feat(live-room): 라이브 룸 채팅 얼림 상태 저장/조회 기능 추가

- `LiveRoomInfo`에 `isChatFrozen` 필드(기본 false) 추가하여 Redis에 상태 저장 가능
- `GetRoomInfoResponse`에 `isChatFrozen` 노출 및 `LiveRoomService.getRoomInfo` 매핑 반영
- 요청 DTO `SetChatFreezeRequest(roomId, isChatFrozen)` 추가
- `PUT /live/room/info/set/chat-freeze` 엔드포인트 추가(크리에이터 권한 검증 포함)

docs/20260319_라이브룸채팅얼림상태저장및조회.md

@@ -0,0 +1,32 @@
+# 라이브 룸 채팅 얼림 상태 저장/조회 추가
+
+## 체크리스트
+- [x] 데이터 모델(LiveRoomInfo)에 `isChatFrozen` 필드(Boolean, 기본 false) 추가
+- [x] 요청 DTO `SetChatFreezeRequest(roomId, isChatFrozen)` 추가
+- [x] 서비스 `setChatFreeze` 구현(권한: 크리에이터만)
+- [x] 컨트롤러 `PUT /live/room/info/set/chat-freeze` 엔드포인트 추가
+- [x] `GetRoomInfoResponse`에 `isChatFrozen`(Boolean, 기본 false) 추가 및 조회 응답 포함
+- [x] 단위 테스트는 불필요 판단으로 제거(수동 테스트 가이드로 대체)
+- [x] `./gradlew build`로 컴파일 확인
+- [x] `./gradlew ktlintCheck` 실행 및 포맷 확인
+
+## 검증 기록
+### 1차 구현
+- 무엇을: 채팅 얼림 상태 저장/조회 기능 구현
+- 왜: 라이브 룸 채팅 제어 기능 제공을 위해
+- 어떻게:
+  - 빌드/테스트 명령 실행: `./gradlew clean build` 성공, `./gradlew ktlintCheck` 예정
+  - API 수동 점검 예정: `PUT /live/room/info/set/chat-freeze` 요청 본문 `{ "roomId": 1, "isChatFrozen": true }` → 200 OK, 이후 `GET /live/room/info/{id}` 응답에 `isChatFrozen: true` 포함 확인
+
+### 수동 테스트 방법
+- 사전조건: 방 생성 및 시작되어 Redis에 `LiveRoomInfo`가 존재해야 함
+- 1) 채팅 얼림 설정
+  - 요청: `PUT /live/room/info/set/chat-freeze`
+  - 헤더: `Authorization: Bearer <creator_token>`
+  - 바디: `{ "roomId": <roomId>, "isChatFrozen": true }`
+  - 기대: 200 OK, 본문은 `ApiResponse.ok` 규격
+- 2) 룸 정보 조회에서 반영 확인
+  - 요청: `GET /live/room/info/{roomId}`
+  - 기대: 응답 JSON 내 `isChatFrozen: true`
+- 3) 해제 시나리오 재검증
+  - `isChatFrozen`을 false로 요청 후 조회 시 `false` 확인

src/main/kotlin/kr/co/vividnext/sodalive/live/room/LiveRoomController.kt

@@ -5,6 +5,7 @@ import kr.co.vividnext.sodalive.common.SodaException
 import kr.co.vividnext.sodalive.live.room.cancel.CancelLiveRequest
 import kr.co.vividnext.sodalive.live.room.donation.DeleteLiveRoomDonationMessage
 import kr.co.vividnext.sodalive.live.room.donation.LiveRoomDonationRequest
+import kr.co.vividnext.sodalive.live.room.info.SetChatFreezeRequest
 import kr.co.vividnext.sodalive.live.room.like.LiveRoomLikeHeartRequest
 import kr.co.vividnext.sodalive.live.room.visit.LiveRoomVisitService
 import kr.co.vividnext.sodalive.member.Member
@@ -204,6 +205,16 @@ class LiveRoomController(
         ApiResponse.ok(service.setManager(request, member))
     }
 
