src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/application/HomeRecommendationQueryService.kt

@@ -1,6 +1,7 @@
 package kr.co.vividnext.sodalive.v2.recommendation.application
 
 import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.i18n.LangContext
 import kr.co.vividnext.sodalive.v2.common.domain.CreatorActivityType
 import kr.co.vividnext.sodalive.v2.recommendation.domain.RecommendationSnapshotWindowPolicy
 import kr.co.vividnext.sodalive.v2.recommendation.domain.RecommendedSectionType
@@ -29,7 +30,8 @@ class HomeRecommendationQueryService(
     private val aiCharacterSnapshotFallbackService: AiCharacterSnapshotFallbackPort? = null,
     private val cheerCreatorSnapshotFallbackService: CheerCreatorSnapshotFallbackPort? = null,
     private val popularCommunitySnapshotFallbackService: PopularCommunitySnapshotFallbackPort? = null,
-    private val clock: Clock = Clock.systemUTC()
+    private val clock: Clock = Clock.systemUTC(),
+    private val langContext: LangContext
 ) {
     private val snapshotWindowPolicy = RecommendationSnapshotWindowPolicy()
 
@@ -76,7 +78,7 @@ class HomeRecommendationQueryService(
         memberId: Long? = null,
         includeAdultContents: Boolean = false
     ): List<HomeFirstAudioContentRecord> {
-        return queryPort.findFirstAudioContents(now, offset, limit, memberId, includeAdultContents)
+        return queryPort.findFirstAudioContents(now, offset, limit, memberId, includeAdultContents, langContext.lang.code)
     }
 
     fun findAiCharacterRecommendations(

src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/port/out/HomeRecommendationQueryPort.kt

@@ -38,7 +38,8 @@ interface HomeRecommendationQueryPort {
         offset: Long = 0,
         limit: Int,
         memberId: Long? = null,
-        includeAdultContents: Boolean = false
+        includeAdultContents: Boolean = false,
+        locale: String
     ): List<HomeFirstAudioContentRecord>
 
     fun findAiCharacterSnapshots(

src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/application/HomeRecommendationQueryServiceTest.kt

@@ -1,6 +1,7 @@
 package kr.co.vividnext.sodalive.v2.recommendation.application
 
 import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.i18n.LangContext
 import kr.co.vividnext.sodalive.v2.common.domain.CreatorActivityType
 import kr.co.vividnext.sodalive.v2.recommendation.domain.RecommendedSectionType
 import kr.co.vividnext.sodalive.v2.recommendation.port.out.HomeAiCharacterRecommendationRecord
@@ -27,7 +28,8 @@ import java.time.ZoneOffset
 class HomeRecommendationQueryServiceTest {
     private val port = FakeHomeRecommendationQueryPort()
     private val snapshotPort = FakeHomeRecommendationSnapshotPort()
-    private val service = HomeRecommendationQueryService(port, snapshotPort)
+    private val langContext = LangContext()
+    private val service = HomeRecommendationQueryService(port, snapshotPort, langContext = langContext)
 
     @Test
     @DisplayName("다시듣기 테마 콘텐츠는 AUDIO가 아니라 LIVE_REPLAY 활동으로 분류한다")
@@ -152,6 +154,7 @@ class HomeRecommendationQueryServiceTest {
         assertEquals(now, port.firstAudioNow)
         assertEquals(103L, port.firstAudioMemberId)
         assertEquals(10, port.firstAudioLimit)
+        assertEquals(Lang.KO.code, port.firstAudioLocale)
         assertEquals(port.firstAudioContents, contents)
     }
 
@@ -159,7 +162,7 @@ class HomeRecommendationQueryServiceTest {
     @DisplayName("AI 캐릭터 추천은 최신 스냅샷 20개를 기준으로 순서를 유지해 상세를 조립한다")
     fun shouldFindAiCharactersFromLatestSnapshotsWithLimitAndDetails() {
         val fallback = FakeAiCharacterSnapshotFallbackPort(emptyList())
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
         val oldSnapshotAt = LocalDateTime.of(2026, 5, 28, 23, 59, 59)
         val latestSnapshotAt = LocalDateTime.of(2026, 5, 29, 23, 59, 59)
         snapshotPort.replaceSnapshots(
@@ -261,7 +264,7 @@ class HomeRecommendationQueryServiceTest {
         val fallback = FakeAiCharacterSnapshotFallbackPort(
             listOf(snapshot(RecommendedSectionType.AI_CHARACTER, 10L, 10.0, LocalDateTime.of(2026, 7, 9, 14, 59, 59)))
         )
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
         port.aiCharacterDetails = listOf(
             HomeAiCharacterRecommendationRecord(
                 characterId = 10L,
@@ -286,7 +289,7 @@ class HomeRecommendationQueryServiceTest {
     @DisplayName("AI 캐릭터 추천은 fallback 후에도 스냅샷이 없으면 빈 배열을 반환한다")
     fun shouldReturnEmptyAiCharactersWhenFallbackDoesNotCreateSnapshots() {
         val fallback = FakeAiCharacterSnapshotFallbackPort(emptyList())
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
 
         val characters = service.findAiCharacterRecommendations()
 
