feat(calendar): show regional holidays and observances

public/locales/ar.json

@@ -367,7 +367,47 @@
     "emptyDay": "لا توجد ذكريات أو محطات مسجلة لهذا اليوم.",
     "openToday": "اكتب ذكرى",
     "writeMemory": "إضافة ذكرى",
-    "openTasks": "فتح المهام"
+    "openTasks": "فتح المهام",
+    "holidayCountry": "البلد أو المنطقة",
+    "autoCountry": "تلقائي ({country})",
+    "publicHoliday": "عطلة رسمية",
+    "festival": "مناسبة",
+    "workingDay": "يوم عمل",
+    "observed": "يوم عطلة بديل",
+    "estimated": "التاريخ تقديري",
+    "workingWeekend": "عمل في عطلة نهاية الأسبوع",
+    "loadingHolidays": "جارٍ تحميل العطلات…",
+    "holidayUnavailable": "بيانات العطلات غير متاحة.",
+    "retryHolidays": "إعادة المحاولة",
+    "holidaySource": "بيانات العطلات الرسمية",
+    "outsideRange": "تتوفر بيانات العطلات من 2024 إلى 2030.",
+    "festivals": {
+      "valentine": "عيد الحب",
+      "earth": "يوم الأرض",
+      "halloween": "الهالوين",
+      "christmasEve": "ليلة عيد الميلاد",
+      "teachers": "يوم المعلم"
+    },
+    "holidayNames": {
+      "New Year's Day": "رأس السنة الميلادية",
+      "Chinese New Year (Spring Festival)": "رأس السنة الصينية",
+      "Chinese New Year": "رأس السنة الصينية",
+      "Chinese New Year's Eve": "ليلة رأس السنة الصينية",
+      "Tomb-Sweeping Day": "عيد تشينغمينغ",
+      "Labor Day": "عيد العمال",
+      "Dragon Boat Festival": "مهرجان قوارب التنين",
+      "Mid-Autumn Festival": "عيد منتصف الخريف",
+      "National Day": "اليوم الوطني",
+      "Christmas Day": "عيد الميلاد",
+      "Christmas Eve": "ليلة عيد الميلاد",
+      "Good Friday": "الجمعة العظيمة",
+      "Easter Monday": "اثنين الفصح",
+      "Peace Memorial Day": "يوم إحياء ذكرى السلام",
+      "Children's Day": "يوم الطفل",
+      "Constitution Day": "يوم الدستور",
+      "Confucius' Birthday": "عيد ميلاد كونفوشيوس"
+    },
+    "holidayCaveat": "قد تتغير المواعيد؛ راجع الإعلانات الرسمية المحلية."
   },
   "tasks": {
     "eyebrow": "الأهداف والمهام",

public/locales/en.json

@@ -367,7 +367,47 @@
     "emptyDay": "No memories or milestones recorded for this day.",
     "openToday": "Write a memory",
     "writeMemory": "Add memory",
-    "openTasks": "Open tasks"
+    "openTasks": "Open tasks",
+    "holidayCountry": "Country / region",
+    "autoCountry": "Auto ({country})",
+    "publicHoliday": "Public holiday",
+    "festival": "Festival",
+    "workingDay": "Working day",
+    "observed": "Substitute day off",
+    "estimated": "Date is estimated",
+    "workingWeekend": "Official working weekend",
+    "loadingHolidays": "Loading holidays…",
+    "holidayUnavailable": "Holiday data unavailable.",
+    "retryHolidays": "Retry",
+    "holidaySource": "Public holiday data",
+    "outsideRange": "Holiday data covers 2024–2030.",
+    "festivals": {
+      "valentine": "Valentine’s Day",
+      "earth": "Earth Day",
+      "halloween": "Halloween",
+      "christmasEve": "Christmas Eve",
+      "teachers": "Teachers’ Day"
+    },
+    "holidayNames": {
+      "New Year's Day": "New Year's Day",
+      "Chinese New Year (Spring Festival)": "Chinese New Year (Spring Festival)",
+      "Chinese New Year": "Chinese New Year",
+      "Chinese New Year's Eve": "Chinese New Year's Eve",
+      "Tomb-Sweeping Day": "Tomb-Sweeping Day",
+      "Labor Day": "Labor Day",
+      "Dragon Boat Festival": "Dragon Boat Festival",
+      "Mid-Autumn Festival": "Mid-Autumn Festival",
+      "National Day": "National Day",
+      "Christmas Day": "Christmas Day",
+      "Christmas Eve": "Christmas Eve",
+      "Good Friday": "Good Friday",
+      "Easter Monday": "Easter Monday",
+      "Peace Memorial Day": "Peace Memorial Day",
+      "Children's Day": "Children's Day",
+      "Constitution Day": "Constitution Day",
+      "Confucius' Birthday": "Confucius' Birthday"
+    },
+    "holidayCaveat": "Dates may change; check local official announcements."
   },
   "tasks": {
     "eyebrow": "GOALS & TASKS",

public/locales/es.json

@@ -367,7 +367,47 @@
     "emptyDay": "No hay recuerdos ni hitos ese día.",
     "openToday": "Escribir un recuerdo",
     "writeMemory": "Añadir recuerdo",
-    "openTasks": "Abrir tareas"
+    "openTasks": "Abrir tareas",
+    "holidayCountry": "País o región",
+    "autoCountry": "Auto ({country})",
+    "publicHoliday": "Día festivo",
+    "festival": "Celebración",
+    "workingDay": "Día laborable",
+    "observed": "Descanso compensatorio",
+    "estimated": "Fecha estimada",
+    "workingWeekend": "Fin de semana laborable",
+    "loadingHolidays": "Cargando festivos…",
+    "holidayUnavailable": "Datos de festivos no disponibles.",
+    "retryHolidays": "Reintentar",
+    "holidaySource": "Datos de festivos",
+    "outsideRange": "Datos disponibles de 2024 a 2030.",
+    "festivals": {
+      "valentine": "San Valentín",
+      "earth": "Día de la Tierra",
+      "halloween": "Halloween",
+      "christmasEve": "Nochebuena",
+      "teachers": "Día del Maestro"
+    },
+    "holidayNames": {
+      "New Year's Day": "Año Nuevo",
+      "Chinese New Year (Spring Festival)": "Año Nuevo chino",
+      "Chinese New Year": "Año Nuevo chino",
+      "Chinese New Year's Eve": "Víspera del Año Nuevo chino",
+      "Tomb-Sweeping Day": "Festival Qingming",
+      "Labor Day": "Día del Trabajo",
+      "Dragon Boat Festival": "Festival del Bote del Dragón",
+      "Mid-Autumn Festival": "Festival de Medio Otoño",
+      "National Day": "Fiesta Nacional",
+      "Christmas Day": "Navidad",
+      "Christmas Eve": "Nochebuena",
+      "Good Friday": "Viernes Santo",
+      "Easter Monday": "Lunes de Pascua",
+      "Peace Memorial Day": "Día de Conmemoración de la Paz",
+      "Children's Day": "Día del Niño",
+      "Constitution Day": "Día de la Constitución",
+      "Confucius' Birthday": "Natalicio de Confucio"
+    },
+    "holidayCaveat": "Las fechas pueden cambiar; consulte los anuncios oficiales locales."
   },
   "tasks": {
     "eyebrow": "OBJETIVOS Y TAREAS",