Non richiedere Turnstile contatti sul form newsletter.

Il footer non ha il widget Turnstile: evita il fallimento usando solo NEWSLETTER_TURNSTILE_SECRET_KEY.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/pages/api/newsletter/subscribe.ts

@@ -83,9 +83,9 @@ export const POST: APIRoute = async ({ request, locals, url }) => {
   }
   const email = normalizeEmail(emailRaw);
 
-  const turnstileSecret =
+  // Turnstile solo se configurato esplicitamente per la newsletter.
-    readEnv('NEWSLETTER_TURNSTILE_SECRET_KEY', runtimeEnv) ||
+  // Non riusare CONTACT_TURNSTILE_SECRET_KEY: il form footer non ha il widget.
-    readEnv('CONTACT_TURNSTILE_SECRET_KEY', runtimeEnv);
+  const turnstileSecret = readEnv('NEWSLETTER_TURNSTILE_SECRET_KEY', runtimeEnv);
   if (turnstileSecret) {
     const turnstileToken = required(form.get('cf-turnstile-response'));
     const isHuman = await verifyTurnstile(