Copilot upgrade agent guides .NET migration to Windows Arm64

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Copilot upgrade agent guides .NET migration to Windows Arm64

Microsoft describes assessment, migration planning and code/dependency updates for x64 or x86 .NET projects. Review native libraries and build settings. A successful build is insufficient; runtime validation on Windows Arm64 hardware or CI is still required.

https://devblogs.microsoft.com/dotnet/modernize-dotnet-apps-for-windows-arm64/

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