Added: A dedicated MainWP REST controller for the Google Analytics authentication challenge endpoint.

Added: Separate cron handlers and bootstrap files for scheduled analytics data refreshes and hourly token refreshes.

Added: Token state tracking with needs_reauth, last_updated, and improved refresh metadata persistence.

Updated: Cron scheduling is now managed through a dedicated scheduler class with clearer job registration and reporting.

Updated: Sign-in, token refresh, and account refresh flows with stronger response validation and more detailed masked debug logging.