Function toggleSection

src/components/WikiTreeView.tsx:54–65

(sectionId: string, event: React.MouseEvent)

  );

  const toggleSection = (sectionId: string, event: React.MouseEvent) => {
    event.stopPropagation();
    setExpandedSections(prev => {
      const newSet = new Set(prev);
      if (newSet.has(sectionId)) {
        newSet.delete(sectionId);
      } else {
        newSet.add(sectionId);
      }
      return newSet;
    });
  };

  const renderSection = (sectionId: string, level = 0) => {
    const section = wikiStructure.sections.find(s => s.id === sectionId);