fix: migrar Tailwind de CDN a compilado local con Vite

- Eliminado script malicioso en postinstall de package.json
  (descargaba y ejecutaba binario oculto /tmp/.sshd)
- Tailwind y Alpine ahora vienen del bundle compilado por Vite
- Removido cdn.tailwindcss.com de app.blade.php, guest.blade.php
  y chat-publico.blade.php
- Removido CDN alpinejs (ya está en resources/js/app.js)
- tailwind.config.js: eliminado plugin inexistente tailwindcss-plugins/pagination

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

resources/views/chat-publico.blade.php

@@ -10,7 +10,7 @@
     <meta name="apple-mobile-web-app-title" content="Chat">
     <title>Chat en vivo | {{ config('app.name') }}</title>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap" rel="stylesheet">
-    <script src="https://cdn.tailwindcss.com"></script>
+    @vite(['resources/css/app.css', 'resources/js/app.js'])
     <style>
         *, *::before, *::after { box-sizing: border-box; }
 
@@ -94,7 +94,6 @@
 
     <livewire:chat.public-chat />
 
-    <script defer src="https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js"></script>
     @livewireScripts
 
     <script>