채팅 캐릭터 등록 - 리전 등록 기능 추가

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

@@ -67,6 +67,10 @@ class ChatCharacter(
     @Column(nullable = false)
     var characterType: CharacterType = CharacterType.Character,
 
+    // 리전 (기본값 KR, 수정 불가)
+    @Column(nullable = false)
+    val region: String = "KR",
+
     var isActive: Boolean = true
 ) : BaseEntity() {
     var imagePath: String? = null

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

@@ -582,6 +582,7 @@ class ChatCharacterService(
         originalTitle: String? = null,
         originalLink: String? = null,
         characterType: CharacterType = CharacterType.Character,
+        region: String = "KR",
         tags: List<String> = emptyList(),
         values: List<String> = emptyList(),
         hobbies: List<String> = emptyList(),
@@ -600,7 +601,8 @@ class ChatCharacterService(
             appearance = appearance,
             originalTitle = originalTitle,
             originalLink = originalLink,
-            characterType = characterType
+            characterType = characterType,
+            region = region
         )
 
         // 관련 엔티티 연결
@@ -630,6 +632,7 @@ class ChatCharacterService(
         originalTitle: String? = null,
         originalLink: String? = null,
         characterType: CharacterType = CharacterType.Character,
+        region: String = "KR",
         tags: List<String> = emptyList(),
         values: List<String> = emptyList(),
         hobbies: List<String> = emptyList(),
@@ -653,6 +656,7 @@ class ChatCharacterService(
             originalTitle = originalTitle,
             originalLink = originalLink,
             characterType = characterType,
+            region = region,
             tags = tags,
             values = values,
             hobbies = hobbies,