remove reasoning guard

AIChatPanel.xaml.cs

@@ -10,7 +10,6 @@ using System.Diagnostics;
 using System.Diagnostics.Tracing;
 using System.Linq;
 using System.Text;
-using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
@@ -97,7 +96,6 @@ namespace AnotherReplayReader
         // 输出段落
         private (Paragraph? Think, Paragraph? Content)? _currentContent;
         private Paragraph? _lastContentParagraph;
-        private bool _nextThinkingIsContinuation;
 
         // 进度计时
         private TimeSpan _previousTotalTime;
@@ -227,7 +225,6 @@ namespace AnotherReplayReader
             _thinkBlockWasExpanded = false;
             _currentContent = null;
             _lastContentParagraph = null;
-            _nextThinkingIsContinuation = false;
 
             _previousTotalTime = TimeSpan.Zero;
             _previousTotalChars = 0;
@@ -395,7 +392,6 @@ namespace AnotherReplayReader
                         OnChunk,
                         _linkedCts.Token);
                     UpdateTokenDisplay(overviewResult);
-                    ReportReasoningGuardResult(overviewResult);
                     _overview = OverviewParser.Parse(overviewResult.Response);
                     _overviewNarrative = _overview.Narrative;
                     overviewAttempt++;
@@ -555,7 +551,6 @@ namespace AnotherReplayReader
                             OnChunk,
                             _linkedCts.Token);
                         UpdateTokenDisplay(windowResult);
-                        ReportReasoningGuardResult(windowResult);
                         windowResponse = windowResult.Response;
 
                         if (backqueryCount >= maxBackqueriesPerSegment)
@@ -649,7 +644,6 @@ namespace AnotherReplayReader
                             OnChunk,
                             _linkedCts.Token);
                         UpdateTokenDisplay(revisionResult);
-                        ReportReasoningGuardResult(revisionResult);
 
                         if (string.IsNullOrWhiteSpace(revisionResult.Response))
                         {
@@ -760,7 +754,6 @@ namespace AnotherReplayReader
                 _linkedCts.Token);
 
             UpdateTokenDisplay(result);
-            ReportReasoningGuardResult(result);
 
             // 总结轮回查：允许模型请求一次远处原始区间，作为同一会话的追加输入。
             if (_replayData is null)
@@ -817,7 +810,6 @@ namespace AnotherReplayReader
                 OnChunk,
                 _linkedCts.Token);
             UpdateTokenDisplay(finalSummary);
-            ReportReasoningGuardResult(finalSummary);
             AppendLog("总结完成", "已根据回查区间补充最终总结。", false);
         }
 
@@ -899,22 +891,11 @@ namespace AnotherReplayReader
             _chunkQueue.Enqueue((chunk, DateTimeOffset.UtcNow));
         }
 
-        private void ReportReasoningGuardResult(AIAnalyze.Result result)
-        {
-            if (string.IsNullOrWhiteSpace(result.ReasoningContinuationError))
-            {
-                return;
-            }
-
-            AppendLog("推理保护警告", result.ReasoningContinuationError, false, _currentStage);
-        }
-
         private void StartThinkingBlock()
         {
             _thinkingStartTime = DateTime.Now;
             var stage = _currentStage ?? "分析";
-            var label = _nextThinkingIsContinuation ? "AI 续写中..." : "AI 思考中...";
+            var label = "AI 思考中...";
-            _nextThinkingIsContinuation = false;
             var parent = _currentVersionAddBlock is null
                 ? GetStageBlocks(_currentStage)
                 : null;
@@ -1200,176 +1181,6 @@ namespace AnotherReplayReader
             return block.Substring(jsonStart, jsonEnd - jsonStart + 1).Trim();
         }
 
-        private void AppendReasoningDiagnostics(string payload)
-        {
-            try
-            {
-                using var doc = JsonDocument.Parse(payload);
-                var root = doc.RootElement;
-                var originalText = root.TryGetProperty("originalRequestJson", out var original)
-                    && original.ValueKind == JsonValueKind.String
-                        ? original.GetString()
-                        : null;
-                var continuationText =
-                    root.TryGetProperty("continuationRequestJson", out var continuation)
-                    && continuation.ValueKind == JsonValueKind.String
-                        ? continuation.GetString()
-                        : null;
-
-                var summary = BuildReasoningDiagnosticSummary(
-                    originalText,
-                    continuationText);
-                if (!string.IsNullOrWhiteSpace(summary))
-                {
-                    AppendLog("推理保护诊断", summary, true, _currentStage);
-                }
-                if (!string.IsNullOrWhiteSpace(continuationText))
-                {
-                    AppendLog(
-                        "完整续写请求 JSON",
-                        PrettyPrintJson(continuationText!),
-                        true,
-                        _currentStage);
-                }
-            }
-            catch
-            {
-                AppendLog("推理保护诊断", payload, true, _currentStage);
-            }
-        }
-
-        private static string BuildReasoningDiagnosticSummary(
-            string? originalJson,
-            string? continuationJson)
-        {
-            var sb = new StringBuilder();
-            sb.AppendLine($"消息数：{GetMessageCount(originalJson)} → {GetMessageCount(continuationJson)}");
-            if (string.IsNullOrWhiteSpace(continuationJson))
-            {
-                return sb.ToString().TrimEnd();
-            }
-
-            try
-            {
-                using var doc = JsonDocument.Parse(continuationJson!);
-                if (!doc.RootElement.TryGetProperty("messages", out var messages)
-                    || messages.ValueKind != JsonValueKind.Array)
-                {
-                    return sb.ToString().TrimEnd();
-                }
-
-                for (var i = messages.GetArrayLength() - 1; i >= 0; --i)
-                {
-                    var message = messages[i];
-                    if (!message.TryGetProperty("tool_calls", out var toolCalls)
-                        || toolCalls.ValueKind != JsonValueKind.Array
-                        || toolCalls.GetArrayLength() == 0)
-                    {
-                        continue;
-                    }
-
-                    var toolName = "unknown";
-                    if (toolCalls[0].TryGetProperty("function", out var function)
-                        && function.TryGetProperty("name", out var name))
-                    {
-                        toolName = name.GetString() ?? toolName;
-                    }
-
-                    var reasoning = message.TryGetProperty("reasoning_content", out var reasoningProp)
-                        ? reasoningProp.GetString()
-                        : null;
-                    sb.AppendLine("新增 assistant 消息：");
-                    sb.AppendLine($"  - reasoning_content 长度：{reasoning?.Length ?? 0}");
-                    if (!string.IsNullOrEmpty(reasoning))
-                    {
-                        var markerIndex = reasoning.IndexOf(
-                            AiReasoningGuard.TruncationMarker,
-                            StringComparison.Ordinal);
-                        var tail = markerIndex >= 0
-                            ? reasoning.Substring(markerIndex)
-                            : "(未找到截断标记)";
-                        sb.AppendLine($"  - 末尾追加：{Excerpt(tail, 160)}");
-                    }
-                    sb.AppendLine($"  - tool_calls：{toolName}");
-                    break;
-                }
-
-                for (var i = messages.GetArrayLength() - 1; i >= 0; --i)
-                {
-                    var message = messages[i];
-                    if (!message.TryGetProperty("role", out var role)
-                        || role.GetString() != "tool")
-                    {
-                        continue;
-                    }
-
-                    var toolCallId = message.TryGetProperty("tool_call_id", out var id)
-                        ? id.GetString()
-                        : "?";
-                    var content = message.TryGetProperty("content", out var contentProp)
-                        ? contentProp.GetString()
-                        : null;
-                    sb.AppendLine("新增 tool 消息：");
-                    sb.AppendLine($"  - tool_call_id：{toolCallId}");
-                    sb.AppendLine($"  - 指令开头：{Excerpt(content ?? "(空)", 160)}");
-                    break;
-                }
-            }
-            catch
-            {
-                // 摘要解析失败时保留原始 JSON 回退。
-            }
-
-            return sb.ToString().TrimEnd();
-        }
-
-        private static int GetMessageCount(string? requestJson)
-        {
-            if (string.IsNullOrWhiteSpace(requestJson))
-            {
-                return 0;
-            }
-            try
-            {
-                using var doc = JsonDocument.Parse(requestJson!);
-                return doc.RootElement.TryGetProperty("messages", out var messages)
-                    && messages.ValueKind == JsonValueKind.Array
-                        ? messages.GetArrayLength()
-                        : 0;
-            }
-            catch
-            {
-                return 0;
-            }
-        }
-
-        private static string PrettyPrintJson(string json)
-        {
-            try
-            {
-                using var doc = JsonDocument.Parse(json);
-                return JsonSerializer.Serialize(
-                    doc.RootElement,
-                    new JsonSerializerOptions
-                    {
-                        WriteIndented = true,
-                        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
-                    });
-            }
-            catch
-            {
-                return json;
-            }
-        }
-
-        private static string Excerpt(string text, int maxLength)
-        {
-            var normalized = text.Replace("\r", "").Replace("\n", " ");
-            return normalized.Length <= maxLength
-                ? normalized
-                : normalized.Substring(0, maxLength) + "…";
-        }
-
         private void FlushPendingUiActions()
         {
             _isFlushingPendingUiActions = true;
@@ -1592,7 +1403,6 @@ namespace AnotherReplayReader
             var thinkSb = new StringBuilder();
             var contentSb = new StringBuilder();
             var errorSb = new StringBuilder();
-            var guardTriggered = false;
             while (_chunkQueue.TryDequeue(out var data))
             {
                 var (chunk, time) = data;
@@ -1620,19 +1430,6 @@ namespace AnotherReplayReader
                 {
                     errorSb.AppendLine(chunk.Text);
                 }
-                else if (chunk.Type == AIAnalyze.AIChunkType.ReasoningGuard)
-                {
-                    EndThinkingBlock();
-                    _nextThinkingIsContinuation = true;
-                    _pendingUiActions.Enqueue(() =>
-                        AppendLog("推理保护", chunk.Text, false, _currentStage));
-                    guardTriggered = true;
-                }
-                else if (chunk.Type == AIAnalyze.AIChunkType.ReasoningGuardRequest)
-                {
-                    _pendingUiActions.Enqueue(() =>
-                        AppendReasoningDiagnostics(chunk.Text));
-                }
             }
 
             if (thinkSb.Length > 0)
@@ -1651,10 +1448,6 @@ namespace AnotherReplayReader
             {
                 AddErrorBlock(errorSb.ToString());
             }
-            if (guardTriggered)
-            {
-                _currentContent = null;
-            }
         }
 
         private void AutoScroll()

