Set up package publishing for daily, manual, and release builds

[jeffhandley]

Summary of Changes

• Refactored Directory Build Properties: Updated Directory.Build.props and src/Directory.Build.props to include new properties for artifact directories, versioning, and authorship. This results in all build output going into the top-level artifacts folder and NuGet packages produced from the /src/ folder having the desired metadata.
• Updated Release Workflow: Updated .github/workflows/release.yml to handle the publishing of NuGet packages, including daily and manual runs, as well as official releases. This workflow replaces the previous release workflow. The release workflow performs a build on all configs for validation, but it does not run tests. We need to make sure CI is green before minting a release.
• Conditional Publishing in Docs Workflow: Updated the publish-docs job in .github/workflows/docs.yml to only publish from the modelcontextprotocol/csharp-sdk repository.
• De-duplicated the README: The repo README is reused into the NuGet package without its content being duplicated in the tree.

Daily and Manual Runs

• Triggered automatically at 07:00 UTC daily
• Triggered manually using GitHub Actions workflow_dispatch event
• Version prefix applied from /src/Directory.Build.props
• Version suffix set to ci.{github.run_number}
• Manual runs allow the version suffix to be overridden with input
• Package published to GitHub package registry

Official Releases

• Triggered after a GitHub Release is created
• Version prefix applied from /src/Directory.Build.props
• Version suffix applied from /src/Directory.Build.props
• Package published to GitHub package registry
• Package published to NuGet.org
• Version prefix and/or suffix should be updated after each release

[Copilot]

Pull Request Overview

This PR configures package publishing for daily, manual, and release builds by refactoring build properties and updating GitHub Actions workflows.

• Updated release workflow to trigger on a schedule, manual events, and GitHub releases while leveraging the ci.yml workflow
• Adjusted docs workflow to conditionally publish only for the specified repository
• Enabled workflow_call in the ci.yml workflow to support invocation from other workflows

Reviewed Changes

Copilot reviewed 4 out of 8 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/release.yml	Modified to include new triggers, dynamic version suffix handling, and updated job naming
.github/workflows/docs.yml	Added conditional publishing logic based on the repository name
.github/workflows/ci.yml	Enabled workflow_call to allow external invocation of the CI workflow

Files not reviewed (4)

• Directory.Build.props: Language not supported
• src/Directory.Build.props: Language not supported
• src/ModelContextProtocol/ModelContextProtocol.csproj: Language not supported
• tests/ModelContextProtocol.Tests/ModelContextProtocol.Tests.csproj: Language not supported

Comments suppressed due to low confidence (1)

.github/workflows/release.yml:38

• Ensure that the 'format' function used in the expression is supported in GitHub Actions. If not, consider an alternative approach for string formatting.

version_suffix_args: ${{ github.event_name != 'release' && format('--version-suffix "ci.{0}"', github.run_number) || '' }}

[Copilot]

Pull Request Overview

This PR sets up package publishing for daily, manual, and release builds by updating GitHub Actions workflows.

• Updated the release workflow to include scheduled daily triggers, manual runs, and conditional NuGet publishing based on the repository.
• Added a conditional check to the docs workflow to publish documentation only from the specified repository.
• Modified the CI workflow to support workflow calls for better reusability.

Reviewed Changes

Copilot reviewed 4 out of 8 changed files in this pull request and generated no comments.

File	Description
.github/workflows/release.yml	Refined triggers and added conditional environment logic for version suffixing and publishing steps.
.github/workflows/docs.yml	Added a condition to ensure docs are published only from the modelcontextprotocol/csharp-sdk repo.
.github/workflows/ci.yml	Introduced workflow_call trigger for potential CI reusability.

Files not reviewed (4)

• Directory.Build.props: Language not supported
• src/Directory.Build.props: Language not supported
• src/ModelContextProtocol/ModelContextProtocol.csproj: Language not supported
• tests/ModelContextProtocol.Tests/ModelContextProtocol.Tests.csproj: Language not supported

Comments suppressed due to low confidence (2)

.github/workflows/release.yml:38

• [nitpick] Consider refactoring or simplifying the conditional expression for 'version_suffix_args' to improve readability and maintainability.

version_suffix_args: ${{ github.event_name != 'release' && format('--version-suffix "ci.{0}"', github.run_number) || '' }}

.github/workflows/release.yml:30

• [nitpick] The job name 'run-ci' could be more descriptive. Consider renaming it (for example, to 'ci-build') to clearly indicate its purpose.

run-ci: