Previously, I had to download the crossplatform\Aspose.Slides.dll from your site, and then include that in our app. I see now that in Nuget there is
dotnet add package Aspose.Slides.NET6.CrossPlatform --version 25.11.0.…...together with the required native binaries (Windows DLLs, macOS...places the native assets under the runtimes/*/native folders inside...