i18n: translate all public page bodies (EN + IT)

Internationalised the ~44 public pages with next-intl (the shell was
already translated). Each page now pulls its copy from a "pages.<slug>"
namespace via getTranslations (server) / useTranslations (client); the
EN + IT catalogs were authored by parallel agents and merged centrally,
with natural Italian (ICU plurals) and it backfilled from en for any
gap. request.ts gained getMessageFallback/onError so a missing key
degrades to the English value, never a raw key.

Behaviour unchanged (only display text moved to t() calls; queries,
actions, fields, ContentCard structure preserved). Verified on the prod
server: with NEXT_LOCALE=it, home/community/staff/news/shop/rankings all
render Italian copy, no raw-key leakage; English unchanged. The nav
language switcher toggles EN/IT live. tsc 0, vitest 49/49, next build 0.

Admin pages intentionally left in English (staff tooling).

src/app/settings/connections/page.tsx

@@ -1,4 +1,5 @@
 import Link from "next/link";
+import { getTranslations } from "next-intl/server";
 import { redirect } from "next/navigation";
 import { ContentCard } from "@/components/public/ui";
 import { auth } from "@/lib/auth";
@@ -27,6 +28,7 @@ const PROVIDERS = [
 ] as const;
 
 export default async function ConnectionsPage() {
+  const t = await getTranslations("pages.connections");
   const session = await auth();
   if (!session?.user?.id) redirect("/login");
 
@@ -53,23 +55,22 @@ export default async function ConnectionsPage() {
   return (
     <main style={{ display: "grid", gap: "1.5rem", maxWidth: 620, margin: "0 auto" }}>
       <p className="muted" style={{ margin: 0 }}>
-        <Link href="/settings">← Settings</Link>
+        <Link href="/settings">{t("backToSettings")}</Link>
       </p>
 
       <ContentCard
         icon="🔗"
-        title="Connected accounts"
-        subtitle="Link a social account so you can sign in with one click"
+        title={t("title")}
+        subtitle={t("subtitle")}
       >
         <p className="muted" style={{ marginTop: 0 }}>
-          We match it to your hotel account by e-mail, so use the address on file:{" "}
+          {t("matchByEmail")}{" "}
           <strong>{session.user.name}</strong>.
         </p>
 
         {lookupFailed ? (
           <p className="muted" style={{ marginBottom: 0 }}>
-            We couldn't read your linked accounts right now. You can still connect below — your
-            status will show once it's available.
+            {t("lookupFailed")}
           </p>
         ) : null}
       </ContentCard>
@@ -84,10 +85,10 @@ export default async function ConnectionsPage() {
               title={p.label}
               subtitle={
                 !p.available
-                  ? "Not available on this hotel."
+                  ? t("statusUnavailable")
                   : isLinked
-                    ? "Connected — sign in with this account."
-                    : "Not connected."
+                    ? t("statusConnected")
+                    : t("statusNotConnected")
               }
             >
               {isLinked ? (
@@ -96,7 +97,7 @@ export default async function ConnectionsPage() {
                   style={{ cursor: "default", pointerEvents: "none" }}
                   aria-disabled="true"
                 >
-                  Connected
+                  {t("connected")}
                 </span>
               ) : p.available ? (
                 // Plain link into NextAuth's built-in sign-in handler. Re-using
@@ -108,7 +109,7 @@ export default async function ConnectionsPage() {
                     callbackUrl,
                   )}`}
                 >
-                  Connect {p.label}
+                  {t("connectProvider", { provider: p.label })}
                 </a>
               ) : (
                 <span
@@ -116,7 +117,7 @@ export default async function ConnectionsPage() {
                   style={{ cursor: "not-allowed", opacity: 0.55, pointerEvents: "none" }}
                   aria-disabled="true"
                 >
-                  Unavailable
+                  {t("unavailable")}
                 </span>
               )}
             </ContentCard>
@@ -125,8 +126,7 @@ export default async function ConnectionsPage() {
       </div>
 
       <p className="muted" style={{ margin: 0 }}>
-        Connecting takes you to the provider to authorise, then back here. If your social account's
-        e-mail doesn't match a hotel account, you'll be returned to the login screen with a note.
+        {t("footerNote")}
       </p>
     </main>
   );