fix french homepage

apps/homepage/src/proxy.ts

@@ -44,6 +44,19 @@ export function proxy(request: NextRequest): NextResponse {
     return applySecurityHeaders(response, csp);
   }
 
+  // Redirect locale-less paths (e.g. /sign-in → /en/sign-in), but not /dashboard, /admin, or files
+  const firstSegment = request.nextUrl.pathname.split('/')[1];
+  const isFile = /\.\w+$/.test(request.nextUrl.pathname);
+  if (firstSegment && !isFile && !isLocale(firstSegment) && firstSegment !== 'dashboard' && firstSegment !== 'admin') {
+    const cookieLocale = request.cookies.get(localeCookie)?.value;
+    const locale = isLocale(cookieLocale)
+      ? cookieLocale
+      : localeFromAcceptLanguage(request.headers.get('accept-language')) || defaultLocale;
+    const destination = request.nextUrl.clone();
+    destination.pathname = `/${locale}${request.nextUrl.pathname}`;
+    return applySecurityHeaders(NextResponse.redirect(destination), csp);
+  }
+
   const response = NextResponse.next({ request: { headers: requestHeaders } });
   const explicitLocale = request.nextUrl.pathname.split('/')[1];
   if (isLocale(explicitLocale)) {