Migrate to Svelte 5, SvelteKit 3, and Tailwind 4

Co-authored-by: lukeslakemail <lukeslakemail@gmail.com>

sveltekit-app/postcss.config.js

@@ -1,6 +1,5 @@
 export default {
   plugins: {
     tailwindcss: {},
-    autoprefixer: {},
   },
 }