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)

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
+)