+      if (node.children && node.children.length > 0) {
+        this.processHierarchicalData(node.children, node.id);
+      }
+    });
+  }
+  
+  generateColorFromString(str) {
+    // Erzeugt eine deterministische Farbe basierend auf dem String
+    let hash = 0;
+    for (let i = 0; i < str.length; i++) {
+      hash = str.charCodeAt(i) + ((hash << 5) - hash);
+    }
+    
+    // Verwende deterministische Farbe aus unserem Farbschema
+    const colors = [
+      '#4080ff', // primary-400
+      '#a040ff', // secondary-400
+      '#205cf5', // primary-500
+      '#8020f5', // secondary-500
+      '#1040e0', // primary-600
+      '#6010e0', // secondary-600
+    ];
+    
+    return colors[Math.abs(hash) % colors.length];
+  }
+  
+  updateVisualization() {
+    // Starte die Visualisierung nur, wenn nicht mehr im Ladezustand
+    if (this.isLoading) return;
+
+    // Container leeren, wenn Diagramm neu erstellt wird
+    if (!this.svg) {
+      this.container.html('');
+      this.init();
+    }
+
+    // Performance-Optimierung: Deaktiviere Transition während des Datenladens
+    const useTransitions = false;
+
+    // Links (Edges) erstellen
+    this.linkElements = this.g.selectAll('.link')
+      .data(this.links)
+      .join(
+        enter => enter.append('line')
+          .attr('class', 'link')
+          .attr('stroke', '#ffffff30')
+          .attr('stroke-width', 2)
+          .attr('stroke-dasharray', d => d.relation_type === 'contradicts' ? '5,5' : null)
+          .attr('marker-end', d => d.relation_type === 'builds_upon' ? 'url(#arrowhead)' : null),
+        update => update
+          .attr('stroke', '#ffffff30')
+          .attr('stroke-dasharray', d => d.relation_type === 'contradicts' ? '5,5' : null)
+          .attr('marker-end', d => d.relation_type === 'builds_upon' ? 'url(#arrowhead)' : null),
+        exit => exit.remove()
+      );
+    
+    // Pfeilspitze für gerichtete Beziehungen hinzufügen (falls noch nicht vorhanden)
+    if (!this.svg.select('defs').node()) {
+      const defs = this.svg.append('defs');
+      defs.append('marker')
+        .attr('id', 'arrowhead')
+        .attr('viewBox', '0 -5 10 10')
+        .attr('refX', 20)
+        .attr('refY', 0)
+        .attr('orient', 'auto')
+        .attr('markerWidth', 6)
+        .attr('markerHeight', 6)
+        .append('path')
+        .attr('d', 'M0,-5L10,0L0,5')
+        .attr('fill', '#ffffff50');
+    }
+    
+    // Simplified Effekte definieren, falls noch nicht vorhanden
+    if (!this.svg.select('#glow').node()) {
+      const defs = this.svg.select('defs').size() ? this.svg.select('defs') : this.svg.append('defs');
+      
+      // Glow-Effekt für Knoten
+      const filter = defs.append('filter')
+        .attr('id', 'glow')
+        .attr('x', '-50%')
+        .attr('y', '-50%')
+        .attr('width', '200%')
+        .attr('height', '200%');
+      
+      filter.append('feGaussianBlur')
+        .attr('stdDeviation', '1')
+        .attr('result', 'blur');
+        
+      filter.append('feComposite')
+        .attr('in', 'SourceGraphic')
+        .attr('in2', 'blur')
+        .attr('operator', 'over');
+      
+      // Blur-Effekt für Schatten
+      const blurFilter = defs.append('filter')
+        .attr('id', 'blur')
+        .attr('x', '-50%')
+        .attr('y', '-50%')
+        .attr('width', '200%')
+        .attr('height', '200%');
+      
+      blurFilter.append('feGaussianBlur')
+        .attr('stdDeviation', '1');
