fix(i18n): render consent banner inside NextIntl provider

Move ConsentBanner rendering into the locale layout so next-intl context is always available (prevents missing provider errors).

fix(activity-feed): use dark styling for disabled state

Avoid white disabled cards so the feed never appears as a white/transparent block after reload.

test(e2e): assert nav text changes on locale switch

Strengthen i18n test to verify translated labels.

Co-authored-by: dennis <dennis@konkol.net>

app/[locale]/layout.tsx

@@ -1,6 +1,7 @@
 import { NextIntlClientProvider } from "next-intl";
 import { getMessages, setRequestLocale } from "next-intl/server";
 import React from "react";
+import ConsentBanner from "../components/ConsentBanner";
 
 export default async function LocaleLayout({
   children,
@@ -17,6 +18,7 @@ export default async function LocaleLayout({
   return (
     <NextIntlClientProvider locale={locale} messages={messages}>
       {children}
+      <ConsentBanner />
     </NextIntlClientProvider>
   );
 }