feat: add Brazilian Portuguese (pt-BR) language support — thanks @fgbona

client/src/components/Vacay/VacayMonthCard.tsx

@@ -7,12 +7,14 @@ const WEEKDAYS_EN = ['Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa', 'Su']
 const WEEKDAYS_DE = ['Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa', 'So']
 const WEEKDAYS_ES = ['Lu', 'Ma', 'Mi', 'Ju', 'Vi', 'Sa', 'Do']
 const WEEKDAYS_FR = ['Lu', 'Ma', 'Me', 'Je', 'Ve', 'Sa', 'Di']
+const WEEKDAYS_BR = ['Seg', 'Ter', 'Qua', 'Qui', 'Sex', 'Sáb', 'Dom']
 const WEEKDAYS_AR = ['اث', 'ثل', 'أر', 'خم', 'جم', 'سب', 'أح']
 
 const MONTHS_EN = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December']
 const MONTHS_DE = ['Januar', 'Februar', 'März', 'April', 'Mai', 'Juni', 'Juli', 'August', 'September', 'Oktober', 'November', 'Dezember']
 const MONTHS_ES = ['Enero', 'Febrero', 'Marzo', 'Abril', 'Mayo', 'Junio', 'Julio', 'Agosto', 'Septiembre', 'Octubre', 'Noviembre', 'Diciembre']
 const MONTHS_FR = ['Janvier', 'Février', 'Mars', 'Avril', 'Mai', 'Juin', 'Juillet', 'Août', 'Septembre', 'Octobre', 'Novembre', 'Décembre']
+const MONTHS_BR = ['Janeiro', 'Fevereiro', 'Março', 'Abril', 'Maio', 'Junho', 'Julho', 'Agosto', 'Setembro', 'Outubro', 'Novembro', 'Dezembro']
 const MONTHS_AR = ['يناير', 'فبراير', 'مارس', 'أبريل', 'مايو', 'يونيو', 'يوليو', 'أغسطس', 'سبتمبر', 'أكتوبر', 'نوفمبر', 'ديسمبر']
 
 function hexToRgba(hex: string, alpha: number): string {
@@ -41,8 +43,8 @@ export default function VacayMonthCard({
 }: VacayMonthCardProps) {
   const { language } = useTranslation()
   
-  const weekdays = language === 'de' ? WEEKDAYS_DE : language === 'es' ? WEEKDAYS_ES : language === 'fr' ? WEEKDAYS_FR : language === 'ar' ? WEEKDAYS_AR : WEEKDAYS_EN
-  const monthNames = language === 'de' ? MONTHS_DE : language === 'es' ? MONTHS_ES : language === 'fr' ? MONTHS_FR : language === 'ar' ? MONTHS_AR : MONTHS_EN
+  const weekdays = language === 'de' ? WEEKDAYS_DE : language === 'es' ? WEEKDAYS_ES : language === 'fr' ? WEEKDAYS_FR : language === 'br' ? WEEKDAYS_BR : language === 'ar' ? WEEKDAYS_AR : WEEKDAYS_EN
+  const monthNames = language === 'de' ? MONTHS_DE : language === 'es' ? MONTHS_ES : language === 'fr' ? MONTHS_FR : language === 'br' ? MONTHS_BR : language === 'ar' ? MONTHS_AR : MONTHS_EN
   
   const weeks = useMemo(() => {
     const firstDay = new Date(year, month, 1)

client/src/i18n/TranslationContext.tsx

@@ -8,6 +8,7 @@ import ru from './translations/ru'
 import zh from './translations/zh'
 import nl from './translations/nl'
 import ar from './translations/ar'
+import br from './translations/br'
 
 type TranslationStrings = Record<string, string | { name: string; category: string }[]>
 
@@ -17,13 +18,14 @@ export const SUPPORTED_LANGUAGES = [
   { value: 'es', label: 'Español' },
   { value: 'fr', label: 'Français' },
   { value: 'nl', label: 'Nederlands' },
+  { value: 'br', label: 'Português (Brasil)' },
   { value: 'ru', label: 'Русский' },
   { value: 'zh', label: '中文' },
   { value: 'ar', label: 'العربية' },
 ] as const
 
-const translations: Record<string, TranslationStrings> = { de, en, es, fr, ru, zh, nl, ar }
-const LOCALES: Record<string, string> = { de: 'de-DE', en: 'en-US', es: 'es-ES', fr: 'fr-FR', ru: 'ru-RU', zh: 'zh-CN', nl: 'nl-NL', ar: 'ar-SA' }
+const translations: Record<string, TranslationStrings> = { de, en, es, fr, ru, zh, nl, ar, br }
+const LOCALES: Record<string, string> = { de: 'de-DE', en: 'en-US', es: 'es-ES', fr: 'fr-FR', ru: 'ru-RU', zh: 'zh-CN', nl: 'nl-NL', ar: 'ar-SA', br: 'pt-BR' }
 const RTL_LANGUAGES = new Set(['ar'])
 
 export function getLocaleForLanguage(language: string): string {
@@ -31,6 +33,7 @@ export function getLocaleForLanguage(language: string): string {
 }
 
 export function getIntlLanguage(language: string): string {
+  if (language === 'br') return 'pt-BR'
   return ['de', 'es', 'fr', 'ru', 'zh', 'nl', 'ar'].includes(language) ? language : 'en'
 }