+    }
+    
+    // Knoten-Gruppe erstellen/aktualisieren
+    const nodeGroups = this.g.selectAll('.node-group')
+      .data(this.nodes)
+      .join(
+        enter => {
+          const group = enter.append('g')
+            .attr('class', 'node-group')
+            .call(d3.drag()
+              .on('start', (event, d) => this.dragStarted(event, d))
+              .on('drag', (event, d) => this.dragged(event, d))
+              .on('end', (event, d) => this.dragEnded(event, d)));
+          
+          // Hintergrundschatten für besseren Kontrast
+          group.append('circle')
+            .attr('class', 'node-shadow')
+            .attr('r', d => this.nodeRadius * 1.2)
+            .attr('fill', 'rgba(0, 0, 0, 0.3)')
+            .attr('filter', 'url(#blur)');
+          
+          // Kreis für jeden Knoten
+          group.append('circle')
+            .attr('class', d => `node ${this.isNodeBookmarked(d.id) ? 'bookmarked' : ''}`)
+            .attr('r', this.nodeRadius)
+            .attr('fill', d => d.color || this.generateColorFromString(d.name))
+            .attr('stroke', d => this.isNodeBookmarked(d.id) ? '#FFD700' : '#ffffff50')
+            .attr('stroke-width', d => this.isNodeBookmarked(d.id) ? 3 : 2)
+            .attr('filter', 'url(#glow)');
+          
+          // Text-Label mit besserem Kontrast
+          group.append('text')
+            .attr('class', 'node-label')
+            .attr('dy', '0.35em')
+            .attr('text-anchor', 'middle')
+            .attr('fill', '#ffffff')
+            .attr('stroke', 'rgba(0, 0, 0, 0.4)')
+            .attr('stroke-width', '0.7px')
+            .attr('paint-order', 'stroke')
+            .style('font-size', '12px')
+            .style('font-weight', '500')
+            .style('pointer-events', 'none')
+            .text(d => d.name.length > 12 ? d.name.slice(0, 10) + '...' : d.name);
+          
+          // Interaktivität hinzufügen
+          group
+            .on('mouseover', (event, d) => this.nodeMouseover(event, d))
+            .on('mouseout', (event, d) => this.nodeMouseout(event, d))
+            .on('click', (event, d) => this.nodeClicked(event, d));
+          
+          return group;
+        },
+        update => {
+          // Knoten aktualisieren
+          update.select('.node')
+            .attr('class', d => `node ${this.isNodeBookmarked(d.id) ? 'bookmarked' : ''}`)
+            .attr('fill', d => d.color || this.generateColorFromString(d.name))
+            .attr('stroke', d => this.isNodeBookmarked(d.id) ? '#FFD700' : '#ffffff50')
+            .attr('stroke-width', d => this.isNodeBookmarked(d.id) ? 3 : 2);
+          
+          // Text aktualisieren
+          update.select('.node-label')
+            .text(d => d.name.length > 12 ? d.name.slice(0, 10) + '...' : d.name);
+            
+          return update;
+        },
+        exit => exit.remove()
+      );
+    
+    // Einzelne Elemente für direkten Zugriff speichern
+    this.nodeElements = this.g.selectAll('.node');
+    this.textElements = this.g.selectAll('.node-label');
+    
+    // Performance-Optimierung: Weniger Simulationsschritte für schnellere Stabilisierung
+    this.simulation
+      .nodes(this.nodes)
+      .on('tick', () => this.ticked())
+      .alpha(0.3) // Reduzierter Wert für schnellere Stabilisierung
+      .alphaDecay(0.05); // Erhöhter Wert für schnellere Stabilisierung
+    
+    this.simulation.force('link')
+      .links(this.links);
+    
