* UN-2850 [FIX] Update ETL webhook response status change for scheduled executions - Add INPROGRESS status to NotificationStatus enum for scheduled executions - Add SCHEDULED_EXECUTION source to NotificationSource enum - Fix notification status mapping for backward compatibility: - API workflows use COMPLETED status - ETL/TASK workflows use SUCCESS status - Update Slack webhook formatting to inline display - Standardize key naming in Slack notifications (ID → Id) - Trigger INPROGRESS notification when scheduled pipeline starts 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com> * missed to commit --------- Co-authored-by: Claude <noreply@anthropic.com>