fix(deploy): afegir @astrojs/vercel adapter per a server-rendered pages

web/astro.config.mjs

@@ -2,6 +2,7 @@
 import { defineConfig } from 'astro/config';
 import tailwindcss from '@tailwindcss/vite';
 import sitemap from '@astrojs/sitemap';
+import vercel from '@astrojs/vercel';
 
 // Vite plugin inline: añade Content-Type correcto para .pmtiles y .geojson
 // en dev server. Sin esto, Astro/Vite sirve .pmtiles con Content-Type vacío
@@ -29,6 +30,8 @@ function assetMimePlugin() {
 // https://astro.build/config
 export default defineConfig({
   site: 'https://casestancades.vercel.app',
+  output: 'server',
+  adapter: vercel(),
   integrations: [sitemap()],
   vite: {
     plugins: [assetMimePlugin(), tailwindcss()],

web/package.json

@@ -13,6 +13,7 @@
   },
   "dependencies": {
     "@astrojs/sitemap": "^3.7.3",
+    "@astrojs/vercel": "^11.0.3",
     "astro": "^7.0.9",
     "maplibre-gl": "^5.24.0",
     "pmtiles": "^4.4.1"