fix(agent-assignment): 소속 크리에이터 조회 시각을 KST로 변환한다

src/main/kotlin/kr/co/vividnext/sodalive/admin/partner/agent/read/AdminAgentReadService.kt

@@ -56,9 +56,19 @@ class AdminAgentReadService(
     fun getAssignedCreators(agentId: Long, offset: Long, limit: Long): GetAdminAgentAssignedCreatorResponse {
         validateAgent(agentId)
         val now = LocalDateTime.now()
+        val items = queryRepository.getAssignedCreators(agentId = agentId, offset = offset, limit = limit, currentTime = now)
+            .map {
+                it.copy(
+                    assignedAt = it.assignedAt
+                        .atZone(ZoneId.of("UTC"))
+                        .withZoneSameInstant(kstZoneId)
+                        .toLocalDateTime()
+                )
+            }
+
         return GetAdminAgentAssignedCreatorResponse(
             totalCount = queryRepository.getAssignedCreatorTotalCount(agentId = agentId, currentTime = now),
-            items = queryRepository.getAssignedCreators(agentId = agentId, offset = offset, limit = limit, currentTime = now)
+            items = items
         )
     }
 

src/test/kotlin/kr/co/vividnext/sodalive/admin/partner/agent/read/AdminAgentReadServiceTest.kt

@@ -15,6 +15,7 @@ import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.Test
 import org.mockito.Mockito
+import java.time.LocalDateTime
 import java.time.ZonedDateTime
 import java.util.Optional
 
@@ -117,6 +118,45 @@ class AdminAgentReadServiceTest {
         assertEquals("partner.agent.ratio.invalid_agent", exception.messageKey)
     }
 
+    @Test
+    @DisplayName("소속 크리에이터 목록 조회는 assignedAt을 UTC에서 KST로 변환해 반환한다")
+    fun shouldConvertAssignedAtToKstWhenGettingAssignedCreators() {
+        val agent = Member(
+            email = "agent@test.com",
+            password = "password",
+            nickname = "agent",
+            role = MemberRole.AGENT
+        )
+        agent.id = 11L
+
+        Mockito.`when`(memberRepository.findById(11L)).thenReturn(Optional.of(agent))
+        Mockito.`when`(
+            queryRepository.getAssignedCreatorTotalCount(
+                Mockito.eq(11L),
+                Mockito.any(LocalDateTime::class.java) ?: LocalDateTime.now()
+            )
+        ).thenReturn(1)
+        Mockito.doReturn(
+            listOf(
+                GetAdminAgentAssignedCreatorItem(
+                    creatorId = 21L,
+                    creatorNickname = "creator-a",
+                    assignedAt = LocalDateTime.of(2026, 4, 10, 3, 0)
+                )
+            )
+        ).`when`(queryRepository).getAssignedCreators(
+            Mockito.eq(11L),
+            Mockito.eq(0L),
+            Mockito.eq(20L),
+            Mockito.any(LocalDateTime::class.java) ?: LocalDateTime.now()
+        )
+
+        val actual = service.getAssignedCreators(agentId = 11L, offset = 0L, limit = 20L)
+
+        assertEquals(1, actual.totalCount)
+        assertEquals(LocalDateTime.of(2026, 4, 10, 12, 0), actual.items.first().assignedAt)
+    }
+
     @Test
     @DisplayName("라이브 정산 상세 조회는 기존 AgentCalculateService로 위임한다")
     fun shouldDelegateLiveSettlementToAgentCalculateService() {