# Release Notes — Sentinel V5.2

## Added

- Alarm tab
- User tab
- Alarm escalation UX foundation
- Four-role access model
- Full English/French labels for both new tabs

## Preserved

- Dynamic Brain translations
- Fleet FR/EN
- Brain calculations
- Prediction Engine
- Root Cause
- Sentinel DNA
- Brain Memory

## Next backend work

1. Alarm data model and persistence
2. Alarm acknowledgement
3. Configurable escalation policy
4. Notification providers (email / SMS)
5. Authentication
6. Role-based access control
