fix: Resolved technical debt - updated TODO/FIXME items: fixed UPDATE query in formproduct.cpp, corrected toDouble() in itemnumberdelegate.cpp, added ElementType enumeration, implemented composition deletion in formelementlist.cpp, updated README

gui/formelementlist.cpp

@@ -93,17 +93,20 @@ void formElementList::on_buttonDelete_released()
     dApp->Enterprise().open();
     QSqlQuery qry = QSqlQuery(dApp->Enterprise());
 
-    /*
-    if (index.parent().child(index.row(), 2).data().toInt() == 0)
+    // Check if it's a composed element (TYPE1 = 0) and delete its composition first
+    QModelIndex parentIndex = index.parent();
+    QModelIndex childIndex = model->index(index.row(), 2, parentIndex); // Obtén el índice del hijo
+    int type = childIndex.data().toInt(); // Accede al dato
+    
+    if (type == 0) // ElementType::Composed
     {
-        // TODO: borrar la composición
+        // Delete composition elements first
         if(!qry.exec(QString("DELETE FROM ELEMENTCOMPOSITION WHERE CODE = '%1';").arg(ID)))
         {
             qDebug() << "Error ejecutando el query: " << qry.lastError().text() << "\n";
             goto error;
         }
     }
-    */
 
     if(!qry.exec(QString("DELETE FROM ELEMENT WHERE CODE = '%1';").arg(ID)))
     {