Validate all system connections and integrations
Test core system components and database connectivity
Test basic API connectivity and server status
Verify Supabase database connectivity and queries
Test Supabase authentication system
Test Google Calendar OAuth flow and token management
Check if Google Calendar is connected for the current user
Test the complete OAuth connection process
Test token refresh and validation
Test email processing and transaction extraction
Test transaction extraction with mock email data
Test real Claude API integration for transaction extraction
Run all tests in sequence to validate the entire system