A junior mobile engineer joins on Monday, and by Wednesday their branch already touches the voice-summary feature. The first pull request they open is technically correct, the tests are green, and nobody on the team can answer one question: if this ships and misbehaves, who turns it off, and how fast? That question is the real onboarding task, and it has nothing to do with the model.

This post is a plan, not a war story. I have not run it on your device, your OS build, or your framework version, so I label every observation as something you should record rather than a number I measured. What follows is the first hour, the first PR, and the first rollback I would hand a new engineer on a mobile AI repo.

The first hour is an inventory, not a tutorial

Before anyone runs the app, write down the environment.…