+    // Simulation neu starten
+    this.simulation.restart();
+
+    // Update connection counts
+    this.updateConnectionCounts();
+  }
+  
+  ticked() {
+    // Linienpositionen aktualisieren
+    this.linkElements
+      .attr('x1', d => d.source.x)
+      .attr('y1', d => d.source.y)
+      .attr('x2', d => d.target.x)
+      .attr('y2', d => d.target.y);
+    
+    // Knotenpositionen aktualisieren
+    this.g.selectAll('.node-group')
+      .attr('transform', d => `translate(${d.x}, ${d.y})`);
+  }
+  
+  dragStarted(event, d) {
+    if (!event.active) this.simulation.alphaTarget(0.3).restart();
+    d.fx = d.x;
+    d.fy = d.y;
+  }
+  
+  dragged(event, d) {
+    d.fx = event.x;
+    d.fy = event.y;
+  }
+  
+  dragEnded(event, d) {
+    if (!event.active) this.simulation.alphaTarget(0);
+    d.fx = null;
+    d.fy = null;
+  }
+  
+  nodeMouseover(event, d) {
+    this.mouseoverNode = d;
+    
+    // Tooltip anzeigen
+    if (this.tooltipEnabled) {
+      const isBookmarked = this.isNodeBookmarked(d.id);
+      const tooltipContent = `
+        <div class="p-2">
+          <strong>${d.name}</strong>
+          ${d.description ? `<p class="text-sm text-gray-200 mt-1">${d.description}</p>` : ''}
+          <div class="text-xs text-gray-300 mt-1">
+            Gedanken: ${d.thought_count}
+          </div>
+          <div class="mt-2">
+            <button id="bookmark-button" class="px-2 py-1 text-xs rounded bg-gray-700 hover:bg-gray-600 text-white" 
+                    data-nodeid="${d.id}">
+              ${isBookmarked ? '<i class="fas fa-bookmark mr-1"></i> Gemerkt' : '<i class="far fa-bookmark mr-1"></i> Merken'}
+            </button>
+          </div>
+        </div>
+      `;
+      
+      this.tooltipDiv
+        .html(tooltipContent)
+        .style('left', (event.pageX + 10) + 'px')
+        .style('top', (event.pageY - 10) + 'px')
+        .transition()
+        .duration(200)
+        .style('opacity', 1);
+      
+      // Event-Listener für den Bookmark-Button hinzufügen
+      document.getElementById('bookmark-button').addEventListener('click', (e) => {
+        e.stopPropagation();
+        const nodeId = e.currentTarget.getAttribute('data-nodeid');
+        const isNowBookmarked = this.toggleBookmark(nodeId);
+        
+        // Button-Text aktualisieren
+        if (isNowBookmarked) {
+          e.currentTarget.innerHTML = '<i class="fas fa-bookmark mr-1"></i> Gemerkt';
+        } else {
+          e.currentTarget.innerHTML = '<i class="far fa-bookmark mr-1"></i> Merken';
+        }
+      });
+    }
+    
+    // Knoten visuell hervorheben
+    d3.select(event.currentTarget).select('circle')
+      .transition()
+      .duration(200)
+      .attr('r', this.nodeRadius * 1.2)
+      .attr('stroke', this.isNodeBookmarked(d.id) ? '#FFD700' : '#ffffff');
+  }
+  
+  nodeMouseout(event, d) {
+    this.mouseoverNode = null;
+    
+    // Tooltip ausblenden
+    if (this.tooltipEnabled) {
+      this.tooltipDiv
+        .transition()
+        .duration(200)
+        .style('opacity', 0);
+    }
+    
+    // Knoten-Stil zurücksetzen, wenn nicht ausgewählt
+    const nodeElement = d3.select(event.currentTarget).select('circle');
+    if (d !== this.selectedNode) {
+      const isBookmarked = this.isNodeBookmarked(d.id);
+      nodeElement
+        .transition()
+        .duration(200)
+        .attr('r', this.nodeRadius)
+        .attr('stroke', isBookmarked ? '#FFD700' : '#ffffff50')
