AI Studio Starter Tier — Firebase Rules Deployment Blocked (403)

Google AI Studio Starter Tier — Cannot Deploy Updated Firestore Security Rules

My existing CHECK & BALANCE application uses an AI Studio-managed Starter Tier project.

Project ID: eighth-heaven-4lvvl

The AI Studio agent successfully updated my local firestore.rules to remove an insecure email-based administrator exception. However, the deployed rules still contain the old exception.

Firebase CLI authentication succeeds, but project access fails with PERMISSION_DENIED (HTTP 403). firebase projects:list returns no projects.

I need to deploy the corrected rules to my existing named Firestore database without upgrading to paid billing, recreating the project, deleting data, or changing my published application’s address.

What is the supported method to publish updated security rules for an AI Studio-managed Starter Tier project?