fix: title case campaign product names

backend/services/campaignFormatter.js

@@ -1,9 +1,19 @@
+const formatProductNameForDisplay = (name) => {
+    return String(name || '')
+        .toLocaleLowerCase('pt-BR')
+        .replace(/(^|[\s/-])(\p{L})/gu, (_, separator, letter) => {
+            return `${separator}${letter.toLocaleUpperCase('pt-BR')}`;
+        });
+};
+
 const formatProductList = (productNames) => {
-    if (productNames.length <= 2) {
-        return productNames.join(' e ');
+    const displayNames = productNames.map(formatProductNameForDisplay);
+
+    if (displayNames.length <= 2) {
+        return displayNames.join(' e ');
     }
 
-    return `${productNames.slice(0, -1).join(', ')} e ${productNames[productNames.length - 1]}`;
+    return `${displayNames.slice(0, -1).join(', ')} e ${displayNames[displayNames.length - 1]}`;
 };
 
 const groupCampaignRowsByBaseProduct = (rows) => {
@@ -23,7 +33,7 @@ const mapCampaignProducts = (groups) => {
             const sortedItems = [...items].sort((a, b) => String(a.nome).localeCompare(String(b.nome), 'pt-BR'));
 
             return {
-                baseProduct: baseProductName,
+                baseProduct: formatProductNameForDisplay(baseProductName),
                 total_delta: sortedItems.reduce((sum, item) => sum + Number(item.delta_estoque || 0), 0),
                 sizes: sortedItems.map(item => ({
                     id: item.produto_id,
@@ -85,6 +95,7 @@ const groupCampaignRows = (rows) => {
 
 module.exports = {
     buildWhatsappCampaignPayload,
+    formatProductNameForDisplay,
     formatProductList,
     groupCampaignRows,
     groupCampaignRowsByBaseProduct,