fix: thêm thành viên ngoài hệ thống vào Tour

backend/test-db.js

@@ -0,0 +1,14 @@
+const { PrismaClient } = require('@prisma/client');
+const prisma = new PrismaClient();
+
+async function main() {
+  const users = await prisma.user.findMany();
+  console.log('--- Users in DB ---');
+  console.log(users);
+  
+  const participants = await prisma.tourParticipant.findMany();
+  console.log('--- Tour Participants in DB ---');
+  console.log(participants);
+}
+
+main().catch(console.error).finally(() => prisma.$disconnect());