feat(trade): complete order on courier signed callback (v3.4.13)

When XFX route callback reports status=5 or statusName containing 签收, map to COMPLETED instead of PENDING_RECEIVE; document in v3.4.13 docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/dukang-api/src/integrations/courier/courier.service.ts

@@ -67,7 +67,7 @@ export class CourierService {
     return this.provider.parseTrackCallback(body);
   }
 
-  mapTrackStatus(status: string): CourierMappedOrderStatus | null {
-    return this.provider.mapTrackStatus(status);
+  mapTrackStatus(status: string, statusName?: string): CourierMappedOrderStatus | null {
+    return this.provider.mapTrackStatus(status, statusName);
   }
 }