AIProviderSettingsControl.xaml

@@ -1,4 +1,4 @@
-<UserControl x:Class="AnotherReplayReader.AIProviderSettingsControl"
+<UserControl x:Class="AnotherReplayReader.AIProviderSettingsControl"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
@@ -143,7 +143,6 @@
                             <RowDefinition Height="*"/>
                             <RowDefinition Height="Auto"/>
                             <RowDefinition Height="Auto"/>
-                            <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="100"/>
@@ -165,34 +164,20 @@
                                   Content="支持 SSE 流式输出"
                                   Margin="0,5"/>
 
-                        <Label Grid.Row="4" Grid.Column="0" Content="推理保护"/>
+                        <Label Grid.Row="4" Grid.Column="0" Content="高级参数"/>
-                        <StackPanel Grid.Row="4" Grid.Column="1" Orientation="Horizontal" Margin="0,5">
-                            <CheckBox x:Name="_reasoningGuardCheck"
-                                      Content="启用"
-                                      VerticalAlignment="Center"/>
-                            <Label Content="推理 token 阈值"
-                                   VerticalAlignment="Center"
-                                   Margin="10,0,0,0"/>
-                            <TextBox x:Name="_reasoningTokenLimitBox"
-                                     Width="80"
-                                     VerticalAlignment="Center"
-                                     ToolTip="留空使用 max(4096, max_tokens / 2)；仅流式模型生效"/>
-                        </StackPanel>
-
-                        <Label Grid.Row="5" Grid.Column="0" Content="高级参数"/>
                         <TextBox x:Name="_extraParamsBox"
-                                 Grid.Row="5" Grid.Column="1"
+                                 Grid.Row="4" Grid.Column="1"
                                  MinHeight="80"
                                  AcceptsReturn="True"
                                  ScrollViewer.VerticalScrollBarVisibility="Auto"/>
 
-                        <StackPanel Grid.Row="6" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
+                        <StackPanel Grid.Row="5" Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Right">
                             <Button Content="应用模型修改" Click="OnApplyModelClick" Margin="2"/>
                             <Button Content="从已知模板填充" Click="OnFillFromKnownModelsClick" Margin="2"/>
                         </StackPanel>
 
                         <TextBlock x:Name="_modelStatusText"
-                                   Grid.Row="7" Grid.ColumnSpan="2"
+                                   Grid.Row="6" Grid.ColumnSpan="2"
                                    Foreground="Gray" Margin="0,5"/>
                     </Grid>
                 </DockPanel>

AIProviderSettingsControl.xaml.cs

@@ -311,11 +311,6 @@ namespace AnotherReplayReader
             _contextLengthBox.Text = _currentModel.ContextLength.ToString();
             _contextBudgetBox.Text = _currentModel.ContextBudget is { } budget ? budget.ToString() : "0";
             _supportsSseCheck.IsChecked = _currentModel.IsStream;
-            _reasoningGuardCheck.IsChecked = _currentModel.ReasoningGuardEnabled;
-            _reasoningTokenLimitBox.Text =
-                _currentModel.ReasoningGuardTokenLimit is { } guardLimit
-                    ? guardLimit.ToString()
-                    : "";
 
             // 显示 ExtraParameters 为缩进 JSON
             var json = JsonSerializer.Serialize(
@@ -370,8 +365,6 @@ namespace AnotherReplayReader
                                     ContextLength = known.ContextLength,
                                     ContextBudget = known.ContextBudget,
                                     IsStream = known.IsStream,
-                                    ReasoningGuardEnabled = known.ReasoningGuardEnabled,
-                                    ReasoningGuardTokenLimit = known.ReasoningGuardTokenLimit,
                                     ExtraParameters = new Dictionary<string, object>(known.ExtraParameters)
                                 });
                             }
@@ -474,16 +467,6 @@ namespace AnotherReplayReader
                 _currentModel.ContextBudget = null;
             }
             _currentModel.IsStream = _supportsSseCheck.IsChecked == true;
-            _currentModel.ReasoningGuardEnabled = _reasoningGuardCheck.IsChecked == true;
-            if (int.TryParse(_reasoningTokenLimitBox.Text, out int guardLimit)
-                && guardLimit > 0)
-            {
-                _currentModel.ReasoningGuardTokenLimit = guardLimit;
-            }
-            else
-            {
-                _currentModel.ReasoningGuardTokenLimit = null;
-            }
 
             try
             {
@@ -529,8 +512,6 @@ namespace AnotherReplayReader
                 _currentModel.IsStream = known.IsStream;
                 _currentModel.ContextLength = known.ContextLength;
                 _currentModel.ContextBudget = known.ContextBudget;
-                _currentModel.ReasoningGuardEnabled = known.ReasoningGuardEnabled;
-                _currentModel.ReasoningGuardTokenLimit = known.ReasoningGuardTokenLimit;
                 RefreshModelList();
                 _modelComboBox.SelectedItem = _modelComboBox.Items
                     .OfType<ModelDisplayItem>()
@@ -550,8 +531,6 @@ namespace AnotherReplayReader
             _contextLengthBox.Text = "";
             _contextBudgetBox.Text = "";
             _supportsSseCheck.IsChecked = false;
-            _reasoningGuardCheck.IsChecked = false;
-            _reasoningTokenLimitBox.Text = "";
             _extraParamsBox.Text = "";
         }
     }

AI_REASONING_CONTINUATION_RESEARCH.md

@@ -2,7 +2,7 @@
 
 日期：2026-08-23  
 范围：OpenCodeGo / `deepseek-v4-flash`，OpenAI 兼容 `/chat/completions`  
-状态：实验性研究，未集成到主项目
+状态：实验性研究，未集成到主项目；主项目曾短暂集成推理保护，后因实测影响输出质量而移除（详见 `PLAN_ai_analysis_v2.md`）
 
 ## 摘要
 
@@ -10,7 +10,7 @@
 
 结论是：**仅发送 `reasoning_content` 或“上一轮思维链”并不稳定；成功率最高的方案是伪造一段 tool call 历史，并把续写要求、输出格式和需要引用的内容放入 tool 结果中。**
 
-与本研究相关的代码在 `AiV2.Tests/Program.cs` 中，默认不会执行。
+与本研究相关的实验代码已从 `AiV2.Tests/Program.cs` 中移除，不再保留可执行实验入口。
 
 ## 目标
 
@@ -232,9 +232,11 @@ system
 - 不要假设 `reasoning_content` 的末尾内容一定能被模型召回。
 - 增加原始响应/请求日志，以便区分“模型未看到”和“模型看到了但没引用”。
 
-## 主项目集成状态（2026-08-23）
+## 主项目集成状态（2026-08-23，历史记录；该功能已全部移除）
 
-- 主项目已落地模型级“推理保护”实验开关，默认关闭，仅在 `IsStream=true` 的模型上生效。
+> 以下内容是当时的集成状态，不代表当前代码。当前主项目已移除推理保护及所有相关代码/测试。
+
+- 主项目曾落地模型级“推理保护”实验开关，默认关闭，仅在 `IsStream=true` 的模型上生效。
 - 累计推理 token 达到阈值后停止读取当前 SSE 响应，保留部分推理和正文；最多发起一次续写。
 - 续写采用本报告推荐的伪造 tool call 历史：`assistant(reasoning_content + tool_calls)` → `tool(tool_call_id + 收尾指令)`。
 - 首请求不携带 `tools`，只有续写请求注入 `tools` 与 `tool_choice=none`；缓存命中为 best-effort。
@@ -248,9 +250,7 @@ system
 
 ## 专用测试状态
 
-- 测试代码：`AiV2.Tests/Program.cs` 中的 `OpenCodeGoFakeToolCallTests`。
+- 原测试代码：`AiV2.Tests/Program.cs` 中的 `OpenCodeGoFakeToolCallTests`。
-- 默认行为：不执行。
+- 现状：已随推理保护一起移除，不再保留可执行实验入口。
-- 启用条件：`ARR_AI_E2E=1` 且 `ARR_AI_E2E_TOOL=1`。
-- 输出：Markdown 报告，路径通过 `ARR_AI_TOOL_REPORT_PATH` 指定。
 
 主项目中的实验性 `ChatMessage` 扩展、`AiReasoningContinuationSettings`、UI 开关、回传/降级逻辑和 tool call 历史构造均已移除。

