Upgrade to Tailwind v4

[david-crespo]

https://tailwindcss.com/docs/v4-beta

npx @tailwindcss/upgrade@next gets pretty close, but we might be blocked on the lack of ability to turn off core fontFamily and fontSize plugins. I bet we can live without that, though.

Core plugins cannot be disabled

In v3 there was a corePlugins option you could use to completely disable certain utilities in the framework. This is no longer supported in v4.0, but we’re planning to explore different ideas for solving the same type of problems that feature was often used to solve in later beta releases.