Simplify local development and streamline repository infrastructure

[Tera (0x5bfa)]

Context

I understand that the repository's original author created Library.Template to make repository setup easier and more consistent. That is a useful goal, and this is not a criticism of the template or of using it across repositories.

By "focused" here, I mean the day-to-day contributor workflow: CsWin32 is a source generator with build/package integration and a substantial test matrix. Those parts have real complexity, but contributors should be able to work with the repository through Visual Studio or the standard .NET CLI without first understanding a general-purpose bootstrap and template-update layer. For this repository, the maintenance and setup overhead of that layer appears to outweigh its benefits.

Changes

• Migrate Microsoft.Windows.CsWin32.sln to Microsoft.Windows.CsWin32.slnx and update the related documentation and build configuration.
• Replace the local init.cmd / init.ps1 bootstrap flow with the SDK specified in global.json and standard dotnet commands.
• Update GitHub Actions and Azure Pipelines to install SDKs and authenticate to feeds through their native setup tasks, then invoke dotnet directly.
• Separate local package sources from the official Azure Pipelines feed configuration. Local builds use NuGet.org, with explicit source mapping for test packages available only from Microsoft's public feed.
• Scope MicroBuild and SBOM configuration to official or explicitly enabled MicroBuild builds.
• Remove the Library.Template update automation and associated unused helpers, along with obsolete pipeline definitions, an unreferenced GitHub Action, and unused editor/tool configuration.

The documented local workflow is:

dotnet build
dotnet test --filter "TestCategory!=HighMemory&TestCategory!=RequiresHardware"
dotnet pack -c Release

Official build and release infrastructure

The official Azure Pipelines path retains 1ESPT/MicroBuild integration, signing, SBOM generation, artifact publishing, and release/insertion workflows. It continues to use the Microsoft feed configuration and existing MicroBuild tasks.

Validation

• Release build and Visual Studio MSBuild build of the SLNX solution.
• dotnet pack and dotnet pack --no-build.
• 1,881 tests passed; package-consumer tests and DocFX validation with warnings treated as errors also passed.
• Azure/GitHub workflow YAML validation and GitHub Actions linting passed.
• Restore with the official feed and MicroBuild configuration succeeded.

The official 1ESPT pipeline, production signing, and end-to-end artifact delivery were not run as part of this change.

---

If this cleanup is not a direction the maintainers want, or an unsolicited infrastructure change is not welcome, please let me know. I’m happy to close the PR or narrow its scope.

[Copilot]

🔵 Needs a closer look

The broad infrastructure changes require maintainer validation of official signing, SBOM generation, and end-to-end artifact delivery.

No open issues 🎉

What changed in this PR

Simplifies CsWin32’s contributor workflow around standard .NET commands while separating local development from official build infrastructure.

Changes:

• Migrates to SLNX and adjusts build ordering and packaging.
• Replaces bootstrap scripts with native CI setup and separates package feeds.
• Removes template automation, obsolete pipelines, and unused tooling.