AiV2.Tests/Program.cs

@@ -46,9 +46,6 @@ namespace AiV2.Tests
             Run("UserKnowledgeOverlay", UserKnowledgeOverlayTests.Run);
             Run("PromptBuilders", PromptBuildersTests.Run);
             Run("RevisionFactsAndSerialization", RevisionFactsAndSerializationTests.Run);
-            Run("ReasoningGuard", ReasoningGuardTests.Run);
-            Run("OpenCodeGoFakeToolCallE2e", OpenCodeGoFakeToolCallTests.Run);
-            Run("OpenCodeGoGuardE2e", OpenCodeGoGuardE2e.Run);
             Run("UserReplayFactIndexRepro", UserReplayFactIndexReproTests.Run);
 
             Console.WriteLine();
@@ -992,46 +989,12 @@ namespace AiV2.Tests
             [property: JsonPropertyName("content"),
              JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] string? Content = null,
             [property: JsonPropertyName("reasoning_content"),
-             JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] string? ReasoningContent = null,
+             JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] string? ReasoningContent = null)
-            [property: JsonPropertyName("tool_calls"),
-             JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] IReadOnlyList<ChatMessage.ToolCall>? ToolCalls = null,
-            [property: JsonPropertyName("tool_call_id"),
-             JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] string? ToolCallId = null)
         {
-            internal sealed record ToolCall(
-                [property: JsonPropertyName("id")] string Id,
-                [property: JsonPropertyName("type")] string Type,
-                [property: JsonPropertyName("function")] ToolCallFunction Function);
-
-            internal sealed record ToolCallFunction(
-                [property: JsonPropertyName("name")] string Name,
-                [property: JsonPropertyName("arguments")] string Arguments);
-
             internal static ChatMessage Assistant(string? content, string? reasoningContent = null) =>
                 new("assistant",
                     string.IsNullOrEmpty(content) ? null : content,
                     string.IsNullOrEmpty(reasoningContent) ? null : reasoningContent);
-
-            internal static ChatMessage AssistantToolCall(
-                string? reasoningContent,
-                string toolCallId,
-                string toolName,
-                string arguments) =>
-                new(
-                    "assistant",
-                    null,
-                    reasoningContent,
-                    new[]
-                    {
-                        new ChatMessage.ToolCall(
-                            toolCallId,
-                            "function",
-                            new ChatMessage.ToolCallFunction(toolName, arguments))
-                    },
-                    null);
-
-            internal static ChatMessage ToolResult(string toolCallId, string content) =>
-                new("tool", content, null, null, toolCallId);
         }
 
         public async Task<Result> CompleteAsync(
@@ -1189,771 +1152,6 @@ namespace AiV2.Tests
         }
     }
 
