fix(ui): hero "Ücretsiz dene" butonuna kanonik sağ ok (AGENTS.md)

Kanonik CTA deseni: metin önce, sonunda `<ArrowRight className="size-4" />`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/features/pazarlama/components/hero-focus-button.tsx

@@ -25,6 +25,7 @@ export function HeroFocusButton() {
       className="mt-8 cursor-pointer bg-orange-500 text-white transition-colors duration-200 hover:bg-orange-600"
     >
       Ücretsiz dene
+      <ArrowRight className="size-4" aria-hidden />
     </Button>
   );
 }