To save and sync `bellplex_12week_progress.json` directly to your Google Drive from your own domain/localhost, enter your **Google Cloud OAuth 2.0 Client ID**:
Quick 60-Second Setup in Google Cloud Console:
1. Go to console.cloud.google.com → Enable Google Drive API.
2. Go to APIs & Services → Credentials → Create OAuth Client ID (Web Application).
3. Add your site's URL (e.g., http://localhost:8080 or https://yourdomain.com) under Authorized JavaScript origins.
4. Paste the Client ID above and click Save. Your workouts will automatically sync to bellplex_12week_progress.json in your Google Drive root folder.