Package repository style config files in SDK artifacts

[Copilot]

This change investigates and implements distribution of repository style/config files from the MSBuild SDK package. The core SDK package now carries .editorconfig, .gitattributes, and .gitignore as package data assets.

• What changed (SDK packaging)

  • Added a pack-time staging target in Sdk.Common.PackageContent.targets to copy dotfiles from $(SolutionDir) into intermediate output.
  • Included staged files in the nupkg under _PackageData/ as:
    • _PackageData/editorconfig
    • _PackageData/gitattributes
    • _PackageData/gitignore

• What changed (regression coverage)

  • Added SdkPackageContentTests to assert the packed ktsu.Sdk nupkg:
    • contains all three style/config assets
    • preserves exact file contents from repository root

• Implementation snippet

  <Target Name="_KtsuStageStyleConfigPackageFiles" BeforeTargets="_GetPackageFiles">
    <Copy SourceFiles="$(SolutionDir)\.editorconfig" DestinationFiles="$(IntermediateOutputPath)ktsu.package-data\editorconfig" Condition="Exists('$(SolutionDir)\.editorconfig')" />
    <ItemGroup>
      <None Include="$(IntermediateOutputPath)ktsu.package-data\editorconfig"
            Pack="true"
            PackagePath="_PackageData/"
            Link=".editorconfig"
            Visible="false" />
    </ItemGroup>
  </Target>

• Fixes Investigate distributing style config files #21

[matt-edmondson]

@copilot how do these files get applied to sdk consumers?

[Copilot]

@copilot how do these files get applied to sdk consumers?

They aren’t auto-applied by the current change. Right now the SDK package just carries them as data assets under _PackageData/ (editorconfig, gitattributes, gitignore). MSBuild doesn’t automatically copy or merge those into a consumer repo; a separate target/tooling step would be needed if we want automatic application to consumer projects.

[matt-edmondson]

Can I have a way to auto update the consumer versions of those files with a way to opt-out? @copilot

[matt-edmondson]

@copilot Can I have a way to auto update the consumer versions of those files with a way to opt-out?

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Can I have a way to auto update the consumer versions of those files with a way to opt-out? @copilot

Implemented in a5512d0. The SDK now auto-syncs existing solution-root .editorconfig, .gitattributes, and .gitignore from packaged _PackageData during build. You can opt out with <KtsuSyncStyleConfigFiles>false</KtsuSyncStyleConfigFiles>.

@copilot Can I have a way to auto update the consumer versions of those files with a way to opt-out?

Implemented in a5512d0. Auto-sync is now built in, and opt-out is supported via <KtsuSyncStyleConfigFiles>false</KtsuSyncStyleConfigFiles>.

[matt-edmondson]

@copilot the file header template in the editorconfig needs to use the copyright info of the consumer, rather than stomping it with ktsu.dev

[matt-edmondson]

@copilot add .runsettings