refactor: ChatService 불필요한 로깅 메서드 제거

중복된 예외 처리 제거 및 코드 정리
LogChatRequestCommand, LogChatProcessContext 메서드 삭제
메트릭스 서비스에서 이미 로깅 제공으로 중복 방지

Author: ImGdevel

ProjectVG.Application/Services/Chat/ChatService.cs

@@ -70,8 +70,6 @@ public async Task<ChatRequestResult> EnqueueChatRequestAsync(ChatRequestCommand
 
             var preprocessContext = await PrepareChatRequestAsync(command);
 
-            LogChatRequestCommand(command);
-
             _ = Task.Run(async () => {
                 await ProcessChatRequestInternalAsync(preprocessContext).ConfigureAwait(false);
             });
@@ -123,20 +121,10 @@ private async Task ProcessChatRequestInternalAsync(ChatProcessContext context)
                 await failureHandler.HandleAsync(context).ConfigureAwait(false);
             }
             finally {
-                LogChatProcessContext(context);
                 _metricsService.EndChatMetrics();
                 _metricsService.LogChatMetrics();
             }
         }
 
-        private void LogChatRequestCommand(ChatRequestCommand command)
-        {
-            _logger.LogInformation("Starting chat process: {CommandInfo}", command.ToDebugString());
-        }
-
-        private void LogChatProcessContext(ChatProcessContext context)
-        {
-            _logger.LogInformation("Chat process completed: {ContextInfo}", context.ToDebugString());
-        }
     }
 }