+        .attr('stroke-width', isBookmarked ? 3 : 2);
+    }
+  }
+  
+  nodeClicked(event, d) {
+    // Frühere Auswahl zurücksetzen
+    if (this.selectedNode && this.selectedNode !== d) {
+      this.g.selectAll('.node')
+        .filter(n => n === this.selectedNode)
+        .transition()
+        .duration(200)
+        .attr('r', this.nodeRadius)
+        .attr('stroke', '#ffffff50');
+    }
+    
+    // Neue Auswahl hervorheben
+    if (this.selectedNode !== d) {
+      this.selectedNode = d;
+      d3.select(event.currentTarget).select('circle')
+        .transition()
+        .duration(200)
+        .attr('r', this.selectedNodeRadius)
+        .attr('stroke', '#ffffff');
+    }
+    
+    // Callback mit Node-Daten aufrufen
+    this.onNodeClick(d);
+  }
+  
+  showError(message) {
+    this.container.html(`
+      <div class="w-full text-center p-6">
+        <div class="mb-4 text-red-500">
+          <i class="fas fa-exclamation-triangle text-4xl"></i>
+        </div>
+        <p class="text-lg text-gray-200">${message}</p>
+      </div>
+    `);
+  }
+  
+  // Fokussiert die Ansicht auf einen bestimmten Knoten
+  focusNode(nodeId) {
+    const node = this.nodes.find(n => n.id === nodeId);
+    if (!node) return;
+    
+    // Simuliere einen Klick auf den Knoten
+    const nodeElement = this.g.selectAll('.node-group')
+      .filter(d => d.id === nodeId);
+    
+    nodeElement.dispatch('click');
+    
+    // Zentriere den Knoten in der Ansicht
+    const transform = d3.zoomIdentity
+      .translate(this.width / 2, this.height / 2)
+      .scale(1.2)
+      .translate(-node.x, -node.y);
+    
+    this.svg.transition()
+      .duration(750)
+      .call(
+        d3.zoom().transform,
+        transform
+      );
+  }
+  
+  // Filtert die Mindmap basierend auf einem Suchbegriff
+  filterBySearchTerm(searchTerm) {
+    if (!searchTerm || searchTerm.trim() === '') {
+      // Alle Knoten anzeigen
+      this.g.selectAll('.node-group')
+        .style('opacity', 1)
+        .style('pointer-events', 'all');
+      
+      this.g.selectAll('.link')
+        .style('opacity', 1);
+      
+      return;
+    }
+    
+    const searchLower = searchTerm.toLowerCase();
+    const matchingNodes = this.nodes.filter(node => 
+      node.name.toLowerCase().includes(searchLower) ||
+      (node.description && node.description.toLowerCase().includes(searchLower))
+    );
+    
+    const matchingNodeIds = new Set(matchingNodes.map(n => n.id));
+    
+    // Passende Knoten hervorheben, andere ausblenden
+    this.g.selectAll('.node-group')
+      .style('opacity', d => matchingNodeIds.has(d.id) ? 1 : 0.2)
+      .style('pointer-events', d => matchingNodeIds.has(d.id) ? 'all' : 'none');
+    
+    // Verbindungen zwischen passenden Knoten hervorheben
+    this.g.selectAll('.link')
+      .style('opacity', d => 
+        matchingNodeIds.has(d.source.id) && matchingNodeIds.has(d.target.id) ? 1 : 0.1
+      );
+    
+    // Auf den ersten passenden Knoten fokussieren, wenn vorhanden
+    if (matchingNodes.length > 0) {
+      this.focusNode(matchingNodes[0].id);
+    }
+  }
+
+  /**
+   * Updates the thought_count property for each node based on existing connections
+   */
+  updateConnectionCounts() {
+    // Reset all counts first
+    this.nodes.forEach(node => {
+      // Initialize thought_count if it doesn't exist
+      if (typeof node.thought_count !== 'number') {
+        node.thought_count = 0;
+      }
+      
+      // Count connections for this node
