fix(webhook): normalize event names to uppercase for case-insensitive matching

Saleor sends event names in lowercase (order_created) but our code
expects uppercase (ORDER_CREATED). This fix normalizes the event
name before checking supported events.

src/app/api/webhooks/saleor/route.ts

@@ -412,14 +412,17 @@ export async function POST(request: NextRequest) {
       return NextResponse.json({ error: "Missing saleor-event header" }, { status: 400 });
     }
 
-    if (!SUPPORTED_EVENTS.includes(event)) {
-      console.log(`Event ${event} not supported, skipping`);
+    // Normalize event to uppercase for comparison
+    const normalizedEvent = event.toUpperCase();
+    
+    if (!SUPPORTED_EVENTS.includes(normalizedEvent)) {
+      console.log(`Event ${event} (normalized: ${normalizedEvent}) not supported, skipping`);
       return NextResponse.json({ success: true, message: "Event not supported" });
     }
 
     const payload = body;
 
-    await handleSaleorWebhook(event, payload);
+    await handleSaleorWebhook(normalizedEvent, payload);
 
     return NextResponse.json({ success: true });
   } catch (error) {