-    internal sealed class GuardHttpHandler : HttpMessageHandler
-    {
-        public int RequestCount;
-        public string? FirstRequestBody;
-        public string? SecondRequestBody;
-        public bool FirstResponseContentOnly;
-        public bool SecondResponseInterrupted;
-
-        protected override async Task<HttpResponseMessage> SendAsync(
-            HttpRequestMessage request,
-            CancellationToken cancellationToken)
-        {
-            var body = await request.Content!.ReadAsStringAsync();
-            RequestCount++;
-            if (RequestCount == 1)
-            {
-                FirstRequestBody = body;
-                if (FirstResponseContentOnly)
-                {
-                    return CreateSse(
-                        "data: {\"choices\":[{\"delta\":{\"content\":\"final\"}}]}\n",
-                        "data: [DONE]\n");
-                }
-                return CreateSse(
-                    "data: {\"choices\":[{\"delta\":{\"content\":\"partial first\"}}]}\n",
-                    "data: {\"choices\":[{\"delta\":{\"reasoning_content\":\"reasoning\"}}]}\n");
-            }
-
-            SecondRequestBody = body;
-            if (SecondResponseInterrupted)
-            {
-                return CreateSse(
-                    "data: {\"choices\":[{\"delta\":{\"reasoning_content\":\"second reasoning\"}}]}\n");
-            }
-            return CreateSse(
-                "data: {\"choices\":[{\"delta\":{\"content\":\"final\"}}]}\n",
-                "data: [DONE]\n");
-        }
-
-        private static HttpResponseMessage CreateSse(params string[] lines)
-        {
-            return new HttpResponseMessage(System.Net.HttpStatusCode.OK)
-            {
-                Content = new StringContent(
-                    string.Concat(lines),
-                    Encoding.UTF8,
-                    "text/event-stream")
-            };
-        }
-    }
-
-    internal static class ReasoningGuardTests
-    {
-        public static void Run()
-        {
-            TestPrepareReasoning();
-            TestToolPrompt();
-            TestMessageSerialization();
-            TestDisabledAsync().GetAwaiter().GetResult();
-            TestGuardedContinuationAsync().GetAwaiter().GetResult();
-            TestFallbackAsync().GetAwaiter().GetResult();
-        }
-
-        private static AiProvider CreateProvider() =>
-            new()
-            {
-                Name = "测试",
-                BaseUrl = "http://localhost/v1",
-                ApiKey = "test-key",
-                DefaultMaxTokens = 16384
-            };
-
-        private static AiModel CreateModel(bool enabled = true) =>
-            new()
-            {
-                ModelId = "deepseek-v4-flash",
-                IsStream = true,
-                ContextLength = 1_000_000,
-                ContextBudget = 160_000,
-                ReasoningGuardEnabled = enabled,
-                ReasoningGuardTokenLimit = enabled ? 1 : null,
-                ExtraParameters = new Dictionary<string, object>()
-            };
-
-        private static ImmutableList<MainAIAnalyze.ChatMessage> CreateMessages() =>
-            ImmutableList<MainAIAnalyze.ChatMessage>.Empty
-                .Add(new MainAIAnalyze.ChatMessage("system", "测试系统"))
-                .Add(new MainAIAnalyze.ChatMessage("user", "请分析。"));
-
-        private static async Task<MainAIAnalyze.Result> CompleteAsync(
-            GuardHttpHandler handler,
-            AiModel model)
-        {
-            using var http = new HttpClient(handler);
-            var analyzer = new MainAIAnalyze(http);
-            return await analyzer.CompleteAsync(
-                CreateMessages(),
-                new AiRequestContext(CreateProvider(), model),
-                _ => { },
-                CancellationToken.None);
-        }
-
-        private static void TestPrepareReasoning()
-        {
-            var shortReasoning = "第一行。\n第二行。\n第三行。";
-            var prepared = AiReasoningGuard.PrepareReasoning(shortReasoning, 1000);
-            Program.Assert(
-                prepared.Text.TrimEnd().EndsWith(AiReasoningGuard.WrapUpStatement),
-                "末尾收尾语句");
-            Program.Assert(
-                prepared.Text.IndexOf(AiReasoningGuard.TruncationMarker) >= 0
-                && prepared.Text.IndexOf(AiReasoningGuard.TruncationMarker)
-                    == prepared.Text.LastIndexOf(AiReasoningGuard.TruncationMarker),
-                "只追加一次截断标记");
-            Program.Assert(
-                prepared.Text.IndexOf(AiReasoningGuard.TruncationMarker)
-                    < prepared.Text.IndexOf(AiReasoningGuard.WrapUpStatement),
-                "截断标记在收尾语句之前");
-
-            var longReasoning = "前文。\n" + new string('x', 500) + "后文。";
-            var truncated = AiReasoningGuard.PrepareReasoning(longReasoning, 10);
-            Program.Assert(!truncated.Text.Contains("后文"), "超限部分被截掉");
-
-            var formatState = AiReasoningGuard.DescribeFormatState(
-                "```json\n{\"unitClaims\":[");
-            Program.Assert(
-                formatState.Contains("代码围栏未闭合")
-                && formatState.Contains("JSON"),
-                "格式状态检测");
-        }
-
-        private static void TestToolPrompt()
-        {
-            var result = AiReasoningGuard.BuildToolResult();
-            Program.Assert(
-                result.Contains("立即停止继续展开推理")
-                && result.Contains("直接输出最终结果")
-                && result.Contains("最后一句已经宣告收尾"),
-                "强收尾措辞");
-            Program.Assert(
-                !result.Contains("上一轮思维链")
-                && !result.Contains("截断点")
-                && !result.Contains("My reasoning has been truncated")
-                && !result.Contains("token limit"),
-                "避免歧义措辞");
-        }
-
-        private static void TestMessageSerialization()
-        {
-            var assistant = MainAIAnalyze.ChatMessage.AssistantToolCall(
-                "thinking",
-                "call_1",
-                "analysis_hint",
-                "{\"instruction\":\"wrap up\"}");
-            var assistantJson = JsonSerializer.Serialize(assistant);
-            Program.Assert(
-                assistantJson.Contains("\"reasoning_content\":\"thinking\"")
-                && assistantJson.Contains("\"tool_calls\"")
-                && assistantJson.Contains("\"analysis_hint\""),
-                "assistant 工具历史序列化");
-
-            var tool = MainAIAnalyze.ChatMessage.ToolResult(
-                "call_1",
-                AiReasoningGuard.BuildToolResult());
-            var toolJson = JsonSerializer.Serialize(tool);
-            Program.Assert(
-                toolJson.Contains("\"tool_call_id\":\"call_1\""),
-                "tool 结果序列化");
-        }
-
-        private static async Task TestDisabledAsync()
-        {
-            var handler = new GuardHttpHandler { FirstResponseContentOnly = true };
-            var result = await CompleteAsync(handler, CreateModel(enabled: false));
-            Program.AssertEqual(1, handler.RequestCount, "未启用时只发一次请求");
-            Program.Assert(!result.ContinuationApplied, "未启用不续写");
-            Program.AssertEqual("final", result.Response, "未启用保持普通结果");
-        }
-
-        private static async Task TestGuardedContinuationAsync()
-        {
-            var handler = new GuardHttpHandler();
-            var result = await CompleteAsync(handler, CreateModel());
-            Program.AssertEqual(2, handler.RequestCount, "触发后发起一次续写");
-            Program.Assert(result.ContinuationApplied, "续写成功");
-            Program.AssertEqual("final", result.Response, "续写返回最终正文");
-            Program.Assert(
-                handler.FirstRequestBody is { } firstBody
-                && !firstBody.Contains("\"tools\""),
-                "首次请求不携带 tool 定义");
-            Program.Assert(
-                handler.SecondRequestBody is { } secondBody
-                && secondBody.Contains("\"tools\"")
-                && secondBody.Contains("\"tool_choice\":\"none\"")
-                && secondBody.Contains("\"reasoning_content\"")
-                && secondBody.Contains("\"tool_calls\"")
-                && secondBody.Contains("\"tool_call_id\""),
-                "续写请求携带工具历史");
-            Program.Assert(
-                result.ReasoningOriginalRequestJson is { } originalJson
-                && originalJson.Contains("\"messages\""),
-                "首次请求 JSON 回传 UI");
-            Program.Assert(
-                result.ReasoningContinuationRequestJson is { } continuationJson
-                && continuationJson.Contains("\"tools\"")
-                && continuationJson.Contains("\"reasoning_content\"")
-                && continuationJson.Contains("我已经整理出足够的信息"),
-                "修改后请求 JSON 回传 UI");
-        }
-
-        private static async Task TestFallbackAsync()
-        {
-            var handler = new GuardHttpHandler { SecondResponseInterrupted = true };
-            var result = await CompleteAsync(handler, CreateModel());
-            Program.Assert(!result.ContinuationApplied, "二次超限不再续写");
-            Program.Assert(result.ReasoningInterrupted, "保留中断状态");
-            Program.Assert(
-                result.ReasoningContinuationError is { } error
-                && error.Contains("回退"),
-                "回退提示");
-            Program.Assert(
-                result.ReasoningContinuationRequestJson is { } continuationJson
-                && continuationJson.Contains("\"tools\""),
-                "回退时仍提供修改后请求 JSON");
-            Program.AssertEqual("partial first", result.Response, "回退首次部分正文");
-        }
-    }
-
-    internal static class OpenCodeGoFakeToolCallTests
-    {
-        private const string SystemPrompt =
-            "你是用于验证思维链回传的实验辅助。请先用 reasoning_content 进行内部推理，再给出简短、准确的回答。";
-        private const string FirstUserPrompt =
-            "请分析：A 比 B 高 20%，B 比 C 高 25%，那么 A 比 C 高多少？请先思考，再回答最终百分比。";
-        private const string ToolName = "analysis_hint";
-        private const string MemoryMarker = "TOKEN_MARK=731942";
-
-        public static void Run()
-        {
-            if (Environment.GetEnvironmentVariable("ARR_AI_E2E") != "1"
-                || Environment.GetEnvironmentVariable("ARR_AI_E2E_TOOL") != "1")
-            {
-                Console.WriteLine(
-                    "  [跳过] 未同时设置 ARR_AI_E2E=1 与 ARR_AI_E2E_TOOL=1，"
-                    + "跳过伪造 tool call 历史实验");
-                return;
-            }
-            RunAsync().GetAwaiter().GetResult();
-        }
-
-        private static async Task RunAsync()
-        {
-            var settingsPath = FindSettingsPath();
-            Console.WriteLine($"  [E2E-TOOL] 配置：{settingsPath}");
-
-            var settings = JsonSerializer.Deserialize<AiSettings>(
-                File.ReadAllText(settingsPath, Encoding.UTF8))
-                ?? throw new InvalidOperationException("AI 设置文件无法解析");
-            var provider = settings.Providers.FirstOrDefault(p =>
-                p.Name.Equals("OpenCodeGo", StringComparison.OrdinalIgnoreCase)
-                && p.Models.Any(m =>
-                    m.ModelId.Equals("deepseek-v4-flash", StringComparison.OrdinalIgnoreCase)))
-                ?? throw new InvalidOperationException(
-                    "当前配置中未找到 OpenCodeGo / deepseek-v4-flash 服务与模型");
-            var model = provider.Models.First(m =>
-                m.ModelId.Equals("deepseek-v4-flash", StringComparison.OrdinalIgnoreCase));
-            if (string.IsNullOrWhiteSpace(provider.ApiKey))
-            {
-                throw new InvalidOperationException("OpenCodeGo 的 API Key 为空");
-            }
-
-            Console.WriteLine(
-                $"  [E2E-TOOL] Provider={provider.Name}; Model={model.ModelId}; "
-                + $"BaseUrl={provider.BaseUrl}; Stream={model.IsStream}; ApiKey=***");
-
-            var report = new StringBuilder();
-            AppendHeader(report, provider, model, settingsPath);
-            var reportPath = Environment.GetEnvironmentVariable("ARR_AI_TOOL_REPORT_PATH");
-            if (string.IsNullOrWhiteSpace(reportPath))
-            {
-                reportPath = Path.Combine(
-                    Environment.CurrentDirectory, "AI_reasoning_continuation_position_sweep_report.md");
-            }
-            reportPath = Path.GetFullPath(reportPath);
-
-            try
-            {
-                var analyzer = new AIAnalyze();
-                var normalContext = new AiRequestContext(provider, model);
-                var firstMessages = ImmutableList<AIAnalyze.ChatMessage>.Empty
-                    .Add(new AIAnalyze.ChatMessage("system", SystemPrompt))
-                    .Add(new AIAnalyze.ChatMessage("user", FirstUserPrompt));
-                var first = await CompleteAndRecordAsync(
-                    analyzer, normalContext, firstMessages, "初始请求（system + user）", report);
-                var firstReasoning = first?.Reasoning ?? string.Empty;
-                if (first is null || firstReasoning.Length == 0)
-                {
-                    report.AppendLine("初始请求未获得 reasoning_content，无法继续伪造 tool call 实验。");
-                    return;
-                }
-                var initialFirst = first;
-
-                var toolContext = BuildToolContext(provider, model);
-                var wordings = new[]
-                {
-                    new
-                    {
-                        Name = "措辞B：当前推理",
-                        Target = "你当前正在进行的内部推理",
-                        ArgumentInstruction = "继续你当前正在进行的内部推理，并参考工具结果。"
-                    },
-                    new
-                    {
-                        Name = "措辞D：tool_calls 携带的 reasoning_content",
-                        Target = "你本次 tool_calls 消息中携带的 reasoning_content",
-                        ArgumentInstruction = "继续你本次 tool_calls 消息中携带的 reasoning_content，并参考工具结果。"
-                    }
-                };
-                var positions = new[]
-                {
-                    new { Name = "25%", Ratio = 0.25 },
-                    new { Name = "50%", Ratio = 0.50 },
-                    new { Name = "75%", Ratio = 0.75 },
-                    new { Name = "末尾", Ratio = 1.0 }
-                };
-                const int repetitions = 5;
-                var combinedCount = wordings.Length * positions.Length;
-                var foundCounts = new int[combinedCount];
-                var missingCounts = new int[combinedCount];
-                var failedCounts = new int[combinedCount];
-                var names = new string[combinedCount];
-                var markerInSent = new bool[combinedCount];
-                var comboIndex = 0;
-
-                foreach (var wording in wordings)
-                {
-                    foreach (var position in positions)
-                    {
-                        var comboName = $"{wording.Name} / 标记位置 {position.Name}";
-                        names[comboIndex] = comboName;
-                        var reasoningWithMarker = InsertMemoryMarker(
-                            firstReasoning, position.Ratio);
-                        markerInSent[comboIndex] = reasoningWithMarker.Contains("731942");
-                        Console.WriteLine(
-                            $"  [E2E-TOOL] 正在测试：{comboName}（重复 5 次）");
-                        for (var rep = 0; rep < repetitions; ++rep)
-                        {
-                            var toolCallId = $"call_position_{comboIndex + 1}_{rep + 1}";
-                            var arguments = JsonSerializer.Serialize(new
-                            {
-                                instruction = wording.ArgumentInstruction
-                            });
-                            var messages = ImmutableList<AIAnalyze.ChatMessage>.Empty
-                                .Add(new AIAnalyze.ChatMessage("system", SystemPrompt))
-                                .Add(new AIAnalyze.ChatMessage("user", FirstUserPrompt))
-                                .Add(AIAnalyze.ChatMessage.AssistantToolCall(
-                                    reasoningWithMarker, toolCallId, ToolName, arguments))
-                                .Add(AIAnalyze.ChatMessage.ToolResult(
-                                    toolCallId, BuildToolResult(wording.Target)));
-                            var result = await CompleteAndRecordAsync(
-                                analyzer, toolContext, messages,
-                                $"记忆标记 {comboName}（重复 {rep + 1}/{repetitions}）", report);
-                            if (result is { } completed)
-                            {
-                                var combined = (completed.Reasoning ?? string.Empty)
-                                    + "\n" + completed.Response;
-                                var found = ContainsMemoryMarker(combined);
-                                var missing = SaysMarkerMissing(combined);
-                                if (found)
