As a heads up, we're planning some changes to the default structure to split out each runnable app into its own module that then depends on a shared library.
For the Android part specifically, AGP 9 already requires this, so there's a bunch of explanations and content around it already
https://blog.jetbrains.com/kotlin/2026/01/update-your-projects-for-agp9/
We'll be updating the structure everywhere (including the wizard) once IntelliJ IDEA has AGP 9 support ready, hopefully sometime in Q1.