fix(receipt-import): correct regex for single pack extraction to handle unit formatting

backend/src/receipt-import/receipt-import.service.ts

@@ -81,7 +81,7 @@ function inferPackageDebugFromRawName(rawName: string): {
   }
 
   // e.g. "5dl", "1,5l"
-  const singlePack = /(\d+(?:[\.,]\d+)?)\s*(ml|cl|dl|l|g|kg)\b/i.exec(normalized);
+  const singlePack = /(\d+(?:[\.,]\d+)?)\s*(ml|cl|dl|l|g|kg)\b/i.exec(normalized.replace(/([\d.,]+)(ml|cl|dl|l|g|kg)\b/i, '$1 $2'));
   if (singlePack) {
     const qty = Number.parseFloat(singlePack[1].replace(',', '.'));
     const unit = singlePack[2].toLowerCase();