feat(chat-character): 관계 name 필드 추가에 따른 등록/수정/조회 로직 및 DTO 반영

- 관계 스키마를 name, relationShip 구조로 일원화
- Admin/사용자 컨트롤러 조회 응답에서 관계를 객체로 반환하도록 수정
- 등록/수정 요청 DTO에 ChatCharacterRelationshipRequest(name, relationShip) 추가
- 서비스 계층 create/update/add 메소드 시그니처 및 매핑 로직 업데이트
- description 한 줄 소개 사용 전제 하의 관련 사용부 점검(엔티티 컬럼 구성은 기존 유지)

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

@@ -14,8 +14,7 @@ class ChatCharacter(
     // 캐릭터 이름 (API 키 내에서 유일해야 함)
     var name: String,
 
-    // 캐릭터 설명
-    @Column(columnDefinition = "TEXT", nullable = false)
+    // 캐릭터 한 줄 소개
     var description: String,
 
     // AI 시스템 프롬프트
@@ -113,8 +112,8 @@ class ChatCharacter(
     }
 
     // 관계 추가 헬퍼 메소드
-    fun addRelationship(relationShip: String) {
-        val relationship = ChatCharacterRelationship(relationShip, this)
+    fun addRelationship(name: String, relationShip: String) {
+        val relationship = ChatCharacterRelationship(name, relationShip, this)
         relationships.add(relationship)
     }
 }

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

@@ -12,6 +12,7 @@ import javax.persistence.ManyToOne
 
 @Entity
 class ChatCharacterRelationship(
+    var name: String,
     val relationShip: String,
 
     @ManyToOne(fetch = FetchType.LAZY)

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

@@ -7,6 +7,7 @@ import kr.co.vividnext.sodalive.chat.character.dto.CharacterDetailResponse
 import kr.co.vividnext.sodalive.chat.character.dto.CharacterMainResponse
 import kr.co.vividnext.sodalive.chat.character.dto.CharacterMemoryResponse
 import kr.co.vividnext.sodalive.chat.character.dto.CharacterPersonalityResponse
+import kr.co.vividnext.sodalive.chat.character.dto.CharacterRelationshipResponse
 import kr.co.vividnext.sodalive.chat.character.dto.CurationSection
 import kr.co.vividnext.sodalive.chat.character.dto.RecentCharacter
 import kr.co.vividnext.sodalive.chat.character.service.ChatCharacterBannerService
@@ -137,7 +138,7 @@ class ChatCharacterController(
             )
         }
 
-        val relationships = character.relationships.map { it.relationShip }
+        val relationships = character.relationships.map { CharacterRelationshipResponse(it.name, it.relationShip) }
 
         // 응답 생성
         ApiResponse.ok(

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/dto/CharacterDetailResponse.kt

@@ -14,7 +14,7 @@ data class CharacterDetailResponse(
     val memories: List<CharacterMemoryResponse> = emptyList(),
     val personalities: List<CharacterPersonalityResponse> = emptyList(),
     val backgrounds: List<CharacterBackgroundResponse> = emptyList(),
-    val relationships: List<String> = emptyList(),
+    val relationships: List<CharacterRelationshipResponse> = emptyList(),
     val tags: List<String> = emptyList(),
     val values: List<String> = emptyList(),
     val hobbies: List<String> = emptyList(),
@@ -36,3 +36,8 @@ data class CharacterBackgroundResponse(
     val topic: String,
     val description: String
 )
+
+data class CharacterRelationshipResponse(
+    val name: String,
+    val relationShip: String
+)

src/main/kotlin/kr/co/vividnext/sodalive/chat/character/service/ChatCharacterService.kt

@@ -266,8 +266,8 @@ class ChatCharacterService(
      * 캐릭터에 관계 추가
      */
     @Transactional
-    fun addRelationshipToChatCharacter(chatCharacter: ChatCharacter, relationShip: String) {
-        chatCharacter.addRelationship(relationShip)
+    fun addRelationshipToChatCharacter(chatCharacter: ChatCharacter, name: String, relationShip: String) {
+        chatCharacter.addRelationship(name, relationShip)
         saveChatCharacter(chatCharacter)
     }
 
@@ -293,7 +293,7 @@ class ChatCharacterService(
         memories: List<Triple<String, String, String>> = emptyList(),
         personalities: List<Pair<String, String>> = emptyList(),
         backgrounds: List<Pair<String, String>> = emptyList(),
-        relationships: List<String> = emptyList()
+        relationships: List<Pair<String, String>> = emptyList()
     ): ChatCharacter {
         val chatCharacter = createChatCharacter(
             characterUUID, name, description, systemPrompt, age, gender, mbti,
@@ -313,8 +313,8 @@ class ChatCharacterService(
             chatCharacter.addBackground(topic, description)
         }
 
-        relationships.forEach { relationShip ->
-            chatCharacter.addRelationship(relationShip)
+        relationships.forEach { (name, relationShip) ->
+            chatCharacter.addRelationship(name, relationShip)
         }
 
         return saveChatCharacter(chatCharacter)
@@ -412,7 +412,7 @@ class ChatCharacterService(
         if (request.relationships != null) {
             chatCharacter.relationships.clear()
             request.relationships.forEach { relationship ->
-                chatCharacter.addRelationship(relationship)
+                chatCharacter.addRelationship(relationship.name, relationship.relationShip)
             }
         }