App Check now mandatory for Firebase AI Logic

When you get started with Firebase AI Logic using the Firebase console, Firebase now automatically enforces Firebase App Check for AI Logic, which is a critical service to help protect the Gemini API when it's directly accessed from your app.

Since App Check is enforced by default, you'll now need to configure the App Check debug provider for local development as part of getting started. Later, when you're ready to release your app's AI feature to end users, register your app with a production App Check attestation provider.