add umami tracking

nuxt.config.ts

@@ -2,5 +2,16 @@
 export default defineNuxtConfig({
   compatibilityDate: '2025-07-15',
   devtools: { enabled: true },
-  modules: ['@nuxt/eslint', '@nuxtjs/tailwindcss']
+  modules: ['@nuxt/eslint', '@nuxtjs/tailwindcss'],
+  app: {
+    head: {
+      script: [
+        {
+          src: 'https://umami.erudi.fr/script.js',
+          defer: true,
+          'data-website-id': 'b685157f-81fc-4b68-8bf1-81efde4b9e9f'
+        }
+      ]
+    }
+  }
 })