@@ -302,7 +305,7 @@ class HomeRecommendationQueryServiceTest {
         val fallback = FakeAiCharacterSnapshotFallbackPort(
             listOf(snapshot(RecommendedSectionType.AI_CHARACTER, 99L, 99.0, LocalDateTime.of(2026, 7, 9, 14, 59, 59)))
         )
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.AI_CHARACTER,
             LocalDateTime.of(2026, 7, 9, 14, 59, 59),
@@ -325,7 +328,7 @@ class HomeRecommendationQueryServiceTest {
         val fallback = FakeAiCharacterSnapshotFallbackPort(
             listOf(snapshot(RecommendedSectionType.AI_CHARACTER, 99L, 99.0, LocalDateTime.of(2026, 7, 9, 14, 59, 59)))
         )
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
         val snapshotAt = LocalDateTime.of(2026, 7, 9, 14, 59, 59)
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.AI_CHARACTER,
@@ -352,7 +355,7 @@ class HomeRecommendationQueryServiceTest {
         val fallback = FakeAiCharacterSnapshotFallbackPort(
             listOf(snapshot(RecommendedSectionType.AI_CHARACTER, 99L, 99.0, LocalDateTime.of(2026, 7, 9, 14, 59, 59)))
         )
-        val service = HomeRecommendationQueryService(port, snapshotPort, fallback)
+        val service = HomeRecommendationQueryService(port, snapshotPort, fallback, langContext = langContext)
         val snapshotAt = LocalDateTime.of(2026, 7, 9, 14, 59, 59)
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.AI_CHARACTER,
@@ -376,7 +379,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             cheerCreatorSnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         val snapshotAt = LocalDateTime.of(2026, 7, 9, 14, 59, 59)
         snapshotPort.replaceSnapshots(
@@ -419,7 +423,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             cheerCreatorSnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         port.cheerCreatorDetails = listOf(
             HomeCheerCreatorRecommendationRecord(
@@ -448,7 +453,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             cheerCreatorSnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         val staleSnapshotAt = LocalDateTime.of(2026, 7, 8, 14, 59, 59)
         snapshotPort.replaceSnapshots(
@@ -483,7 +489,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             cheerCreatorSnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.CHEER_CREATOR,
@@ -502,7 +509,7 @@ class HomeRecommendationQueryServiceTest {
     @Test
     @DisplayName("인기 커뮤니티 추천은 대상일 스냅샷 10개를 기준으로 크리에이터 중복을 제거하고 상세를 조립한다")
     fun shouldFindPopularCommunitiesFromTargetDaySnapshotsWithLimitDetailsAndCreatorUniqueness() {
-        val service = HomeRecommendationQueryService(port, snapshotPort, clock = fixedClock())
+        val service = HomeRecommendationQueryService(port, snapshotPort, clock = fixedClock(), langContext = langContext)
         val snapshotAt = LocalDateTime.of(2026, 7, 9, 14, 59, 59)
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.POPULAR_COMMUNITY,
@@ -576,7 +583,7 @@ class HomeRecommendationQueryServiceTest {
     @Test
     @DisplayName("인기 커뮤니티 추천은 상위 스냅샷 중복 제거 후 뒤 후보로 기본 10개를 채운다")
     fun shouldBackfillPopularCommunitiesAfterRemovingDuplicateCreators() {
-        val service = HomeRecommendationQueryService(port, snapshotPort, clock = fixedClock())
+        val service = HomeRecommendationQueryService(port, snapshotPort, clock = fixedClock(), langContext = langContext)
         val snapshotAt = LocalDateTime.of(2026, 7, 9, 14, 59, 59)
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.POPULAR_COMMUNITY,
@@ -621,7 +628,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             popularCommunitySnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         val staleSnapshotAt = LocalDateTime.of(2026, 7, 8, 14, 59, 59)
         snapshotPort.replaceSnapshots(
@@ -666,7 +674,8 @@ class HomeRecommendationQueryServiceTest {
             port,
             snapshotPort,
             popularCommunitySnapshotFallbackService = fallback,
-            clock = fixedClock()
+            clock = fixedClock(),
+            langContext = langContext
         )
         snapshotPort.replaceSnapshots(
             RecommendedSectionType.POPULAR_COMMUNITY,
@@ -991,6 +1000,7 @@ class HomeRecommendationQueryServiceTest {
         var firstAudioOffset: Long? = null
         var firstAudioMemberId: Long? = null
         var firstAudioIncludeAdultContents: Boolean? = null
+        var firstAudioLocale: String? = null
         var aiCharacterDetailIds: List<Long> = emptyList()
         val aiCharacterDetailIdRequests = mutableListOf<List<Long>>()
         var randomAiCharacterExcludeIds: List<Long>? = null
@@ -1121,13 +1131,15 @@ class HomeRecommendationQueryServiceTest {
             offset: Long,
             limit: Int,
             memberId: Long?,
-            includeAdultContents: Boolean
+            includeAdultContents: Boolean,
+            locale: String
         ): List<HomeFirstAudioContentRecord> {
             firstAudioNow = now
             firstAudioOffset = offset
             firstAudioLimit = limit
             firstAudioMemberId = memberId
             firstAudioIncludeAdultContents = includeAdultContents
+            firstAudioLocale = locale
             return firstAudioContents
         }