Add async/await to Excel generation for proper Promise handling

Author: ralyodio

src/routes/html-to-excel.js

@@ -13,7 +13,7 @@ export async function htmlToExcelHandler(c) {
     const { html, filename = 'document.xlsx', sheetName = 'Sheet1', store = false } = c.get('body');
 
     // Generate Excel spreadsheet from HTML tables
-    const excelBuffer = excelService.generateExcel(html, sheetName);
+    const excelBuffer = await excelService.generateExcel(html, sheetName);
 
     // Store the Excel file in Supabase if requested
     if (store) {