feat : 보스 전용채널 제거, 채널 5개로 변경, config.json 정리

MMOTestServer/MMOserver/Game/GameServer.cs

@@ -103,7 +103,7 @@ public class GameServer : ServerBase
     {
         AccTokenPacket accTokenPacket = Serializer.Deserialize<AccTokenPacket>(new ReadOnlyMemory<byte>(payload));
         string token = accTokenPacket.Token;
-        string username = "";
+        string? username = "";
         tokenHash.TryGetValue(token, out int hashKey);
         if (hashKey <= 1000)
         {
@@ -122,7 +122,7 @@ public class GameServer : ServerBase
         {
             // 신규 연결: 웹서버에 JWT 검증 요청
             username = await RestApi.Instance.VerifyTokenAsync(token);
-            if (username == null)
+            if (username == null || username.Trim().Length <= 0)
             {
                 Log.Warning("[Server] 토큰 검증 실패 - 연결 거부 PeerId={Id}", peer.Id);
                 userUuidGenerator.Release(hashKey);
@@ -1073,7 +1073,11 @@ public class GameServer : ServerBase
         List<string> userNames = new List<string>();
         foreach (int memberId in party.PartyMemberIds)
         {
-            userNames.Add(channel.GetPlayer(memberId).Nickname);
+            Player? memberPlayer = channel.GetPlayer(memberId);
+            if (memberPlayer != null)
+            {
+                userNames.Add(memberPlayer.Nickname);
+            }
         }
 
         BossRaidResult? result = await RestApi.Instance.BossRaidAccesssAsync(userNames, 1);