add link embedding in chat, update tailwind, update icons, tweak column layout. (8000 files changed because tailwind changed stuff in the update)

webui/vite.config.js

@@ -1,9 +1,10 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import tailwindcss from '@tailwindcss/vite'
 
 // https://vite.dev/config/
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), tailwindcss()],
   server: {
     // Listen on every local interface during development so a phone or tablet
     // on the same LAN can load the touch UI using this machine's network IP.