Issues with installation

### Description of the bug:

The instructions seem out of order and are missing some dependencies. It first tells you to run the client before setting up and running the server. That's confusing.

Regardless, I attempted to install and run the js version. I ran `npm install` which was successful. Then, I ran `node --env-file=.env app.js` and successfully started the server. However, when I go to run the client with `npm run start` I get:

```
% npm run start

> chat-app@0.1.0 start
> vite --port 3000

sh: vite: command not found
```

### Actual vs expected behavior:

_No response_

### Any other information you'd like to share?

This is on a Macbook Air M3 Sequoia 15.0.1 running VSCode with Node installed via brew and everything up to date.