changes export flow

apps/edr-freight-web/backoffice/src/components/trainBuilder/BuildTrainModal.tsx

@@ -86,6 +86,13 @@ export default function BuildTrainModal({ opened, onClose, onBuilt }: BuildTrain
   }, [opened]);
 
   const handleBuild = async () => {
+    if (!trainName.trim()) {
+      toast({
+        title: "Enter the vogue number",
+        variant: "destructive",
+      });
+      return;
+    }
     if (!yardId || locomotiveIds.length < 1) {
       toast({
         title: "Pick a yard and couple at least one locomotive",
@@ -108,7 +115,7 @@ export default function BuildTrainModal({ opened, onClose, onBuilt }: BuildTrain
         importTrainNumber: importTrainNumber.trim(),
         currentYardId: yardId,
         locomotiveIds,
-        ...(trainName.trim() ? { trainName: trainName.trim() } : {}),
+        trainName: trainName.trim(),
         ...(notes.trim() ? { notes: notes.trim() } : {}),
       });
       toast({ title: `Train ${composition.code} built` });
@@ -143,11 +150,12 @@ export default function BuildTrainModal({ opened, onClose, onBuilt }: BuildTrain
           wagons are attached on the next screen.
         </Text>
         <TextInput
-          label="Name (optional)"
-          placeholder="e.g. Fertilizer block"
+          label="Vogue number"
+          placeholder="Enter vogue number"
           value={trainName}
           onChange={(e) => setTrainName(e.currentTarget.value)}
           maxLength={100}
+          required
         />
         <Group grow>
           {/* Fixed by the import run — derived, never typed. */}