Finalize Google Sign-In Setup

My mobile app is fully built; the last thing holding up release is completing Google Sign-In configuration for both Android and iOS.

Here’s what I’ve already done:
• Created the OAuth 2.0 client IDs in Google Cloud Console.
• Linked those credentials to my Firebase project.

What I still need:
1. Confirm the Android and iOS OAuth client details (SHA-1, bundle IDs, reversed client ID, etc.) match what’s in the code and in Firebase.
2. Enable and verify Google Sign-In in Google Play Console and the Apple configuration within Firebase.
3. Push the updated configuration to production so users can authenticate without “app not configured” errors.
4. Provide a brief handoff doc outlining where settings live in Google Cloud Console, Firebase, and Play Console in case I need to rotate keys later.

No code changes are required—just credential checks, console tweaks, and a clean deployment. I’ll grant you temporary access to the project and expect the live sign-in flow to work on both stores’ production tracks when we’re done.