Send 10-Min Interview Reminders from Google Calendar to Slack DMs

This workflow automates timely interview reminders by checking the 'Interviews' Google Calendar every minute for events starting within the next 10 minutes (configurable LEAD_MINUTES). It processes each event to identify internal attendees (company domain emails), skips declined ones, and extracts key details like candidate name, role, local start time, meeting link, CV, and notes from the event description. For each eligible attendee, it checks a Data Store ledger to prevent duplicate notifica