Add AOT compatibility test app project

Add a console application that references all three library packages
(ModelContextProtocol.Core, ModelContextProtocol, ModelContextProtocol.AspNetCore)
and is published with PublishAot=true. This ensures that any AOT/trimming
warnings from the libraries are caught during CI, following the pattern from
dotnet/extensions.

Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>

Author: Copilot

.github/workflows/ci-build-test.yml

@@ -68,6 +68,10 @@ jobs:
     - name: 🧪 Test
       run: make test CONFIGURATION=${{ matrix.configuration }}
 
+    - name: 🧪 AOT Compatibility
+      if: matrix.configuration == 'Release'
+      run: dotnet publish tests/ModelContextProtocol.AotCompatibility.TestApp/ModelContextProtocol.AotCompatibility.TestApp.csproj --configuration Release
+
     - name: 📦 Pack
       if: matrix.configuration == 'Release'
       run: make pack CONFIGURATION=${{ matrix.configuration }}

ModelContextProtocol.slnx

@@ -70,6 +70,7 @@
   </Folder>
   <Folder Name="/tests/">
     <Project Path="tests/ModelContextProtocol.Analyzers.Tests/ModelContextProtocol.Analyzers.Tests.csproj" />
+    <Project Path="tests/ModelContextProtocol.AotCompatibility.TestApp/ModelContextProtocol.AotCompatibility.TestApp.csproj" />
     <Project Path="tests/ModelContextProtocol.AspNetCore.Tests/ModelContextProtocol.AspNetCore.Tests.csproj" />
     <Project Path="tests/ModelContextProtocol.ConformanceClient/ModelContextProtocol.ConformanceClient.csproj" />
     <Project Path="tests/ModelContextProtocol.ConformanceServer/ModelContextProtocol.ConformanceServer.csproj" />

tests/ModelContextProtocol.AotCompatibility.TestApp/ModelContextProtocol.AotCompatibility.TestApp.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <!-- Ensure TargetFrameworks is not inherited -->
+    <TargetFrameworks></TargetFrameworks>
+    <PublishAot>true</PublishAot>
+    <TrimmerSingleWarn>false</TrimmerSingleWarn>
+    <!-- Suppress the experimental tasks warning -->
+    <NoWarn>$(NoWarn);MCPEXP001</NoWarn>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\ModelContextProtocol.Core\ModelContextProtocol.Core.csproj" />
+    <ProjectReference Include="..\..\src\ModelContextProtocol\ModelContextProtocol.csproj" />
+    <ProjectReference Include="..\..\src\ModelContextProtocol.AspNetCore\ModelContextProtocol.AspNetCore.csproj" />
+
+    <TrimmerRootAssembly Include="ModelContextProtocol.Core" />
+    <TrimmerRootAssembly Include="ModelContextProtocol" />
+    <TrimmerRootAssembly Include="ModelContextProtocol.AspNetCore" />
+  </ItemGroup>
+
+</Project>

tests/ModelContextProtocol.AotCompatibility.TestApp/Program.cs

@@ -0,0 +1,4 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+System.Console.WriteLine("Success!");