Add Portuguese, Polish, and Swedish language support with flags

src/components/language-switcher.tsx

@@ -12,6 +12,9 @@ const LOCALES: { code: string; label: string; lang: string }[] = [
   { code: "fr", label: "Français", lang: "fr" },
   { code: "es", label: "Español", lang: "es" },
   { code: "it", label: "Italiano", lang: "it" },
+  { code: "pt", label: "Português", lang: "pt" },
+  { code: "pl", label: "Polski", lang: "pl" },
+  { code: "sv", label: "Svenska", lang: "sv" },
 ];
 
 export function LanguageSwitcher() {