修改了logwindows输出，避免高频输出时卡死。修改了流程运行上下文，使节点具备终止分支运行的能力。

WorkBench.Remote/Tool/LogTextWriter.cs

@@ -0,0 +1,85 @@
+using System.Collections.Concurrent;
+using System.IO;
+using System.Text;
+using System.Threading.Channels;
+
+namespace Serein.WorkBench.tool
+{
+    /// <summary>
+    /// 可以捕获类库输出的打印输出
+    /// </summary>
+    public class LogTextWriter : TextWriter
+    {
+        private readonly Action<string> logAction; // 更新日志UI的委托
+        private readonly StringWriter stringWriter = new(); // 缓存日志内容
+        private readonly Channel<string> logChannel = Channel.CreateUnbounded<string>(); // 日志管道
+        private readonly Action clearTextBoxAction; // 清空日志UI的委托
+        private int writeCount = 0; // 写入计数器
+        private const int maxWrites = 500; // 写入最大计数
+
+        public LogTextWriter(Action<string> logAction, Action clearTextBoxAction)
+        {
+            this.logAction = logAction;
+            this.clearTextBoxAction = clearTextBoxAction;
+
+            // 异步启动日志处理任务，不阻塞主线程
+            Task.Run(ProcessLogQueueAsync);
+        }
+
+        public override Encoding Encoding => Encoding.UTF8;
+
+        public override void Write(char value)
+        {
+            stringWriter.Write(value);
+            if (value == '\n')
+            {
+                EnqueueLog();
+            }
+        }
+
+        public override void Write(string? value)
+        {
+            if (string.IsNullOrWhiteSpace(value)) return;
+            stringWriter.Write(value);
+            if (value.Contains('\n'))
+            {
+                EnqueueLog();
+            }
+        }
+
+        public override void WriteLine(string? value)
+        {
+            if (string.IsNullOrWhiteSpace(value)) return;
+            stringWriter.WriteLine(value);
+            EnqueueLog();
+        }
+
+        // 将日志加入通道
+        private void EnqueueLog()
+        {
+            var log = stringWriter.ToString();
+            stringWriter.GetStringBuilder().Clear();
+
+            if (!logChannel.Writer.TryWrite(log))
+            {
+                // 如果写入失败（不太可能），则直接丢弃日志或处理
+            }
+        }
+
+        // 异步处理日志队列
+        private async Task ProcessLogQueueAsync()
+        {
+            await foreach (var log in logChannel.Reader.ReadAllAsync()) // 异步读取日志通道
+            {
+                logAction?.Invoke(log); // 执行日志写入到UI的委托
+
+                writeCount++;
+                if (writeCount >= maxWrites)
+                {
+                    clearTextBoxAction?.Invoke(); // 清空文本框
+                    writeCount = 0; // 重置计数器
+                }
+            }
+        }
+    }
+}