DebateWatchResponseDto

{
  "debateId": 1,
  "topic": "기본소득 도입에 찬성하십니까?",
  "participants": [
    {
      "userId": 1,
      "nickname": "user1",
      "team": "AGREE"
    },
    {
      "userId": 2,
      "nickname": "user2",
      "team": "DISAGREE"
    }
  ],
  "currentPhase": "ARGUMENT",
  "currentSpeakerId": 1,
  "remainingTime": 45,
  "viewerCount": 23,
  "streamUrl": "wss://example.com/stream/debate/1"
}