Import and Export Apps with Retool API?

I'm thinking through deployment for self-hosted retool. I'd like to deploy the same apps to a large number of environments automatically.

I'd love it if I could create an initialization script that would import apps from source on startup (for a read-only prod instance). I didn't see import/export functionality in the API documentation. Looking for the equivalent of manually clicking import/export in the UI.

Is it possible to do this as part of my CICD pipeline like I'm envisioning here, or is the only option the source control feature in the enterprise plan?