fix: 코루틴 내 트랜잭션 간 조회 안 되는 문제 해결

- 각 트랜잭션을 TransactionTemplate 블록으로 분리하여 커밋 시점 명확화
- 두 번째 트랜잭션에서 entityManager.clear() 호출로 1차 캐시 무시
- CoroutineExceptionHandler 추가로 비동기 예외 로깅 처리
- @PreDestroy 추가로 서비스 종료 시 CoroutineScope 정리

src/main/kotlin/kr/co/vividnext/sodalive/useraction/UserActionService.kt

@@ -1,7 +1,9 @@
 package kr.co.vividnext.sodalive.useraction
 
+import kotlinx.coroutines.CoroutineExceptionHandler
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
 import kr.co.vividnext.sodalive.content.order.OrderRepository
 import kr.co.vividnext.sodalive.fcm.FcmService
@@ -14,6 +16,8 @@ import org.slf4j.LoggerFactory
 import org.springframework.stereotype.Service
 import org.springframework.transaction.support.TransactionTemplate
 import java.time.LocalDateTime
+import javax.annotation.PreDestroy
+import javax.persistence.EntityManager
 
 @Service
 class UserActionService(
@@ -24,10 +28,15 @@ class UserActionService(
     private val memberPointRepository: MemberPointRepository,
     private val transactionTemplate: TransactionTemplate,
 
-    private val fcmService: FcmService
+    private val fcmService: FcmService,
+    private val entityManager: EntityManager
 ) {
 
-    private val coroutineScope = CoroutineScope(Dispatchers.IO)
+    private val coroutineScope = CoroutineScope(
+        Dispatchers.IO + CoroutineExceptionHandler { _, e ->
+            logger.error("포인트 지급 또는 알림 실패: ${e.message}")
+        }
+    )
 
     fun recordAction(
         memberId: Long,
@@ -53,6 +62,7 @@ class UserActionService(
             if (isAuth) {
                 try {
                     transactionTemplate.execute {
+                        entityManager.clear()
                         val policy = policyRepository.findByActionTypeAndIsActiveTrue(actionType, now)
                         if (policy != null) {
                             val policyType = policy.policyType
@@ -146,6 +156,11 @@ class UserActionService(
         }
     }
 
+    @PreDestroy
+    fun onDestroy() {
+        coroutineScope.cancel("UserActionService 종료")
+    }
+
     companion object {
         private val logger = LoggerFactory.getLogger(UserActionService::class.java)
     }