Implement enhanced translation function in i18n utility to support fallback to English and improve localization handling. Update getCurrentLocale function to default to 'en' for now.

src/utils/i18n.ts

@@ -58,11 +58,33 @@ export async function useTranslations(lang: Locale) {
 
 // Simple translation function for components that don't need async
 export function t(key: string): string {
-  // This is a fallback - in practice, components should use useTranslations
-  return key;
+  // Get current locale (default to 'en' for now)
+  const currentLocale = getCurrentLocale();
+  const translationData = translations[currentLocale] || translations.en || {};
+  
+  const keys = key.split('.');
+  let value: any = translationData;
+  
+  for (const k of keys) {
+    value = value?.[k];
+    if (value === undefined) break;
+  }
+  
+  // Fallback to English if translation missing
+  if (value === undefined && currentLocale !== 'en') {
+    let fallback: any = translations.en;
+    for (const k of keys) {
+      fallback = fallback?.[k];
+      if (fallback === undefined) break;
+    }
+    value = fallback;
+  }
+  
+  return value || key;
 }
 
 export function getCurrentLocale(): Locale {
+  // For now, default to 'en' - this should be enhanced to detect from URL
   return 'en';
 }