+      const connectedNodes = this.getConnectedNodes(node);
+      node.thought_count = connectedNodes.length;
+    });
+    
+    // Update UI to show counts
+    this.updateNodeLabels();
+  }
+  
+  /**
+   * Updates the visual representation of node labels to include connection counts
+   */
+  updateNodeLabels() {
+    if (!this.textElements) return;
+    
+    this.textElements.text(d => {
+      if (d.thought_count > 0) {
+        return `${d.name} (${d.thought_count})`;
+      }
+      return d.name;
+    });
+  }
+  
+  /**
+   * Adds a new connection between nodes and updates the counts
+   */
+  addConnection(sourceNode, targetNode) {
+    if (!sourceNode || !targetNode) return false;
+    
+    // Check if connection already exists
+    if (this.isConnected(sourceNode, targetNode)) return false;
+    
+    // Add new connection
+    this.links.push({
+      source: sourceNode.id,
+      target: targetNode.id
+    });
+    
+    // Update counts
+    this.updateConnectionCounts();
+    
+    // Update visualization
+    this.updateVisualization();
+    
+    return true;
+  }
+
+  // Lädt gemerkete Knoten aus dem LocalStorage
+  loadBookmarkedNodes() {
+    try {
+      const bookmarked = localStorage.getItem('bookmarkedNodes');
+      return bookmarked ? JSON.parse(bookmarked) : [];
+    } catch (error) {
+      console.error('Fehler beim Laden der gemerkten Knoten:', error);
+      return [];
+    }
+  }
+  
+  // Speichert gemerkete Knoten im LocalStorage
+  saveBookmarkedNodes() {
+    try {
+      localStorage.setItem('bookmarkedNodes', JSON.stringify(this.bookmarkedNodes));
+    } catch (error) {
+      console.error('Fehler beim Speichern der gemerkten Knoten:', error);
+    }
+  }
+  
+  // Prüft, ob ein Knoten gemerkt ist
+  isNodeBookmarked(nodeId) {
+    return this.bookmarkedNodes.includes(nodeId);
+  }
+  
+  // Merkt einen Knoten oder hebt die Markierung auf
+  toggleBookmark(nodeId) {
+    const index = this.bookmarkedNodes.indexOf(nodeId);
+    if (index === -1) {
+      // Node hinzufügen
+      this.bookmarkedNodes.push(nodeId);
+      this.updateNodeAppearance(nodeId, true);
+    } else {
+      // Node entfernen
+      this.bookmarkedNodes.splice(index, 1);
+      this.updateNodeAppearance(nodeId, false);
+    }
+    
+    // Änderungen speichern
+    this.saveBookmarkedNodes();
+    
+    // Event auslösen für andere Komponenten
+    const event = new CustomEvent('nodeBookmarkToggled', {
+      detail: { 
+        nodeId: nodeId, 
+        isBookmarked: index === -1 
+      }
+    });
+    document.dispatchEvent(event);
+    
+    return index === -1; // true wenn jetzt gemerkt, false wenn Markierung aufgehoben
+  }
+  
+  // Aktualisiert das Aussehen eines Knotens basierend auf Bookmark-Status
+  updateNodeAppearance(nodeId, isBookmarked) {
+    this.g.selectAll('.node-group')
+      .filter(d => d.id === nodeId)
+      .select('.node')
+      .classed('bookmarked', isBookmarked)
+      .attr('stroke', isBookmarked ? '#FFD700' : '#ffffff50')
+      .attr('stroke-width', isBookmarked ? 3 : 2);
+  }
+  
+  // Aktualisiert das Aussehen aller gemerkten Knoten
+  updateAllBookmarkedNodes() {
+    this.g.selectAll('.node-group')
+      .each((d) => {
+        const isBookmarked = this.isNodeBookmarked(d.id);
+        this.updateNodeAppearance(d.id, isBookmarked);
+      });
+  }
+}
+
+// Exportiere die Klasse für die Verwendung in anderen Modulen
+window.MindMapVisualization = MindMapVisualization;