Add a copilot icon to the .NET nuget package

[stephentoub]

The icon shows up in nuget when browsing/searching packages.

Before:

After:

I've used https://github.com/microsoft/vscode-copilot-chat/blob/main/assets/copilot.png. If there's a better one, we can switch to that instead.

[Copilot]

Pull request overview

Adds a NuGet package icon for the .NET GitHub.Copilot.SDK package so the Copilot icon appears in NuGet browse/search results.

Changes:

• Set PackageIcon in GitHub.Copilot.SDK.csproj.
• Pack assets/copilot.png into the NuGet package root so NuGet can display it.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File	Description
dotnet/src/GitHub.Copilot.SDK.csproj	Configures NuGet packing to include and reference the new package icon.
assets/copilot.png	Adds the icon image that will be embedded into the NuGet package.

[github-actions]

Cross-SDK Consistency Review ✅

This PR adds a package icon to the .NET NuGet package, which improves discoverability when browsing/searching packages on nuget.org.

Consistency Analysis

I've reviewed whether similar package icon metadata should be added to the other SDK implementations:

✅ .NET (this PR)

• Status: Icon added via (PackageIcon)copilot.png(/PackageIcon) in the .csproj
• Ecosystem support: NuGet fully supports package icons and displays them prominently in search results and package pages

🟡 Node.js/TypeScript

• Status: No icon metadata in package.json
• Ecosystem support: npm does NOT support package icons in package metadata. npm displays icons from the GitHub repository (via social preview images) on the package page, but there's no icon field in package.json
• Recommendation: No action needed - npm doesn't support this feature

🟡 Python

• Status: No icon metadata in pyproject.toml
• Ecosystem support: PyPI does NOT support package icons in the traditional sense. Package icons/logos are displayed via the project's GitHub repository social preview or by embedding images in the README/long_description
• Recommendation: No action needed - PyPI doesn't support package icon metadata

🟡 Go

• Status: No icon metadata in go.mod
• Ecosystem support: Go modules (pkg.go.dev) do NOT support package icon metadata. The Go package registry displays repository information but doesn't have a concept of package icons
• Recommendation: No action needed - Go modules don't support this feature

Conclusion

This PR maintains appropriate cross-SDK consistency. The .NET SDK is correctly adopting a NuGet-specific feature that has no equivalent in the npm, PyPI, or Go module ecosystems. The shared assets/copilot.png icon can potentially be reused by documentation or other contexts across all SDKs.

No further changes needed ✨

Generated by SDK Consistency Review Agent for issue #688 · ◷