feat(character-curation): 캐릭터 큐레이션 도메인/관리 API 추가 및 메인 화면 통합

- CharacterCuration/CharacterCurationMapping 엔티티 추가
- 리포지토리/서비스(조회·관리) 구현
- 관리자 컨트롤러에 등록/수정/삭제/정렬/캐릭터 추가·삭제·정렬 API 추가
- 앱 메인 API에 큐레이션 섹션 노출
- 정렬/소프트 삭제/활성 캐릭터 필터링 규칙 적용

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/controller/ChatCharacterController.kt

@@ -31,6 +31,7 @@ class ChatCharacterController(
     private val bannerService: ChatCharacterBannerService,
     private val chatRoomService: ChatRoomService,
     private val characterCommentService: CharacterCommentService,
+    private val curationQueryService: kr.co.vividnext.sodalive.chat.character.curation.CharacterCurationQueryService,
 
     @Value("\${cloud.aws.cloud-front.host}")
     private val imageHost: String
@@ -85,8 +86,22 @@ class ChatCharacterController(
                 )
             }
 
-        // 큐레이션 섹션 (현재는 빈 리스트)
-        val curationSections = emptyList<CurationSection>()
+        // 큐레이션 섹션 (활성화된 큐레이션 + 캐릭터)
+        val curationSections = curationQueryService.getActiveCurationsWithCharacters()
+            .map { agg ->
+                CurationSection(
+                    characterCurationId = agg.curation.id!!,
+                    title = agg.curation.title,
+                    characters = agg.characters.map {
+                        Character(
+                            characterId = it.id!!,
+                            name = it.name,
+                            description = it.description,
+                            imageUrl = "$imageHost/${it.imagePath ?: "profile/default-profile.png"}"
+                        )
+                    }
+                )
+            }
 
         // 응답 생성
         ApiResponse.ok(

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/curation/CharacterCuration.kt

@@ -0,0 +1,47 @@
+package kr.co.vividnext.sodalive.chat.character.curation
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+import kr.co.vividnext.sodalive.common.BaseEntity
+import javax.persistence.CascadeType
+import javax.persistence.Column
+import javax.persistence.Entity
+import javax.persistence.FetchType
+import javax.persistence.JoinColumn
+import javax.persistence.ManyToOne
+import javax.persistence.OneToMany
+
+@Entity
+class CharacterCuration(
+    @Column(nullable = false)
+    var title: String,
+
+    // 19금 여부
+    @Column(nullable = false)
+    var isAdult: Boolean = false,
+
+    // 활성화 여부 (소프트 삭제)
+    @Column(nullable = false)
+    var isActive: Boolean = true,
+
+    // 정렬 순서 (낮을수록 먼저)
+    @Column(nullable = false)
+    var sortOrder: Int = 0
+) : BaseEntity() {
+    @OneToMany(mappedBy = "curation", cascade = [CascadeType.ALL], fetch = FetchType.LAZY, orphanRemoval = true)
+    var characterMappings: MutableList<CharacterCurationMapping> = mutableListOf()
+}
+
+@Entity
+class CharacterCurationMapping(
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "curation_id")
+    var curation: CharacterCuration,
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "character_id")
+    var chatCharacter: ChatCharacter,
+
+    // 정렬 순서 (낮을수록 먼저)
+    @Column(nullable = false)
+    var sortOrder: Int = 0
+) : BaseEntity()

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/curation/CharacterCurationQueryService.kt

@@ -0,0 +1,37 @@
+package kr.co.vividnext.sodalive.chat.character.curation
+
+import kr.co.vividnext.sodalive.chat.character.ChatCharacter
+import kr.co.vividnext.sodalive.chat.character.curation.repository.CharacterCurationMappingRepository
+import kr.co.vividnext.sodalive.chat.character.curation.repository.CharacterCurationRepository
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+
+@Service
+class CharacterCurationQueryService(
+    private val curationRepository: CharacterCurationRepository,
+    private val mappingRepository: CharacterCurationMappingRepository
+) {
+    data class CurationAgg(
+        val curation: CharacterCuration,
+        val characters: List<ChatCharacter>
+    )
+
+    @Transactional(readOnly = true)
+    fun getActiveCurationsWithCharacters(): List<CurationAgg> {
+        val curations = curationRepository.findByIsActiveTrueOrderBySortOrderAsc()
+        if (curations.isEmpty()) return emptyList()
+
+        // 매핑 + 캐릭터를 한 번에 조회(ch.isActive = true 필터 적용)하여 N+1 해소
+        val mappings = mappingRepository
+            .findByCurationInWithActiveCharacterOrderByCurationIdAscAndSortOrderAsc(curations)
+
+        val charactersByCurationId: Map<Long, List<ChatCharacter>> = mappings
+            .groupBy { it.curation.id!! }
+            .mapValues { (_, list) -> list.map { it.chatCharacter } }
+
+        return curations.map { curation ->
+            val characters = charactersByCurationId[curation.id!!] ?: emptyList()
+            CurationAgg(curation, characters)
+        }
+    }
+}

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/curation/repository/CharacterCurationMappingRepository.kt

@@ -0,0 +1,33 @@
+package kr.co.vividnext.sodalive.chat.character.curation.repository
+
+import kr.co.vividnext.sodalive.chat.character.curation.CharacterCuration
+import kr.co.vividnext.sodalive.chat.character.curation.CharacterCurationMapping
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
+import org.springframework.data.repository.query.Param
+import org.springframework.stereotype.Repository
+
+@Repository
+interface CharacterCurationMappingRepository : JpaRepository<CharacterCurationMapping, Long> {
+    fun findByCuration(curation: CharacterCuration): List<CharacterCurationMapping>
+
+    @Query(
+        "select m from CharacterCurationMapping m " +
+            "join fetch m.chatCharacter ch " +
+            "where m.curation in :curations and ch.isActive = true " +
+            "order by m.curation.id asc, m.sortOrder asc"
+    )
+    fun findByCurationInWithActiveCharacterOrderByCurationIdAscAndSortOrderAsc(
+        @Param("curations") curations: List<CharacterCuration>
+    ): List<CharacterCurationMapping>
+
+    @Query(
+        "select m from CharacterCurationMapping m " +
+            "join fetch m.chatCharacter ch " +
+            "where m.curation = :curation " +
+            "order by m.sortOrder asc"
+    )
+    fun findByCurationWithCharacterOrderBySortOrderAsc(
+        @Param("curation") curation: CharacterCuration
+    ): List<CharacterCurationMapping>
+}

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/curation/repository/CharacterCurationRepository.kt

@@ -0,0 +1,15 @@
+package kr.co.vividnext.sodalive.chat.character.curation.repository
+
+import kr.co.vividnext.sodalive.chat.character.curation.CharacterCuration
+import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
+import org.springframework.stereotype.Repository
+
+@Repository
+interface CharacterCurationRepository : JpaRepository<CharacterCuration, Long> {
+    fun findByIsActiveTrueOrderBySortOrderAsc(): List<CharacterCuration>
+    fun findAllByOrderBySortOrderAsc(): List<CharacterCuration>
+
+    @Query("SELECT MAX(c.sortOrder) FROM CharacterCuration c WHERE c.isActive = true")
+    fun findMaxSortOrder(): Int?
+}