added product page

src/components/Header.astro

@@ -8,6 +8,7 @@ const ui = t(lang);
 const home = localePath(lang, '/');
 const items = [
   { href: `${home}#capabilities`, label: ui.nav.capabilities },
+  { href: localePath(lang, '/cipherverifier'), label: ui.nav.product },
   { href: `${home}#sectors`, label: ui.nav.sectors },
   { href: localePath(lang, '/insights'), label: ui.nav.insights },
   { href: localePath(lang, '/team'), label: ui.nav.team },