Add hand-rolled English support (/en/*) alongside the Italian site

PocketBase gains optional, manually-authored English fields on articles
and categories (same record, same slug), and the frontend serves an /en
counterpart of every dynamic route via thin page wrappers around shared
view components — no i18n library, consistent with the project's existing
minimalism stance for a two-locale site with ~20 UI strings.

An article/category with no translation 404s cleanly on its own /en
detail page and is filtered out of /en listings, and the header's
language-switch link falls back to the English blog index rather than a
dead link; resolving that requires a global route middleware, since the
layout's header renders before the page content in document order and so
can't react to state a page component sets during its own async setup.

frontend/nuxt.config.ts

@@ -7,6 +7,11 @@ export default defineNuxtConfig({
 
   css: ['~/assets/css/main.css'],
 
+  // Default auto-import prefixes nested component dirs with their path
+  // (e.g. `components/views/HomeView.vue` -> `<ViewsHomeView>`) — disabled so
+  // the it/en thin page wrappers can reference `<HomeView>` etc. directly.
+  components: [{ path: '~/components', pathPrefix: false }],
+
   app: {
     head: {
       htmlAttrs: { lang: 'it' },