The database, cron-ready message queue, vendor/customer booking tables, OTP storage, and QR generation page are prepared. Only the QR page has a GUI as requested. Messaging and cron services are managed in the database and PHP cron scripts.
Uses `company_id_service_msg` templates and `message_queue` for booking confirmation, next service date, order status, vendor OTP, and admin OTP flows.
Menu 03
Build Cron
Run the cron scripts from server cron to queue reminders and mark queued messages as sent in the database logs.