feat: improved printing settings

js/section-types.js

@@ -250,7 +250,7 @@ const SECTION_TYPES = [
       if (!img.src || img.classList.contains('hidden')) return;
       const clone = document.createElement('img');
       clone.src = img.src;
-      clone.className = 'max-w-full max-h-48 object-contain rounded-box my-2';
+      clone.className = 'max-w-full max-h-96 object-contain rounded-box my-2';
       target.appendChild(clone);
     },
   },
@@ -357,8 +357,13 @@ export function buildSectionsFrom(sectionsData, container = sectionsContainer) {
 // mismo mecanismo que restaura un patrón guardado.
 const DEFAULT_SECTIONS = [
   { type: 'image', dataUrl: '' },
-  { type: 'title', text: {} },
-  { type: 'materials', materials: [] },
+  { 
+    type: 'group', 
+    children: [
+      { type: 'title', text: {} },
+      { type: 'materials', materials: [] },
+    ]
+  },
   {
     type: 'group',
     children: [