+    @PutMapping("/info/set/chat-freeze")
+    fun setChatFreeze(
+        @RequestBody request: SetChatFreezeRequest,
+        @AuthenticationPrincipal(expression = "#this == 'anonymousUser' ? null : member") member: Member?
+    ) = run {
+        if (member == null) throw SodaException(messageKey = "common.error.bad_credentials")
+
+        ApiResponse.ok(service.setChatFreeze(request, member))
+    }
+
     @PostMapping("/donation")
     fun donation(
         @RequestBody request: LiveRoomDonationRequest,

src/main/kotlin/kr/co/vividnext/sodalive/live/room/LiveRoomService.kt

@@ -44,6 +44,7 @@ import kr.co.vividnext.sodalive.live.room.info.GetRoomInfoResponse
 import kr.co.vividnext.sodalive.live.room.info.LiveRoomInfo
 import kr.co.vividnext.sodalive.live.room.info.LiveRoomInfoRedisRepository
 import kr.co.vividnext.sodalive.live.room.info.LiveRoomMember
+import kr.co.vividnext.sodalive.live.room.info.SetChatFreezeRequest
 import kr.co.vividnext.sodalive.live.room.kickout.LiveRoomKickOutService
 import kr.co.vividnext.sodalive.live.room.like.GetLiveRoomHeartListResponse
 import kr.co.vividnext.sodalive.live.room.like.GetLiveRoomHeartTotalResponse
@@ -1052,10 +1053,29 @@ class LiveRoomService(
             creatorLanguageCode = creatorLanguageCode,
             isPrivateRoom = room.type == LiveRoomType.PRIVATE,
             password = room.password,
-            isActiveRoulette = isActiveRoulette
+            isActiveRoulette = isActiveRoulette,
+            isChatFrozen = roomInfo.isChatFrozen
         )
     }
 
+    fun setChatFreeze(request: SetChatFreezeRequest, member: Member) {
+        val lock = getOrCreateLock(memberId = member.id!!)
+        lock.write {
+            val room = repository.findByIdOrNull(request.roomId)
+                ?: throw SodaException(messageKey = "live.room.not_found")
+
+            if (room.member!!.id!! != member.id!!) {
+                throw SodaException(messageKey = "common.error.access_denied")
+            }
+
+            val roomInfo = roomInfoRepository.findByIdOrNull(request.roomId)
+                ?: throw SodaException(messageKey = "live.room.info_not_found")
+
+            roomInfo.isChatFrozen = request.isChatFrozen
+            roomInfoRepository.save(roomInfo)
+        }
+    }
+
     fun getDonationMessageList(roomId: Long, member: Member): List<LiveRoomDonationMessage> {
         val liveRoomCreatorId = repository.getLiveRoomCreatorId(roomId)
             ?: throw SodaException(messageKey = "live.room.info_not_found")

src/main/kotlin/kr/co/vividnext/sodalive/live/room/info/GetRoomInfoResponse.kt

@@ -24,5 +24,6 @@ data class GetRoomInfoResponse(
     val creatorLanguageCode: String?,
     val isPrivateRoom: Boolean = false,
     val password: String? = null,
-    val isActiveRoulette: Boolean = false
+    val isActiveRoulette: Boolean = false,
+    val isChatFrozen: Boolean = false
 )

src/main/kotlin/kr/co/vividnext/sodalive/live/room/info/LiveRoomInfo.kt

@@ -83,6 +83,9 @@ data class LiveRoomInfo(
         managerCount = managerList.size
     }
 
+    // 채팅 얼림 상태 (기본값: 해제)
+    var isChatFrozen: Boolean = false
+
     fun addDonationMessage(memberId: Long, nickname: String, isSecret: Boolean, can: Int, donationMessage: String) {
         val donationMessageSet = donationMessageList.toMutableSet()
         donationMessageSet.add(

src/main/kotlin/kr/co/vividnext/sodalive/live/room/info/SetChatFreezeRequest.kt

@@ -0,0 +1,6 @@
+package kr.co.vividnext.sodalive.live.room.info
+
+data class SetChatFreezeRequest(
+    val roomId: Long,
+    val isChatFrozen: Boolean
+)