feat: 智能体功能完善

.gitignore

@@ -65,3 +65,4 @@ bin
 *.zip
 /AppHome/AgentChat
 /AppHome/Agent/history
+/AppHome/Agent

AppHome/Tools.exe.config

-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <appSettings>
     <add key="UpdateTime" value="2021-12-30 10:52:06.703" />
@@ -25,5 +25,71 @@
         <bindingRedirect oldVersion="0.0.0.0-12.0.0.0" newVersion="12.0.0.0" />
       </dependentAssembly>
     </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="BouncyCastle.Crypto" publicKeyToken="0e99375e54769942" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-1.8.6.0" newVersion="1.8.6.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Memory" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.2.0" newVersion="4.0.2.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Buffers" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.0.4.0" newVersion="4.0.4.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Numerics.Vectors" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.5.0" newVersion="4.1.5.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Runtime.CompilerServices.Unsafe" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-6.0.1.0" newVersion="6.0.1.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.Bcl.AsyncInterfaces" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Text.Json" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-8.0.0.0" newVersion="8.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Channels" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Threading.Tasks.Extensions" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.5.4.0" newVersion="4.5.4.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.ValueTuple" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.5.0.0" newVersion="4.5.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.Bcl.HashCode" publicKeyToken="cc7b13ffcd2ddd51" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
+      </dependentAssembly>
+    </assemblyBinding>
   </runtime>
 </configuration>
\ No newline at end of file

Tools/MyAgent/Agent/FailoverPolicy.cs

+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Newtonsoft.Json.Linq;
+
+namespace Tools.MyAgent.Agent
+{
+    /// <summary>
+    /// 故障转移策略：主模型连续失败时自动切换到备用模型。
+    /// <para>从 AgentEngine 解耦，独立测试、独立配置。</para>
+    /// </summary>
+    public sealed class FailoverPolicy
+    {
+        private IOpenAiChatClient _primary;
+        private IOpenAiChatClient _backup;
+        private IOpenAiChatClient _current;
+        private int _consecutiveFailures;
+        private bool _failedOver;
+
+        public bool Enabled { get; private set; }
+        public bool IsActive => _failedOver;
+
+        public FailoverPolicy(IOpenAiChatClient primary, IOpenAiChatClient backup)
+        {
+            _primary = primary;
+            _backup = backup;
+            _current = primary;
+        }
+
+        public void Configure(bool enabled, string backupBaseUrl, string backupModel, string backupApiKey)
+        {
+            Enabled = enabled;
+            if (_backup != null)
+            {
+                _backup.BaseUrl = string.IsNullOrEmpty(backupBaseUrl) ? "http://localhost:11434/v1" : backupBaseUrl;
+                _backup.ApiKey = backupApiKey ?? "";
+                _backup.Model = string.IsNullOrEmpty(backupModel) ? "qwen2.5" : backupModel;
+                _backup.Temperature = 0.3;
+                _backup.MaxTokens = 8192;
+            }
+            if (!enabled && _failedOver)
+            {
+                RestorePrimary();
+            }
+            _consecutiveFailures = 0;
+        }
+
+        public IOpenAiChatClient CurrentClient => _current;
+
+        /// <summary>主客户端被外部重建（如代理开关变化）时同步替换引用，避免策略持有已释放的旧客户端</summary>
+        public void SetPrimary(IOpenAiChatClient primary)
+        {
+            if (primary == null) return;
+            _primary = primary;
+            if (!_failedOver) _current = primary;   // 未处于备用状态时立即跟随新主客户端
+        }
+
+        /// <summary>记录一次成功调用</summary>
+        public void RecordSuccess()
+        {
+            _consecutiveFailures = 0;
+            if (_failedOver)
+            {
+                RestorePrimary();
+                _failedOver = false;
+            }
+        }
+
+        /// <summary>记录一次失败；若启用且连续失败达阈值，返回 true 表示已切换</summary>
+        public bool RecordFailure(Exception ex)
+        {
+            if (!IsServiceError(ex))
+            {
+                _consecutiveFailures = 0;
+                return false;
+            }
+            _consecutiveFailures++;
+            if (Enabled && _consecutiveFailures >= 2 && !_failedOver)
+            {
+                SwitchToBackup();
+                _failedOver = true;
+                _consecutiveFailures = 0;
+                return true;
+            }
+            return false;
+        }
+
+        private void SwitchToBackup()
+        {
+            try { _backup.UseSystemProxy = true; } catch { }
+            _current = _backup;
+        }
+
+        private void RestorePrimary()
+        {
+            _current = _primary;
+        }
+
+        private static bool IsServiceError(Exception ex)
+        {
+            var msg = ex?.InnerException?.Message ?? ex?.Message ?? "";
+            return msg.Contains("429") || msg.Contains("500") || msg.Contains("502") || msg.Contains("503")
+                || msg.Contains("504") || msg.Contains("超时") || msg.Contains("timeout") || msg.Contains("timed out")
+                || ex is System.Net.Http.HttpRequestException
+                || msg.Contains("connection") || msg.Contains("连接");
+        }
+    }
+}
\ No newline at end of file

Tools/MyAgent/Agent/IOpenAiChatClient.cs

+using Newtonsoft.Json.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Tools.MyAgent.Agent
+{
+    /// <summary>
+    /// OpenAI 兼容聊天补全客户端接口，支持 SSE 流式 + function calling。
+    /// <para>换厂商只改 BaseUrl / Model / ApiKey。</para>
+    /// </summary>
+    public interface IOpenAiChatClient
+    {
+        string BaseUrl { get; set; }
+        string ApiKey { get; set; }
+        string Model { get; set; }
+        double Temperature { get; set; }
+        int MaxTokens { get; set; }
+        bool UseSystemProxy { get; set; }
+
+        /// <summary>发起一次流式补全，返回最终结果</summary>
+        Task<ChatResult> SendAsync(JArray messages, JArray tools, bool enableTools, CancellationToken ct);
+
+        /// <summary>非流式补全，一次性返回正文</summary>
+        Task<string> CompleteAsync(JArray messages, int maxTokens, CancellationToken ct);
+
+        /// <summary>连接测试</summary>
+        Task<(bool Ok, string Message)> TestConnectionAsync(CancellationToken ct);
+
+        /// <summary>取消当前请求</summary>
+        void Cancel();
+
+        /// <summary>释放底层资源</summary>
+        void Dispose();
+    }
+}
\ No newline at end of file

Tools/MyAgent/Support/ChatMessage.cs

+using System;
+
+namespace Tools.MyAgent
+{
+    /// <summary>
+    /// 对话消息（迁移自 Tools.MyCommon）
+    /// </summary>
+    public sealed class ChatMessage
+    {
+        public string Role { get; set; }
+        public string Content { get; set; }
+        public string ThinkingContent { get; set; }
+        public bool IsStreaming { get; set; }
+        public DateTime Timestamp { get; set; } = DateTime.Now;
+    }
+}