docs: add direct smoke script example

README.md

@@ -187,6 +187,14 @@ npm run test:e2e:smoke -- --project="Public Smoke"
 npm run test:e2e:smoke -- --project="Admin Smoke"
 ```
 
+배포 직후 공용/관리자 응답만 빠르게 확인할 때는 smoke 스크립트를 직접 실행합니다.
+
+```bash
+ROOT_URL="https://www.taxbaik.com/" \
+ADMIN_URL="https://www.taxbaik.com/taxbaik/admin/login" \
+bash ./scripts/taxbaik-smoke.sh
+```
+
 ---
 
 ## 개발 지침