File	Description
tools/​variables/​ProfilingInputsDropName.ps1	Removes profiling-drop variable helper.
tools/​variables/​BusinessGroupName.ps1	Removes archival metadata helper.
tools/​Set-EnvVars.ps1	Removes bootstrap environment helper.
tools/​MergeFrom-Template.ps1	Removes template merging script.
tools/​Install-NuGetPackage.ps1	Removes package-install helper.
tools/​Install-NuGetCredProvider.ps1	Removes custom credential-provider installer.
tools/​Install-DotNetSdk.ps1	Removes custom SDK installer.
tools/​Get-ProcDump.ps1	Adds explicit feed configuration and failure handling.
tools/​Get-LibTemplateBasis.ps1	Removes template ancestry lookup.
tools/​Convert-PDB.ps1	Uses official package-feed configuration.
tools/​Check-DotNetSdk.ps1	Removes SDK detection helper.
tools/​Check-DotNetRuntime.ps1	Removes runtime detection helper.
tools/​artifacts/​VSInsertion.ps1	Removes OptProf artifact collection.
test/​Restore.Tests.ps1	Removes bootstrap retry tests.
test/​Microsoft.Windows.CsWin32.Tests/​MyReferenceAssemblies.cs	Selects feeds by build environment.
test/​Directory.Build.targets	Adds generation-tool build dependencies.
test/​Directory.Build.props	Makes MicroBuild dependency conditional.
SUPPORT.md	Removes standalone support guidance.
src/​VSInsertionMetadata/​VSInsertionMetadata.targets	Removes profiling metadata targets.
src/​VSInsertionMetadata/​ProfilingInputs.props	Removes profiling input placeholder.
src/​VSInsertionMetadata/​Library.VSInsertionMetadata.proj	Removes template metadata project.
src/​OptProf.targets	Removes profiling configuration.
src/​Microsoft.Windows.CsWin32/​Microsoft.Windows.CsWin32.targets	Prevents reference rebuilds during no-build packing.
README.md	Adds standard build instructions.
nuget.config	Separates local sources using package mapping.
Microsoft.Windows.CsWin32.slnx	Adds XML solution definition.
Microsoft.Windows.CsWin32.sln	Removes replaced solution format.
init.ps1	Removes PowerShell bootstrap.
init.cmd	Removes command-shell bootstrap.
Directory.Solution.targets	Builds solution before packing when required.
Directory.Packages.props	Gates MicroBuild package inclusion.
Directory.Build.props	Separates local and MicroBuild configuration.
COPYRIGHT	Removes standalone copyright notice.
CONTRIBUTING.md	Documents revised development and official workflows.
CodeQL.yml	Removes legacy classification configuration.
azure-pipelines/​vs-validation.yml	Removes optional insertion-validation pipeline.
azure-pipelines/​unofficial.yml	Removes obsolete exclusions and OptProf comments.
azure-pipelines/​PostPRMessage.ps1	Removes validation comment helper.
azure-pipelines/​OptProf.yml	Removes profiling pipeline.
azure-pipelines/​OptProf_part2.yml	Removes profiling continuation pipeline.
azure-pipelines/​official.yml	Removes commented OptProf options.
azure-pipelines/​NuGetSbom.props	Houses official-build output settings.
azure-pipelines/​nuget.config	Adds dedicated official feed configuration.
azure-pipelines/​microbuild.before.yml	Removes OptProf-specific setup.
azure-pipelines/​microbuild.after.yml	Removes profiling artifact publishing.
azure-pipelines/​libtemplate-update.yml	Removes Azure template-update automation.
azure-pipelines/​integration-test.yml	Installs SDKs through native task.
azure-pipelines/​install-dependencies.yml	Replaces bootstrap with native setup and restores.
azure-pipelines/​Get-InsertionPRId.ps1	Removes validation insertion lookup.
azure-pipelines/​dotnet.yml	Removes profiling-only execution branch.
azure-pipelines/​build.yml	Simplifies jobs and updates dependency setup.
azure-pipelines/​archive-sourcecode.yml	Removes source archival pipeline.
azure-pipelines/​Archive-SourceCode.ps1	Removes archival request helper.
azure-pipelines.yml	Removes obsolete editor-path exclusion.
.vscode/​tasks.json	Removes workspace build task.
.vscode/​settings.json	Removes workspace editor settings.
.vscode/​launch.json	Removes debugger attachment configuration.
.vscode/​extensions.json	Removes extension recommendations.
.prettierrc.yaml	Removes unused formatter configuration.
.github/​workflows/​libtemplate-update.yml	Removes GitHub template-update automation.
.github/​workflows/​docs.yml	Uses native SDK setup and tool restore.
.github/​workflows/​docs_validate.yml	Updates runner and documentation setup.
.github/​workflows/​copilot-setup-steps.yml	Uses native SDK setup and package restore.
.github/​workflows/​build.yml	Separates build, pack, and test setup.
.github/​actions/​publish-artifacts/​action.yaml	Removes unused publishing action.
.editorconfig	Defines SLNX indentation.
.config/​dotnet-tools.json	Removes unused CLI tools.

_{Review effort: Balanced}