This namespace family covers generated-object runtime support, source-info and reload registries, inline markup helpers, and the in-app editor surface.
XamlToCSharpGenerator.RuntimeXamlToCSharpGenerator.Runtime.CoreXamlToCSharpGenerator.Runtime.AvaloniaXamlToCSharpGenerator.Editor.AvaloniaRuntime and Runtime.Core own the framework-neutral registry and source-info contracts used for hot reload, source mapping, generated type lookup, and runtime fallback.
Runtime.Avalonia adds Avalonia-specific loader behavior, resource resolution, inline-code runtime helpers, and mobile/desktop hot reload integration.
Editor.Avalonia belongs here because it is an editor host that sits directly on top of runtime/editor-friendly language-service services for in-app authoring tools.