# Hi2Chat Enterprise - Build 05.2.3

## Focus
This build keeps the current Build 05.2.2 desktop design and applies only the requested fixes.

## Changes
- Mobile header now shows Hi2Chat logo/name with Main Lobby as subtitle.
- Right-bottom mobile hamburger button now opens the users/rooms panel.
- Added mobile bottom tab bar icons: Lobby, Chats, Rooms, Friends, More.
- Left side navigation icons now use different modern colors per feature.
- Join/left/system messages now stay inside the chat timeline flow instead of being grouped at the top.
- Welcome, announcement, and special offer messages can appear between normal chat messages.
- Added styled system message types: joined, left, welcome, announcement, offer.
- Kept current desktop design/layout unchanged as requested.

## Test
```bash
cd frontend
npm install
npm run dev
```
Open http://localhost:5173

## Build check
Frontend build passes with `npm run build`.