fix(cqrs-benchmarks): 对齐 request lifetime 宿主路径

- 新增 request lifetime benchmark 的 generated registry，提供最小 generated request descriptor。

- 更新 RequestLifetimeBenchmarks 使用 generated-provider 宿主，并保留 Singleton/Transient 生命周期矩阵控制。

- 补充 dispatcher 缓存清理，避免生命周期矩阵之间互相污染 benchmark 结果。

GFramework.Cqrs.Benchmarks/Messaging/GeneratedRequestLifetimeBenchmarkRegistry.cs

@@ -0,0 +1,112 @@
+// Copyright (c) 2025-2026 GeWuYou
+// SPDX-License-Identifier: Apache-2.0
+
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Threading;
+using System.Threading.Tasks;
+using GFramework.Core.Abstractions.Logging;
+using GFramework.Cqrs.Abstractions.Cqrs;
+using Microsoft.Extensions.DependencyInjection;
+
+[assembly: GFramework.Cqrs.CqrsHandlerRegistryAttribute(
+    typeof(GFramework.Cqrs.Benchmarks.Messaging.GeneratedRequestLifetimeBenchmarkRegistry))]
+
+namespace GFramework.Cqrs.Benchmarks.Messaging;
+
+/// <summary>
+///     为 request 生命周期矩阵 benchmark 提供 hand-written generated registry，
+///     以便在默认 generated-provider 宿主路径上比较不同 handler 生命周期的 dispatch 成本。
+/// </summary>
+public sealed class GeneratedRequestLifetimeBenchmarkRegistry :
+    GFramework.Cqrs.ICqrsHandlerRegistry,
+    GFramework.Cqrs.ICqrsRequestInvokerProvider,
+    GFramework.Cqrs.IEnumeratesCqrsRequestInvokerDescriptors
+{
+    private static readonly GFramework.Cqrs.CqrsRequestInvokerDescriptor Descriptor =
+        new(
+            typeof(IRequestHandler<
+                RequestLifetimeBenchmarks.BenchmarkRequest,
+                RequestLifetimeBenchmarks.BenchmarkResponse>),
+            typeof(GeneratedRequestLifetimeBenchmarkRegistry).GetMethod(
+                nameof(InvokeBenchmarkRequestHandler),
+                BindingFlags.Public | BindingFlags.Static)
+            ?? throw new InvalidOperationException("Missing generated request lifetime benchmark method."));
+
+    private static readonly IReadOnlyList<GFramework.Cqrs.CqrsRequestInvokerDescriptorEntry> Descriptors =
+    [
+        new GFramework.Cqrs.CqrsRequestInvokerDescriptorEntry(
+            typeof(RequestLifetimeBenchmarks.BenchmarkRequest),
+            typeof(RequestLifetimeBenchmarks.BenchmarkResponse),
+            Descriptor)
+    ];
+
+    /// <summary>
+    ///     参与程序集注册入口，但不在这里直接写入 handler 生命周期。
+    /// </summary>
+    /// <param name="services">当前 generated registry 拥有的服务集合。</param>
+    /// <param name="logger">用于记录 generated registry 注册行为的日志器。</param>
+    /// <remarks>
+    ///     生命周期矩阵需要让 benchmark 主体显式控制 `Singleton / Transient` 变量。
+    ///     因此 registry 只负责暴露 generated descriptor，不在这里抢先注册 handler，避免把默认单例注册混入比较结果。
+    /// </remarks>
+    public void Register(IServiceCollection services, ILogger logger)
+    {
+        ArgumentNullException.ThrowIfNull(services);
+        ArgumentNullException.ThrowIfNull(logger);
+
+        logger.Debug("Registered generated request lifetime benchmark descriptors.");
+    }
+
+    /// <summary>
+    ///     返回当前 provider 暴露的全部 generated request invoker 描述符。
+    /// </summary>
+    /// <returns>当前 benchmark 需要的 request invoker 描述符集合。</returns>
+    public IReadOnlyList<GFramework.Cqrs.CqrsRequestInvokerDescriptorEntry> GetDescriptors()
+    {
+        return Descriptors;
+    }
+
+    /// <summary>
+    ///     为目标请求/响应类型对返回 generated request invoker 描述符。
+    /// </summary>
+    /// <param name="requestType">待匹配的请求类型。</param>
+    /// <param name="responseType">待匹配的响应类型。</param>
+    /// <param name="descriptor">命中时返回的 generated descriptor。</param>
+    /// <returns>命中当前 benchmark 的请求/响应类型对时返回 <see langword="true" />。</returns>
+    public bool TryGetDescriptor(
+        Type requestType,
+        Type responseType,
+        out GFramework.Cqrs.CqrsRequestInvokerDescriptor? descriptor)
+    {
+        if (requestType == typeof(RequestLifetimeBenchmarks.BenchmarkRequest) &&
+            responseType == typeof(RequestLifetimeBenchmarks.BenchmarkResponse))
+        {
+            descriptor = Descriptor;
+            return true;
+        }
+
+        descriptor = null;
+        return false;
+    }
+
+    /// <summary>
+    ///     模拟 generated request invoker provider 为生命周期矩阵 benchmark 产出的开放静态调用入口。
+    /// </summary>
+    /// <param name="handler">当前请求对应的 handler 实例。</param>
+    /// <param name="request">待分发的 request。</param>
+    /// <param name="cancellationToken">调用方传入的取消令牌。</param>
+    /// <returns>交给目标 request handler 处理后的响应任务。</returns>
+    public static ValueTask<RequestLifetimeBenchmarks.BenchmarkResponse> InvokeBenchmarkRequestHandler(
+        object handler,
+        object request,
+        CancellationToken cancellationToken)
+    {
+        var typedHandler = (IRequestHandler<
+            RequestLifetimeBenchmarks.BenchmarkRequest,
+            RequestLifetimeBenchmarks.BenchmarkResponse>)handler;
+        var typedRequest = (RequestLifetimeBenchmarks.BenchmarkRequest)request;
+        return typedHandler.Handle(typedRequest, cancellationToken);
+    }
+}

