- Add BU drift checker that classifies archived findings as BU reassignment,
severity drift, closure, or decommission via unfiltered Ivanti API queries
- Add post-sync anomaly summary with significance threshold and classification
breakdown stored in ivanti_sync_anomaly_log table
- Add per-finding BU tracking that detects BU changes across syncs and records
them in ivanti_finding_bu_history table
- Add drift guard that skips trend history writes when total drops more than 50%
- Add CLOSED_GONE archive state for findings that vanish from the closed set
- Add anomaly banner UI on Vulnerability Triage page for significant sync changes
- Add API endpoints for anomaly latest/history and BU change tracking
- Add diagnostic scripts for drift checking and BU reassignment verification
- Add investigation document and xlsx export for the April 2026 BU reassignment
incident where 109 findings were moved to SDIT-CSD-ITLS-PIES
- Migrations required: add_closed_gone_state.js, add_sync_anomaly_tables.js
