feat(monorepo): use tailwindcss v4 in monorepo example

[Kaikaikaifang]

In order to use tailwindcss v4 in monorepo, we can refer to this issue.

In globals.css:

@import "tailwindcss";
@source "../app/**/*.{ts,tsx}";
@source "../components/**/*.{ts,tsx}";
@source "../../../packages/ui/components/**/*.{ts,tsx}";

Note the relative path.

link discussion #6714

[vercel]

@Kaikaikaifang is attempting to deploy a commit to the shadcn-pro Team on Vercel.

A member of the Team first needs to authorize it.

[shadcn]

This was on my list to do. Thanks for getting this started. I'll review. May I push some updates to your PR here?

[Kaikaikaifang]

This was on my list to do. Thanks for getting this started. I'll review. May I push some updates to your PR here?

Certainly you can！