From install to first window — 10 minutes

// A module is described declaratively — the shell builds the UI itself
public class DocumentsModule : DockModule
{
    public override void Initialize(IModuleContext ctx)
    {
        ctx.AddPanel<DocumentListPanel>("Documents", DockArea.Left);
        ctx.AddPanel<DocumentPreviewPanel>("Preview", DockArea.Center);

        ctx.AddCommand("doc.create", "Create document")
           .WithShortcut("Ctrl+N")
           .WithPermission("documents.write")
           .OnExecute(() => ctx.Services.Get<IDocumentService>().Create());
    }
}