Agent Skills: tailwind-v4

Work effectively with Tailwind CSS v4 (the CSS-first model) in a Nuxt/Vite + PrimeVue/Volt stack. Use when editing Tailwind CSS, configuring @theme/@source/@import, setting up dark mode, defining design tokens, or debugging classes that silently don't apply. Covers the v3→v4 traps an LLM trained on v3 falls into.