-                                {
-                                    foundCounts[comboIndex]++;
-                                }
-                                if (missing)
-                                {
-                                    missingCounts[comboIndex]++;
-                                }
-                                Console.WriteLine(
-                                    $"  [E2E-TOOL] {comboName} [{rep + 1}/{repetitions}]："
-                                    + $"content={completed.Response.Length}；"
-                                    + $"reasoning={(completed.Reasoning ?? string.Empty).Length}；"
-                                    + $"markerFound={found}；missing={missing}");
-                            }
-                            else
-                            {
-                                failedCounts[comboIndex]++;
-                                Console.WriteLine(
-                                    $"  [E2E-TOOL] {comboName} [{rep + 1}/{repetitions}]：请求失败（详见报告）");
-                            }
-                        }
-                        comboIndex++;
-                    }
-                }
-                AppendSummary(
-                    report,
-                    names,
-                    markerInSent,
-                    foundCounts,
-                    missingCounts,
-                    failedCounts);
-            }
-            finally
-            {
-                var reportDir = Path.GetDirectoryName(reportPath);
-                if (!string.IsNullOrEmpty(reportDir))
-                {
-                    Directory.CreateDirectory(reportDir);
-                }
-                File.WriteAllText(reportPath, report.ToString(), new UTF8Encoding(false));
-                Console.WriteLine($"  [E2E-TOOL] 人工审阅报告已写入：{reportPath}");
-            }
-        }
-
-        private static AiRequestContext BuildToolContext(
-            AiProvider provider,
-            AiModel sourceModel)
-        {
-            var model = new AiModel
-            {
-                ModelId = sourceModel.ModelId,
-                DisplayName = sourceModel.DisplayName,
-                IsStream = sourceModel.IsStream,
-                ContextLength = sourceModel.ContextLength,
-                ContextBudget = sourceModel.ContextBudget,
-                ExtraParameters = new Dictionary<string, object>(sourceModel.ExtraParameters)
-            };
-            model.ExtraParameters["tools"] = new[]
-            {
-                new
-                {
-                    type = "function",
-                    function = new
-                    {
-                        name = ToolName,
-                        description = "向模型提供上一轮思维链的继续提示。",
-                        parameters = new
-                        {
-                            type = "object",
-                            properties = new
-                            {
-                                instruction = new
-                                {
-                                    type = "string",
-                                    description = "模型应遵循的续写提示。"
-                                }
-                            },
-                            required = new[] { "instruction" }
-                        }
-                    }
-                }
-            };
-            model.ExtraParameters["tool_choice"] = "none";
-            return new AiRequestContext(provider, model);
-        }
-
-        private static string BuildToolResult(string target) =>
-            "工具结果：请继续" + target + "。这是一次确定性记忆测试。"
-            + "该思考内容中有一个内部记忆标记，请不要从本工具结果中猜测或寻找。"
-            + "请原样写出该标记；如果该思考内容中没有该标记，请明确回答“标记不存在”。"
-            + "不要从零重新推导，也不要杜撰标记。";
-
-        private static string InsertMemoryMarker(string text, double ratio)
-        {
-            if (ratio >= 1)
-            {
-                return text + "\n\n[内部记忆标记 " + MemoryMarker + "]";
-            }
-            var index = Math.Max(
-                0,
-                Math.Min(text.Length, (int)(text.Length * ratio)));
-            return text.Insert(
-                index,
-                "\n\n[内部记忆标记 " + MemoryMarker + "]\n\n");
-        }
-
-        private static bool ContainsMemoryMarker(string text) =>
-            text.Contains("731942") || text.Contains("TOKEN_MARK");
-
-        private static bool SaysMarkerMissing(string text) =>
-            text.Contains("标记不存在")
-            || text.Contains("没有该标记")
-            || text.Contains("没有标记");
-
-        private static void AppendSummary(
-            StringBuilder report,
-            string[] names,
-            bool[] markerInSent,
-            int[] foundCounts,
-            int[] missingCounts,
-            int[] failedCounts)
-        {
-            report.AppendLine("## 记忆标记统计");
-            report.AppendLine();
-            report.AppendLine($"- 记忆标记：`{MemoryMarker}`");
-            report.AppendLine("- 每个组合重复 5 次。");
-            report.AppendLine();
-            for (var i = 0; i < names.Length; ++i)
-            {
-                report.AppendLine(
-                    $"- **{names[i]}**：发送链包含标记 = {markerInSent[i]}；"
-                    + $"正确写出标记 = {foundCounts[i]}/5；"
-                    + $"明确说没有 = {missingCounts[i]}/5；"
-                    + $"请求失败 = {failedCounts[i]}/5");
-            }
-            report.AppendLine();
-        }
-
-        private static async Task<AIAnalyze.Result?> CompleteAndRecordAsync(
-            AIAnalyze analyzer,
-            AiRequestContext context,
-            ImmutableList<AIAnalyze.ChatMessage> messages,
-            string label,
-            StringBuilder report)
-        {
-            var sw = Stopwatch.StartNew();
-            try
-            {
-                var result = await analyzer.CompleteAsync(
-                    messages, context, null, CancellationToken.None);
-                sw.Stop();
-                AppendRecord(report, label, messages, result, sw.Elapsed);
-                return result;
-            }
-            catch (Exception ex)
-            {
-                sw.Stop();
-                report.AppendLine($"## {label}（请求失败）");
-                report.AppendLine();
-                report.AppendLine($"- 耗时：{sw.Elapsed.TotalSeconds:0.00} 秒");
-                report.AppendLine($"- 错误：{ex.Message}");
-                report.AppendLine("- 关键点：assistant 消息包含 tool_calls，随后有 tool 回复；请求携带 tools 定义。");
-                report.AppendLine();
-                report.AppendLine("---");
-                report.AppendLine();
-                Console.WriteLine($"  [E2E-TOOL] {label} 失败：{ex.Message}");
-                return null;
-            }
-        }
-
-        private static void AppendHeader(
-            StringBuilder report,
-            AiProvider provider,
-            AiModel model,
-            string settingsPath)
-        {
-            report.AppendLine("# 伪造 tool call 历史实验");
-            report.AppendLine();
-            report.AppendLine($"- 配置：{provider.Name} / {model.ModelId}");
-            report.AppendLine($"- BaseUrl：{provider.BaseUrl}");
-            report.AppendLine($"- 配置文件：{settingsPath}");
-            report.AppendLine("- API Key：***（不写入报告）");
-            report.AppendLine();
-            report.AppendLine("本实验在请求中声明了 `tools` 并将 `tool_choice` 设为 `none`；");
-            report.AppendLine("构造的历史为：system → 初始 user → assistant(reasoning_content + tool_calls) → tool(tool_call_id + 提示结果)。");
-            report.AppendLine(
-                $"完整思维链按 25%/50%/75%/末尾四种位置注入确定性记忆标记 `{MemoryMarker}`；"
-                + "工具结果使用“当前推理”和“本次 tool_calls 消息携带的 reasoning_content”两种措辞，"
-                + "且不提及“上一轮”“截断点”等概念，要求模型原样写出标记。");
-            report.AppendLine("没有第 5 条新的 user 消息。");
-            report.AppendLine();
-        }
-
-        private static void AppendRecord(
-            StringBuilder report,
-            string label,
-            ImmutableList<AIAnalyze.ChatMessage> messages,
-            AIAnalyze.Result result,
-            TimeSpan elapsed)
-        {
-            report.AppendLine($"## {label}");
-            report.AppendLine();
-            report.AppendLine($"- 耗时：{elapsed.TotalSeconds:0.00} 秒");
-            report.AppendLine($"- prompt_tokens：{result.PromptTokens?.ToString() ?? "?"}");
-            report.AppendLine($"- completion_tokens：{result.CompletionTokens?.ToString() ?? "?"}");
-            report.AppendLine($"- reasoning_tokens：{result.ReasoningTokens?.ToString() ?? "?"}");
-            report.AppendLine();
-            report.AppendLine("### 发送的 messages");
-            report.AppendLine();
-            for (var i = 0; i < messages.Count; ++i)
-            {
-                var message = messages[i];
-                report.AppendLine($"**{i + 1}. role = `{message.Role}`**");
-                report.AppendLine();
-                if (message.Content is null)
-                {
-                    report.AppendLine("content：`未发送`");
-                }
-                else
-                {
-                    report.AppendLine("content：");
-                    AppendTextBlock(report, message.Content);
-                }
-                report.AppendLine();
-                if (message.ToolCallId is not null)
-                {
-                    report.AppendLine($"tool_call_id：`{message.ToolCallId}`");
-                    report.AppendLine();
-                }
-                if (message.ToolCalls is { } toolCalls)
-                {
-                    report.AppendLine("tool_calls：");
-                    foreach (var toolCall in toolCalls)
-                    {
-                        report.AppendLine(
-                            $"- id=`{toolCall.Id}`; type=`{toolCall.Type}`; "
-                            + $"name=`{toolCall.Function.Name}`");
-                        report.AppendLine();
-                        report.AppendLine("arguments：");
-                        AppendTextBlock(report, toolCall.Function.Arguments);
-                    }
-                    report.AppendLine();
-                }
-                if (message.Role == "assistant")
-                {
-                    report.AppendLine(
-                        message.ReasoningContent is null
-                            ? "reasoning_content：`未发送`"
-                            : "reasoning_content：");
-                    if (message.ReasoningContent is not null)
-                    {
-                        AppendTextBlock(report, message.ReasoningContent);
-                    }
-                    report.AppendLine();
-                }
-                report.AppendLine();
-            }
-            report.AppendLine("### 模型响应");
-            report.AppendLine();
-            report.AppendLine("新 reasoning_content：");
-            AppendTextBlock(report, result.Reasoning ?? string.Empty);
-            report.AppendLine();
-            report.AppendLine("回答正文（content）：");
-            AppendTextBlock(report, result.Response);
-            report.AppendLine();
-            report.AppendLine("---");
-            report.AppendLine();
-        }
-
-        private static void AppendTextBlock(StringBuilder report, string? text)
-        {
-            report.AppendLine("```text");
-            report.AppendLine(string.IsNullOrEmpty(text) ? "(空)" : text!);
-            report.AppendLine("```");
-        }
-
-        internal static string FindSettingsPath()
-        {
-            var explicitPath = Environment.GetEnvironmentVariable("ARR_AI_SETTINGS_PATH");
-            if (!string.IsNullOrWhiteSpace(explicitPath) && File.Exists(explicitPath))
-            {
-                return explicitPath;
-            }
-
-            var dir = new DirectoryInfo(AppContext.BaseDirectory);
-            for (var i = 0; i < 6 && dir is not null; ++i)
-            {
-                var candidate = Path.Combine(
-                    dir.FullName, "bin", "Debug", "net461", "AnotherReplayReader.ai_settings.json");
-                if (File.Exists(candidate))
-                {
-                    return candidate;
-                }
-                var directCandidate = Path.Combine(
-                    dir.FullName, "AnotherReplayReader.ai_settings.json");
-                if (File.Exists(directCandidate))
-                {
-                    return directCandidate;
-                }
-                dir = dir.Parent;
-            }
-            throw new InvalidOperationException(
-                "未找到 AnotherReplayReader.ai_settings.json；可用 ARR_AI_SETTINGS_PATH 指定");
-        }
-    }
-
-    internal static class OpenCodeGoGuardE2e
-    {
-        public static void Run()
-        {
-            if (Environment.GetEnvironmentVariable("ARR_AI_GUARD_E2E") != "1")
-            {
-                Console.WriteLine(
-                    "  [跳过] 未设置 ARR_AI_GUARD_E2E=1，跳过真实推理保护实验");
-                return;
-            }
-            RunAsync().GetAwaiter().GetResult();
-        }
-
-        private static async Task RunAsync()
-        {
-            var settingsPath = OpenCodeGoFakeToolCallTests.FindSettingsPath();
-            var settings = JsonSerializer.Deserialize<AiSettings>(
-                File.ReadAllText(settingsPath, Encoding.UTF8))
-                ?? throw new InvalidOperationException("AI 设置文件无法解析");
-            var provider = settings.Providers.FirstOrDefault(p =>
-                p.Name.Equals("OpenCodeGo", StringComparison.OrdinalIgnoreCase)
-                && p.Models.Any(m =>
-                    m.ModelId.Equals("deepseek-v4-flash", StringComparison.OrdinalIgnoreCase)))
-                ?? throw new InvalidOperationException(
-                    "当前配置中未找到 OpenCodeGo / deepseek-v4-flash 服务与模型");
-            var model = provider.Models.First(m =>
-                m.ModelId.Equals("deepseek-v4-flash", StringComparison.OrdinalIgnoreCase));
-            if (!model.IsStream)
-            {
-                Console.WriteLine(
-                    "  [跳过] OpenCodeGo/deepseek-v4-flash 当前配置为非流式模型，无法验证中断逻辑");
-                return;
-            }
-            if (string.IsNullOrWhiteSpace(provider.ApiKey))
-            {
-                throw new InvalidOperationException("OpenCodeGo 的 API Key 为空");
-            }
-
-            var guardModel = new AiModel
-            {
-                ModelId = model.ModelId,
-                DisplayName = model.DisplayName,
-                IsStream = model.IsStream,
-                ContextLength = model.ContextLength,
-                ContextBudget = model.ContextBudget,
-                ReasoningGuardEnabled = true,
-                ReasoningGuardTokenLimit = 1,
-                ExtraParameters = new Dictionary<string, object>(model.ExtraParameters)
-            };
-            var messages = ImmutableList<MainAIAnalyze.ChatMessage>.Empty
-                .Add(new MainAIAnalyze.ChatMessage(
-                    "system",
-                    "请先进行详细推理，再给出简短结论。"))
-                .Add(new MainAIAnalyze.ChatMessage(
-                    "user",
-                    "请逐条说明分析步骤，最后用一到两句话给出结论。"));
-
-            var analyzer = new MainAIAnalyze();
-            var result = await analyzer.CompleteAsync(
-                messages,
-                new AiRequestContext(provider, guardModel),
-                _ => { },
-                CancellationToken.None);
-            var report = new StringBuilder();
-            report.AppendLine("# AI 推理保护 E2E 报告");
-            report.AppendLine();
-            report.AppendLine($"- Provider：{provider.Name}");
-            report.AppendLine($"- Model：{guardModel.ModelId}");
-            report.AppendLine($"- ReasoningInterrupted：{result.ReasoningInterrupted}");
-            report.AppendLine($"- ContinuationApplied：{result.ContinuationApplied}");
-            report.AppendLine($"- Reasoning 长度：{result.Reasoning?.Length ?? 0}");
-            report.AppendLine($"- Response 长度：{result.Response.Length}");
-            report.AppendLine($"- FormatState：{result.ReasoningFormatState ?? "(无)"}");
-            if (!string.IsNullOrWhiteSpace(result.ReasoningContinuationError))
-            {
-                report.AppendLine($"- Error：{result.ReasoningContinuationError}");
-            }
-
-            var reportPath = Environment.GetEnvironmentVariable("ARR_AI_GUARD_REPORT_PATH");
-            if (!string.IsNullOrWhiteSpace(reportPath))
-            {
-                File.WriteAllText(reportPath, report.ToString(), new UTF8Encoding(false));
-                Console.WriteLine($"  [E2E-GUARD] 报告已写入：{reportPath}");
-            }
-            Console.WriteLine(
-                $"  [E2E-GUARD] interrupted={result.ReasoningInterrupted}; "
-                + $"continued={result.ContinuationApplied}; "
-                + $"reasoning={result.Reasoning?.Length ?? 0}; response={result.Response.Length}");
-        }
-    }
-
     internal static class UserReplayFactIndexReproTests
     {
         public static void Run()

