Improve DX when running bun run www:dev for first time

[AlbertSabate]

https://discord.com/channels/1217158445791445193/1293293415332577423

[aralroca]

all internals in general should be better documented

[chankruze]

I expected this to work but it is also not working:

{
  "scripts": {
    "postinstall": "bun run build"
  }
}

This is not linking the cli.js in node_modules