fix(cli): add workaround for PackAsTool + net10.0-windows (#396)

Add MSBuild targets that temporarily clear TargetPlatformIdentifier during
pack validation, allowing PackAsTool to work with UseWindowsForms.

Workaround from: dotnet/sdk#12055 (comment)

This allows the CLI to remain a dotnet tool while keeping the system tray feature.

Co-authored-by: Stefan Broenner <[email protected]>

Author: sbroenne

src/ExcelMcp.CLI/ExcelMcp.CLI.csproj

@@ -100,4 +100,19 @@
     <InternalsVisibleTo Include="Sbroenne.ExcelMcp.CLI.Tests" />
   </ItemGroup>
 
+  <!-- Workaround for NETSDK1146: PackAsTool doesn't support net10.0-windows -->
+  <!-- See: https://github.com/dotnet/sdk/issues/12055#issuecomment-2125927648 -->
+  <Target Name="HackBeforePackToolValidation" BeforeTargets="_PackToolValidation">
+    <PropertyGroup>
+      <TargetPlatformIdentifier></TargetPlatformIdentifier>
+      <TargetPlatformMoniker></TargetPlatformMoniker>
+    </PropertyGroup>
+  </Target>
+
+  <Target Name="HackAfterPackToolValidation" AfterTargets="_PackToolValidation" BeforeTargets="PackTool">
+    <PropertyGroup>
+      <TargetPlatformIdentifier>Windows</TargetPlatformIdentifier>
+    </PropertyGroup>
+  </Target>
+
 </Project>