I guess it boils down to what you mean by 'within Tersus'.
If you mean visually embedding your Xcode app ui in a Tersus app (T) ui, then I'm pretty sure you can't, at least not without major changes to your Xcode app, and to the Tersus platform.
However, if you wish to be able to launch your Xcode app from a Tersus app, then you could implement a custom url scheme in your Xcode app, and use a matching url to launch it from your Tersus app (e.g. using Display Actions/Go to URL).
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