# Release Notes — Sentinel V5.1 Frontend

## Added

- Sidebar navigation
- Six focused tabs
- Simple client English
- French interface mode
- Client summary and risk view
- Health History chart
- Brain Timeline
- Responsive layout

## Preserved

- Fleet page
- Existing API endpoints
- Brain calculations
- Root Cause
- Prediction Engine
- Sentinel DNA
- Brain Memory
- Measurement chart

## Known limitation

Technical finding explanations still come from the Brain in English.
The interface labels are bilingual; migration of every Brain sentence
to translation codes will be handled in a later backend release.
