[FR]: Adding error management example with best practices

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the problem

Now in android app is a well structured app and an interesting starting point to study how create an android app with a good architecture.

However, reviewing the code, i've noticed the absence of a good "error handling" example, in particular where the error pass via all the app layers and through the various mapping and anti-corruption layers.

I can work on this topic and try to submit a pull request if for you sound acceptable.

### Describe the solution

Add error management at least in one feature / use case

### Additional context

_No response_

### Code of Conduct

- [X] I agree to follow this project's Code of Conduct

Review the Android app's existing feature and use-case structure, focusing on how errors move through its layers, mappings, and anti-corruption layers. Done means one feature or use case contains a documented error-management example that demonstrates this flow; no specific file or test is named in the issue.

Written by the indexing model from the issue text.