feat(recommendation): 인기 커뮤니티 본문 번역을 적용한다

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

@@ -3,6 +3,7 @@ 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.creator.channel.community.translation.application.CreatorCommunityTranslationService
 import kr.co.vividnext.sodalive.v2.recommendation.domain.RecommendationSnapshotWindowPolicy
 import kr.co.vividnext.sodalive.v2.recommendation.domain.RecommendedSectionType
 import kr.co.vividnext.sodalive.v2.recommendation.port.out.HomeAiCharacterRecommendationRecord
@@ -31,7 +32,8 @@ class HomeRecommendationQueryService(
     private val cheerCreatorSnapshotFallbackService: CheerCreatorSnapshotFallbackPort? = null,
     private val popularCommunitySnapshotFallbackService: PopularCommunitySnapshotFallbackPort? = null,
     private val clock: Clock = Clock.systemUTC(),
-    private val langContext: LangContext
+    private val langContext: LangContext,
+    private val creatorCommunityTranslationService: CreatorCommunityTranslationService
 ) {
     private val snapshotWindowPolicy = RecommendationSnapshotWindowPolicy()
 
@@ -154,9 +156,20 @@ class HomeRecommendationQueryService(
             .associateBy { it.communityId }
         val selectedCreatorIds = mutableSetOf<Long>()
 
-        return snapshots.mapNotNull { snapshot ->
+        val recommendations = snapshots.mapNotNull { snapshot ->
             detailsById[snapshot.targetId]?.takeIf { selectedCreatorIds.add(it.creatorId) }
         }.take(limit)
+        if (recommendations.isEmpty()) return emptyList()
+
+        val displayContents = creatorCommunityTranslationService.findDisplayContents(
+            recommendations.map { it.communityId },
+            langContext.lang.code
+        )
+        return recommendations.map { recommendation ->
+            displayContents[recommendation.communityId]
+                ?.let { displayContent -> recommendation.copy(content = displayContent.content) }
+                ?: recommendation
+        }
     }
 
     private fun findPopularCommunitySnapshotsWithFallback(): List<RecommendationSnapshotRecord> {