feat: implement Phase 1 LINE Message Integration (Order Created, Payment Confirmed, Shipped, Cancelled)

apps/backend/src/routes/line.ts

@@ -37,7 +37,7 @@ const webhookHandler = async ({ request, body, set }: { request: Request, body:
 
   try {
     const parsedBody = typeof body === 'string' ? JSON.parse(body) : body;
-    const events: line.WebhookEvent[] = parsedBody.events || [];
+    const events: line.webhook.Event[] = parsedBody.events || [];
 
     for (const event of events) {
       if (event.type === 'message' && event.message.type === 'text') {
@@ -48,7 +48,7 @@ const webhookHandler = async ({ request, body, set }: { request: Request, body:
 
         // Simple echo bot for now
         await lineClient.replyMessage({
-          replyToken: event.replyToken,
+          replyToken: event.replyToken!,
           messages: [{
             type: 'text',
             text: `คุณส่งข้อความว่า: ${event.message.text}`