Update .NET SDK from 8.0 to 10.0

Author: Copilot

.github/copilot-instructions.md

@@ -2,27 +2,27 @@
 
 ## Build & Test
 
-Requires .NET SDK 8.0+. Use `dotnet` directly for building and testing — it's faster and
+Requires .NET SDK 10.0+. Use `dotnet` directly for building and testing — it's faster and
 requires no extra tooling. The `Invoke-Build` script requires the `InvokeBuild` and `platyPS`
 PowerShell modules (platyPS is `#Requires`'d at the top, so the whole script fails without it),
 and is mainly needed to assemble the full PowerShell module for release.
 
 ```powershell
 # Build (run both; Hosting depends on the core library)
 dotnet publish src/PowerShellEditorServices/PowerShellEditorServices.csproj -f netstandard2.0
-dotnet publish src/PowerShellEditorServices.Hosting/PowerShellEditorServices.Hosting.csproj -f net8.0
+dotnet publish src/PowerShellEditorServices.Hosting/PowerShellEditorServices.Hosting.csproj -f net10.0
 
 # Run all unit tests
-dotnet test test/PowerShellEditorServices.Test/ --framework net8.0
+dotnet test test/PowerShellEditorServices.Test/ --framework net10.0
 
 # Run a single test by name
-dotnet test test/PowerShellEditorServices.Test/ --framework net8.0 --filter "FullyQualifiedName~CompletesCommandInFile"
+dotnet test test/PowerShellEditorServices.Test/ --framework net10.0 --filter "FullyQualifiedName~CompletesCommandInFile"
 
 # Run tests by trait category
-dotnet test test/PowerShellEditorServices.Test/ --framework net8.0 --filter "Category=Completions"
+dotnet test test/PowerShellEditorServices.Test/ --framework net10.0 --filter "Category=Completions"
 
 # Run E2E tests
-dotnet test test/PowerShellEditorServices.Test.E2E/ --framework net8.0
+dotnet test test/PowerShellEditorServices.Test.E2E/ --framework net10.0
 ```
 
 For assembling the full module or running the complete CI suite (including Windows PowerShell
@@ -48,11 +48,11 @@ Protocol (DAP)** server for PowerShell, consumed by VS Code and other editors.
 - **`src/PowerShellEditorServices`** (`netstandard2.0`) — Core library containing all LSP/DAP
   handlers, services, and the PowerShell execution engine. Namespace:
   `Microsoft.PowerShell.EditorServices`.
-- **`src/PowerShellEditorServices.Hosting`** (`net8.0`, `net462`) — Entry point layer that loads
+- **`src/PowerShellEditorServices.Hosting`** (`net10.0`, `net462`) — Entry point layer that loads
   PSES into a PowerShell process via `StartEditorServicesCommand`. Uses a custom
   `AssemblyLoadContext` (`PsesLoadContext`) on .NET Core to isolate dependencies.
 - **`module/PowerShellEditorServices/`** — The shipped PowerShell module. The build assembles
-  compiled binaries into `bin/Core/` (net8.0) and `bin/Desktop/` (net462). The module manifest
+  compiled binaries into `bin/Core/` (net10.0) and `bin/Desktop/` (net462). The module manifest
   loads the appropriate DLL based on PowerShell edition.
 
 ### Key Services (registered in `PsesServiceCollectionExtensions`)
@@ -136,7 +136,7 @@ Because of that, treat any change to an existing `public` member as potentially
 ### Multi-targeting
 
 The core library targets `netstandard2.0` for compatibility with both .NET Core and .NET
-Framework. The hosting project and tests dual-target `net8.0` and `net462` (Windows PowerShell
+Framework. The hosting project and tests dual-target `net10.0` and `net462` (Windows PowerShell
 5.1). Non-Windows platforms skip `net462` targets.
 
 ## Pull Request Labels

PowerShellEditorServices.build.ps1

@@ -40,7 +40,7 @@ $script:BuildInfoPath = "src/PowerShellEditorServices.Hosting/BuildInfo.cs"
 
 $script:NetFramework = @{
     PS51     = 'net462'
-    PS74     = 'net8.0'
+    PS74     = 'net10.0'
     Standard = 'netstandard2.0'
 }
 
@@ -58,7 +58,7 @@ Task FindDotNet {
 
     # Strip out semantic version metadata so it can be cast to `Version`
     [Version]$existingVersion, $null = (dotnet --version) -split " " -split "-"
-    Assert ($existingVersion -ge [Version]("8.0")) ".NET SDK 8.0 or higher is required, please update it: https://aka.ms/dotnet-cli"
+    Assert ($existingVersion -ge [Version]("10.0")) ".NET SDK 10.0 or higher is required, please update it: https://aka.ms/dotnet-cli"
 
     Write-Build DarkGreen "Using dotnet v$(dotnet --version) at path $((Get-Command dotnet).Source)"
 }

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.416",
+    "version": "10.0.301",
     "rollForward": "latestFeature",
     "allowPrerelease": false
   }

src/PowerShellEditorServices.Hosting/PowerShellEditorServices.Hosting.csproj

@@ -3,7 +3,7 @@
     Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), PowerShellEditorServices.Common.props))\PowerShellEditorServices.Common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net462</TargetFrameworks>
+    <TargetFrameworks>net10.0;net462</TargetFrameworks>
     <AssemblyName>Microsoft.PowerShell.EditorServices.Hosting</AssemblyName>
   </PropertyGroup>
 

test/PowerShellEditorServices.Test.E2E/PowerShellEditorServices.Test.E2E.csproj

@@ -3,7 +3,7 @@
     Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), PowerShellEditorServices.Common.props))\PowerShellEditorServices.Common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0</TargetFrameworks>
+    <TargetFrameworks>net10.0</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 

test/PowerShellEditorServices.Test/PowerShellEditorServices.Test.csproj

@@ -2,7 +2,7 @@
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), PowerShellEditorServices.Common.props))\PowerShellEditorServices.Common.props" />
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net462</TargetFrameworks>
+    <TargetFrameworks>net10.0;net462</TargetFrameworks>
     <AssemblyName>Microsoft.PowerShell.EditorServices.Test</AssemblyName>
     <TargetPlatform>x64</TargetPlatform>
   </PropertyGroup>
@@ -17,12 +17,12 @@
   </ItemGroup>
 
   <!-- The Hosting assembly (and thus PsesLoadContext) only exists on .NET Core. -->
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net8.0' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net10.0' ">
     <ProjectReference Include="..\..\src\PowerShellEditorServices.Hosting\PowerShellEditorServices.Hosting.csproj" />
   </ItemGroup>
 
   <!-- PowerShell 7.4.x -->
-  <ItemGroup Condition=" '$(TargetFramework)' == 'net8.0' ">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'net10.0' ">
     <PackageReference Include="Microsoft.PowerShell.SDK" />
   </ItemGroup>