fix: responsive Signaturmeny title + translated menu item descriptions

- Make 'Signaturmeny' h2 responsive (smaller base font + break-words) so it doesn't overflow on mobile.
- Add signatureMenuItems and menuDescriptions to translations (en/sv + fallbacks for hi/ur).
- Update homepage signature cards and full menu page to use translated descriptions (while keeping dish names unchanged as requested).
- Swedish descriptions now active by default.

app/menu/page.tsx

@@ -286,7 +286,7 @@ export default function MenuPage() {
 
                           {item.description && (
                             <p className="text-[#6B665F] text-[15px] leading-relaxed mb-5">
-                              {item.description}
+                              {(t as any).menuDescriptions?.[item.id] || item.description}
                             </p>
                           )}