# Hi2Chat Enterprise Development - Build 04

## Build 04 - Real Chat UI Foundation

This build merges Build 03.4.2 realtime backend fixes with a usable browser chat UI test client.

### Included
- Build 03.4.2 realtime gateway fixes
- Dev socket mode for local testing without JWT
- Lobby join and message send
- Live broadcast rendering in chat window
- Own messages displayed on right side
- Other user messages displayed on left side
- Online users panel
- Typing indicator UI
- Lobby history rendering
- Debug log kept at bottom

### Test
1. npm install
2. npm run start:dev
3. Open tools/socket-test-client.html in two browser windows
4. Window 1 username: UserA
5. Window 2 username: UserB
6. Connect both, join lobby, send messages

Expected result: messages appear live in both windows.