GFramework.Cqrs.Benchmarks/Messaging/RequestLifetimeBenchmarks.cs

@@ -85,14 +85,18 @@ public class RequestLifetimeBenchmarks
             MinLevel = LogLevel.Fatal
         };
         Fixture.Setup($"RequestLifetime/{Lifetime}", handlerCount: 1, pipelineCount: 0);
+        BenchmarkDispatcherCacheHelper.ClearDispatcherCaches();
 
         _baselineHandler = new BenchmarkRequestHandler();
         _request = new BenchmarkRequest(Guid.NewGuid());
 
         _container = BenchmarkHostFactory.CreateFrozenGFrameworkContainer(container =>
         {
+            BenchmarkHostFactory.RegisterGeneratedBenchmarkRegistry<GeneratedRequestLifetimeBenchmarkRegistry>(container);
             RegisterGFrameworkHandler(container, Lifetime);
         });
+        // 容器内已提前保留默认 runtime 以支撑 generated registry 接线；
+        // 这里额外创建带生命周期后缀的 runtime，只是为了区分不同 benchmark 矩阵的 dispatcher 日志。
         _runtime = GFramework.Cqrs.CqrsRuntimeFactory.CreateRuntime(
             _container,
             LoggerFactoryResolver.Provider.CreateLogger(nameof(RequestLifetimeBenchmarks) + "." + Lifetime));
@@ -111,7 +115,14 @@ public class RequestLifetimeBenchmarks
     [GlobalCleanup]
     public void Cleanup()
     {
-        BenchmarkCleanupHelper.DisposeAll(_container, _serviceProvider);
+        try
+        {
+            BenchmarkCleanupHelper.DisposeAll(_container, _serviceProvider);
+        }
+        finally
+        {
+            BenchmarkDispatcherCacheHelper.ClearDispatcherCaches();
+        }
     }
 
     /// <summary>
@@ -146,6 +157,10 @@ public class RequestLifetimeBenchmarks
     /// </summary>
     /// <param name="container">当前 benchmark 拥有并负责释放的容器。</param>
     /// <param name="lifetime">待比较的 handler 生命周期。</param>
+    /// <remarks>
+    ///     先通过 generated registry 提供静态 descriptor，再显式覆盖 handler 生命周期，
+    ///     可以把比较变量收敛到 handler 解析成本，而不是 descriptor 发现路径本身。
+    /// </remarks>
     private static void RegisterGFrameworkHandler(MicrosoftDiContainer container, HandlerLifetime lifetime)
     {
         ArgumentNullException.ThrowIfNull(container);