PLAN_ai_analysis_v2.md

@@ -6,6 +6,13 @@
 - 版本：v2.2。WIP/CONTEXT/ADR 旧文档已删除；思维链回传实验单独记录在 `AI_REASONING_CONTINUATION_RESEARCH.md`。
 - 关联文档：[AI_REASONING_CONTINUATION_RESEARCH.md](AI_REASONING_CONTINUATION_RESEARCH.md)
 
+## 实施状态修订（推理保护已移除）
+
+- 实测表明：截断/修改 `reasoning_content` 并伪造 tool call 续写会影响输出质量，已取消该方案。
+- 当前代码不再包含 `AiReasoningGuard`、`ReasoningGuardEnabled`/`ReasoningGuardTokenLimit` 设置、推理保护 UI、`ReasoningGuard` 测试或相关 E2E。
+- 仍保留对模型返回的 `reasoning_content` 的流式展示与 usage 统计；但不会截断、改写、回传或让它触发额外请求。
+- 解决长思考的策略改为：提高输出 token 上限 + 让模型专注更短的时间范围（段内焦点窗口），同时仍提供尽量长的切片上下文并鼓励跨时间关联。
+
 ## 实施状态修订（2026-08-24 段内焦点窗口）
 
 - 新增「段内焦点窗口」设计：**数据层尽量宽**（整段机械切片按上下文上限提供），**注意力层聚焦窄时间窗**（每个切片再切分为若干分析窗口，每轮一个窗口作为重点）。
@@ -62,7 +69,7 @@
 - `AiV2.Tests` 仅保留 `OpenCodeGoFakeToolCallE2e` 专用测试：默认跳过，需同时设置 `ARR_AI_E2E=1` 与 `ARR_AI_E2E_TOOL=1`。
 - 实验结果、推荐方案与数据表格见 `AI_REASONING_CONTINUATION_RESEARCH.md`。
 
-### 2026-08-23 推理保护实现
+### 2026-08-23 推理保护实现（历史记录，后续已移除）
 
 - 主项目已实现默认关闭、模型级配置的推理保护：累计 `reasoning_content` 达到阈值后中断流式响应，并通过研究验证的 tool call 载体请求一次续写。
 - 续写只在保留推理末尾依次追加 `[INTERNAL_REASONING_TRUNCATED]` 与中文收尾句，不插入中间 checkpoint；首请求不携带 `tools`，续写请求才注入工具定义和 `tool_choice=none`。

