save table

@@ -1132,13 +1132,17 @@
                     alert("Bạn phải map customer_name (quét/select) trước khi lưu.");
                     return;
                 }
+                const tableColsPlain = {};
+                Object.keys(table_columns).forEach(key => {
+                    tableColsPlain[key] = table_columns[key];
+                });
 
                 const payload = {
                     customer_name_text: customer_name || '',
                     template_name: this.formData.template_name || this.formData.customer_name,
                     customer_name_xy: customer_coords || [],
                     fields: fields,
-                    table_columns: table_columns
+                    table_columns: tableColsPlain
                 };
 
                 try {