Utils/AIAnalyze.cs

@@ -7,7 +7,6 @@ using System.Linq;
 using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Text;
-using System.Text.Encodings.Web;
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Threading;
@@ -26,48 +25,13 @@ namespace AnotherReplayReader.Utils
                  Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)] string? Content = null,
             [property: System.Text.Json.Serialization.JsonPropertyName("reasoning_content"),
              System.Text.Json.Serialization.JsonIgnore(
-                 Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)] string? ReasoningContent = null,
+                 Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)] string? ReasoningContent = null)
-            [property: System.Text.Json.Serialization.JsonPropertyName("tool_calls"),
-             System.Text.Json.Serialization.JsonIgnore(
-                 Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)] IReadOnlyList<ChatMessage.ToolCall>? ToolCalls = null,
-            [property: System.Text.Json.Serialization.JsonPropertyName("tool_call_id"),
-             System.Text.Json.Serialization.JsonIgnore(
-                 Condition = System.Text.Json.Serialization.JsonIgnoreCondition.WhenWritingNull)] string? ToolCallId = null)
         {
-            public sealed record ToolCall(
-                [property: System.Text.Json.Serialization.JsonPropertyName("id")] string Id,
-                [property: System.Text.Json.Serialization.JsonPropertyName("type")] string Type,
-                [property: System.Text.Json.Serialization.JsonPropertyName("function")] ToolCallFunction Function);
-
-            public sealed record ToolCallFunction(
-                [property: System.Text.Json.Serialization.JsonPropertyName("name")] string Name,
-                [property: System.Text.Json.Serialization.JsonPropertyName("arguments")] string Arguments);
-
             public static ChatMessage Assistant(string? content, string? reasoningContent = null) =>
                 new(
                     "assistant",
                     string.IsNullOrEmpty(content) ? null : content,
                     string.IsNullOrEmpty(reasoningContent) ? null : reasoningContent);
-
-            public static ChatMessage AssistantToolCall(
-                string? reasoningContent,
-                string toolCallId,
-                string toolName,
-                string arguments) =>
-                new(
-                    "assistant",
-                    null,
-                    string.IsNullOrEmpty(reasoningContent) ? null : reasoningContent,
-                    new[]
-                    {
-                        new ToolCall(
-                            toolCallId,
-                            "function",
-                            new ToolCallFunction(toolName, arguments))
-                    });
-
-            public static ChatMessage ToolResult(string toolCallId, string content) =>
-                new("tool", content, null, null, toolCallId);
         }
 
         public static string GetSystemPrompt(
@@ -1277,8 +1241,6 @@ PlayerA: 开始出兵
         public enum AIChunkType
         {
             Reasoning,
-            ReasoningGuard,
-            ReasoningGuardRequest,
             Content,
             Error,
             Json
@@ -1294,13 +1256,6 @@ PlayerA: 开始出兵
         {
             public string Response;
             public string Reasoning;
-            public string? ReasoningFormatState;
-            public bool ReasoningInterrupted;
-            public bool ContinuationApplied;
-            public string? ReasoningContinuationError;
-            public string? RequestJson;
-            public string? ReasoningOriginalRequestJson;
-            public string? ReasoningContinuationRequestJson;
             public int? PromptTokens;
             public int? CompletionTokens;
             public int? TotalTokens;
@@ -1329,226 +1284,19 @@ PlayerA: 开始出兵
             Action<AIChunk>? onChunk,
             CancellationToken cancellationToken)
         {
-            var model = requestContext.Model;
+            return await Task.Run(
-            var guardEnabled = model.ReasoningGuardEnabled && model.IsStream;
+                () => DoRequest(_http, messages, requestContext, onChunk, cancellationToken),
-            if (!guardEnabled)
-            {
-                return await Task.Run(
-                    () => DoRequest(_http, messages, requestContext, onChunk, cancellationToken),
-                    cancellationToken);
-            }
-
-            var tokenLimit = AiReasoningGuard.GetEffectiveTokenLimit(
-                requestContext.Provider, model);
-            var firstResult = await Task.Run(
-                () => DoRequest(
-                    _http,
-                    messages,
-                    requestContext,
-                    onChunk,
-                    cancellationToken,
-                    tokenLimit),
                 cancellationToken);
-            if (!firstResult.ReasoningInterrupted)
-            {
-                return firstResult;
-            }
-
-            var continuationMessages = BuildReasoningContinuationMessages(
-                messages,
-                firstResult.Reasoning,
-                tokenLimit,
-                out var formatState);
-            firstResult.ReasoningFormatState = formatState;
-            var continuationContext = BuildReasoningToolContext(requestContext);
-            var originalRequestJson = firstResult.RequestJson;
-            var continuationRequestJson = SerializeRequestParams(
-                continuationMessages,
-                continuationContext,
-                writeIndented: true);
-            var continuationPromptTokens = 0;
-            foreach (var message in continuationMessages)
-            {
-                continuationPromptTokens += AiContextBudget.EstimateTokens(
-                    (message.Content ?? string.Empty)
-                    + "\n"
-                    + (message.ReasoningContent ?? string.Empty));
-            }
-            var continuationCheck = AiContextBudget.CheckRequestUsage(
-                continuationPromptTokens,
-                requestContext.Provider,
-                continuationContext.Model);
-            var continuationBudgetWarning = string.Empty;
-            if (continuationCheck.Block)
-            {
-                var message = "续写请求未通过预算检查：" + continuationCheck.Message;
-                if (!string.IsNullOrEmpty(firstResult.Response))
-                {
-                    firstResult.ReasoningContinuationError = message;
-                    firstResult.ContinuationApplied = false;
-                    firstResult.ReasoningOriginalRequestJson = originalRequestJson;
-                    firstResult.ReasoningContinuationRequestJson =
-                        continuationRequestJson;
-                    return firstResult;
-                }
-                throw new InvalidOperationException(message);
-            }
-            if (!continuationCheck.IsOk)
-            {
-                continuationBudgetWarning = continuationCheck.Message;
-            }
-
-            onChunk?.Invoke(new AIChunk
-            {
-                Type = AIChunkType.ReasoningGuardRequest,
-                Text = JsonSerializer.Serialize(
-                    new
-                    {
-                        originalRequestJson,
-                        continuationRequestJson
-                    },
-                    new JsonSerializerOptions
-                    {
-                        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
-                    })
-            });
-
-            Result secondResult = default;
-            var continuationError = string.Empty;
-            try
-            {
-                secondResult = await Task.Run(
-                    () => DoRequest(
-                        _http,
-                        continuationMessages,
-                        continuationContext,
-                        onChunk,
-                        cancellationToken,
-                        tokenLimit),
-                    cancellationToken);
-            }
-            catch (Exception ex) when (
-                !cancellationToken.IsCancellationRequested
-                && ex is not OperationCanceledException)
-            {
-                continuationError = ex.Message;
-            }
-
-            if (!string.IsNullOrEmpty(continuationError))
-            {
-                if (!string.IsNullOrEmpty(firstResult.Response))
-                {
-                    firstResult.ReasoningContinuationError =
-                        "续写请求失败，已保留首次部分正文：" + continuationError;
-                    firstResult.ContinuationApplied = false;
-                    firstResult.ReasoningOriginalRequestJson = originalRequestJson;
-                    firstResult.ReasoningContinuationRequestJson =
-                        continuationRequestJson;
-                    return firstResult;
-                }
-
-                throw new InvalidOperationException(
-                    "推理续写失败，且没有可用的部分回答：" + continuationError);
-            }
-
-            if (secondResult.ReasoningInterrupted)
-            {
-                if (!string.IsNullOrEmpty(secondResult.Response))
-                {
-                    secondResult.ReasoningContinuationError =
-                        "续写仍超过推理上限，已使用续写部分正文。";
-                    secondResult.ContinuationApplied = false;
-                    secondResult.ReasoningOriginalRequestJson = originalRequestJson;
-                    secondResult.ReasoningContinuationRequestJson =
-                        continuationRequestJson;
-                    return secondResult;
-                }
-
-                if (!string.IsNullOrEmpty(firstResult.Response))
-                {
-                    firstResult.ReasoningContinuationError =
-                        "续写仍超过推理上限，已回退到首次部分正文。";
-                    firstResult.ContinuationApplied = false;
-                    firstResult.ReasoningOriginalRequestJson = originalRequestJson;
-                    firstResult.ReasoningContinuationRequestJson =
-                        continuationRequestJson;
-                    return firstResult;
-                }
-
-                throw new InvalidOperationException(
-                    "推理续写仍超过上限，且没有可用的部分回答。");
-            }
-
-            secondResult.ContinuationApplied = true;
-            secondResult.ReasoningOriginalRequestJson = originalRequestJson;
-            secondResult.ReasoningContinuationRequestJson =
-                continuationRequestJson;
-            if (!string.IsNullOrEmpty(continuationBudgetWarning))
-            {
-                secondResult.ReasoningContinuationError = continuationBudgetWarning;
-            }
-            return secondResult;
-        }
-
-        private static ImmutableList<ChatMessage> BuildReasoningContinuationMessages(
-            ImmutableList<ChatMessage> messages,
-            string reasoning,
-            int tokenLimit,
-            out string formatState)
-        {
-            var prepared = AiReasoningGuard.PrepareReasoning(reasoning, tokenLimit);
-            formatState = prepared.FormatState;
-            var instruction = AiReasoningGuard.BuildToolInstruction();
-            var arguments = JsonSerializer.Serialize(new { instruction });
-            return messages
-                .Add(ChatMessage.AssistantToolCall(
-                    prepared.Text,
-                    AiReasoningGuard.ToolCallId,
-                    AiReasoningGuard.ToolName,
-                    arguments))
-                .Add(ChatMessage.ToolResult(
-                    AiReasoningGuard.ToolCallId,
-                    AiReasoningGuard.BuildToolResult()));
-        }
-
-        private static AiRequestContext BuildReasoningToolContext(
-            AiRequestContext context)
-        {
-            var model = new AiModel
-            {
-                ModelId = context.Model.ModelId,
-                DisplayName = context.Model.DisplayName,
-                IsStream = context.Model.IsStream,
-                ContextLength = context.Model.ContextLength,
-                ContextBudget = context.Model.ContextBudget,
-                ReasoningGuardEnabled = context.Model.ReasoningGuardEnabled,
-                ReasoningGuardTokenLimit = context.Model.ReasoningGuardTokenLimit,
-                ExtraParameters = new Dictionary<string, object>(
-                    context.Model.ExtraParameters)
-            };
-            model.ExtraParameters["tools"] =
-                new[] { AiReasoningGuard.BuildToolDefinition() };
-            model.ExtraParameters["tool_choice"] = "none";
-            return new AiRequestContext(context.Provider, model);
         }
 
         private static string SerializeRequestParams(
             ImmutableList<ChatMessage> messages,
-            AiRequestContext context,
+            AiRequestContext context)
-            bool writeIndented = false)
         {
             var requestParams = ProcessRequestParams(
                 messages,
                 context.BuildRequestParams());
-            return JsonSerializer.Serialize(
+            return JsonSerializer.Serialize(requestParams);
-                requestParams,
-                writeIndented
-                    ? new JsonSerializerOptions
-                    {
-                        WriteIndented = true,
-                        Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
-                    }
-                    : null);
         }
 
         private static async Task<Result> DoRequest(
@@ -1556,8 +1304,7 @@ PlayerA: 开始出兵
             ImmutableList<ChatMessage> messages,
             AiRequestContext requestContext,
             Action<AIChunk>? onChunk,
-            CancellationToken cancellationToken,
+            CancellationToken cancellationToken)
-            int? reasoningTokenLimit = null)
         {
             var provider = requestContext.Provider;
             var isStream = requestContext.Model.IsStream;
@@ -1579,8 +1326,6 @@ PlayerA: 开始出兵
             var fullBuilder = new StringBuilder();
             var reasoningBuilder = new StringBuilder();
             var result = new Result();
-            result.RequestJson = inputJson;
-            var interrupted = false;
 
             // 根据模式分别读取响应
             // if response.Content.Headers.ContentType is "text/event-stream", then it's stream mode, otherwise it's non-stream mode
@@ -1625,20 +1370,6 @@ PlayerA: 开始出兵
                         reasoningBuilder,
                         result,
                         onChunk);
-
-                    if (reasoningTokenLimit is { } guardLimit
-                        && guardLimit > 0
-                        && AiContextBudget.EstimateTokens(reasoningBuilder.ToString())
-                            >= guardLimit)
-                    {
-                        interrupted = true;
-                        onChunk?.Invoke(new AIChunk
-                        {
-                            Type = AIChunkType.ReasoningGuard,
-                            Text = "检测到推理内容超过保护阈值，正在请求 AI 尽快收尾..."
-                        });
-                        break;
-                    }
                 }
             }
             else
@@ -1656,14 +1387,6 @@ PlayerA: 开始出兵
 
             response.EnsureSuccessStatusCode();
             result.Reasoning = reasoningBuilder.ToString();
-            result.ReasoningFormatState = AiReasoningGuard.DescribeFormatState(
-                result.Reasoning);
-            if (interrupted)
-            {
-                result.Response = fullBuilder.ToString();
-                result.ReasoningInterrupted = true;
-                return result;
-            }
 
             if (fullBuilder.Length == 0)
             {

Utils/AiReasoningGuard.cs

@@ -1,181 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace AnotherReplayReader.Utils
-{
-    /// <summary>
-    /// 推理保护策略：截断 reasoning_content，并通过研究验证过的 tool call 历史
-    /// 让模型从已有推理自然收尾。
-    /// </summary>
-    internal static class AiReasoningGuard
-    {
-        public const string ToolName = "analysis_hint";
-        public const string TruncationMarker = "[INTERNAL_REASONING_TRUNCATED]";
-        public const string WrapUpStatement =
-            "我已经整理出足够的信息，现在立即结束内部推理，直接输出最终回答。";
-        public const string ToolCallId = "call_reasoning_guard";
-        public const int MinTokenLimit = 4096;
-
-        public static int GetEffectiveTokenLimit(AiProvider provider, AiModel model)
-        {
-            if (model.ReasoningGuardTokenLimit is { } explicitLimit && explicitLimit > 0)
-            {
-                return explicitLimit;
-            }
-
-            return Math.Max(MinTokenLimit, provider.DefaultMaxTokens / 2);
-        }
-
-        public static string BuildToolInstruction()
-        {
-            return "请继续你本次 tool_calls 消息中携带的 reasoning_content。"
-                + "你已经完成了足够的分析，现在进入收尾阶段："
-                + "立即停止继续展开推理，不要再逐条枚举输入事件，不要再做新的检查，也不要继续“再确认一下”。"
-                + "请直接输出最终结果，包括正文、[机器可读声明] 和 [小结]。"
-                + "如果某些细节不确定，就用证据等级说明。";
-        }
-
-        public static string BuildToolResult()
-        {
-            return "工具结果：" + BuildToolInstruction()
-                + "\n你本次 tool_calls 消息中携带的 reasoning_content 的最后一句已经宣告收尾，"
-                + "请立即执行，不要继续讨论是否还需要分析。"
-                + "\n这份推理内容末尾有内部标记 " + TruncationMarker
-                + "，表示前面的推理已被安全截断。"
-                + "\n如果旧推理中存在未完成的 JSON、JSON 代码块或其他结构性内容，"
-                + "请丢弃其未完成部分，并重新输出完整、格式正确的结果。"
-                + "\n不要复述该标记。";
-        }
-
-        public static object BuildToolDefinition()
-        {
-            return new
-            {
-                type = "function",
-                function = new
-                {
-                    name = ToolName,
-                    description = "为当前内部推理提供收尾提示。",
-                    parameters = new
-                    {
-                        type = "object",
-                        properties = new
-                        {
-                            instruction = new
-                            {
-                                type = "string",
-                                description = "模型应遵循的收尾提示。"
-                            }
-                        },
-                        required = new[] { "instruction" }
-                    }
-                }
-            };
-        }
-
-        /// <summary>
-        /// 保留尽可能多的推理前缀，并在末尾追加截断标记与收尾决定。
-        /// </summary>
-        public static (string Text, string FormatState) PrepareReasoning(
-            string reasoning,
-            int tokenLimit)
-        {
-            if (string.IsNullOrEmpty(reasoning))
-            {
-                return ("\n\n" + TruncationMarker + "\n\n" + WrapUpStatement, "无格式问题");
-            }
-
-            var maxIndex = FindMaxPrefixIndexByTokens(reasoning, tokenLimit);
-            var boundary = FindSafeBoundary(reasoning, maxIndex);
-            var prefix = reasoning.Substring(0, boundary).TrimEnd();
-            var formatState = DescribeFormatState(prefix);
-            return (
-                prefix + "\n\n" + TruncationMarker + "\n\n" + WrapUpStatement,
-                formatState);
-        }
-
-        public static string DescribeFormatState(string text)
-        {
-            var lines = new List<string>();
-            var codeFenceCount = CountOccurrences(text, "```");
-            if (codeFenceCount % 2 == 1)
-            {
-                lines.Add("代码围栏未闭合");
-            }
-
-            var braceDelta = CountDifference(text, '{', '}');
-            var bracketDelta = CountDifference(text, '[', ']');
-            if (braceDelta > 0 || bracketDelta > 0)
-            {
-                lines.Add("JSON/方括号结构可能未闭合");
-            }
-
-            return lines.Count == 0 ? "无格式问题" : string.Join("；", lines);
-        }
-
-        private static int FindMaxPrefixIndexByTokens(string text, int tokenLimit)
-        {
-            var low = 0;
-            var high = text.Length;
-            while (low < high)
-            {
-                var mid = (low + high + 1) / 2;
-                if (AiContextBudget.EstimateTokens(text.Substring(0, mid)) <= tokenLimit)
-                {
-                    low = mid;
-                }
-                else
-                {
-                    high = mid - 1;
-                }
-            }
-            return low;
-        }
-
-        private static int FindSafeBoundary(string text, int maxIndex)
-        {
-            const int searchBack = 160;
-            var start = Math.Max(0, maxIndex - searchBack);
-            for (var i = maxIndex - 1; i >= start; --i)
-            {
-                var c = text[i];
-                if (c == '\n' || c == '。' || c == '；' || c == '，'
-                    || c == ':' || c == ';' || c == '.'
-                    || c == ',' || c == ')' || c == '}' || c == ']')
-                {
-                    return i + 1;
-                }
-            }
-            return maxIndex;
-        }
-
-        private static int CountOccurrences(string text, string value)
-        {
-            var count = 0;
-            var index = 0;
-            while ((index = text.IndexOf(value, index, StringComparison.Ordinal)) >= 0)
-            {
-                count++;
-                index += value.Length;
-            }
-            return count;
-        }
-
-        private static int CountDifference(string text, char open, char close)
-        {
-            var delta = 0;
-            foreach (var c in text)
-            {
-                if (c == open)
-                {
-                    delta++;
-                }
-                else if (c == close)
-                {
-                    delta--;
-                }
-            }
-            return delta;
-        }
-    }
-}

Utils/AiSettings.cs

@@ -48,17 +48,6 @@ namespace AnotherReplayReader
         /// </summary>
         public int? ContextBudget { get; set; }
 
-        /// <summary>
-        /// 推理保护：累计 reasoning_content 达到阈值时中断流式响应并请求一次续写。
-        /// 默认关闭。
-        /// </summary>
-        public bool ReasoningGuardEnabled { get; set; }
-
-        /// <summary>
-        /// 推理保护的 token 阈值。null 或 0 使用派生值 max(4096, provider.DefaultMaxTokens / 2)。
-        /// </summary>
-        public int? ReasoningGuardTokenLimit { get; set; }
-
         public Dictionary<string, object> ExtraParameters { get; set; } = [];
 
         /// <summary>