Add additional localization strings for itinerary features in Polish, Swedish, and Chinese

- Added "additional_info", "invalid_date_range", "sunrise_sunset", and "timezone" keys to pl.json, sv.json, and zh.json.
- Updated existing strings for consistency across languages.

frontend/src/locales/de.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "Durch das Hinzufügen eines Start- und Enddatums zur Sammlung werden Reiseroutenplanungsfunktionen auf der Sammlungsseite freigegeben.",
     "date_itinerary": "Datumstrecke",
     "no_ordered_items": "Fügen Sie der Sammlung Elemente mit Daten hinzu, um sie hier zu sehen.",
-    "ordered_itinerary": "Reiseroute bestellt"
+    "ordered_itinerary": "Reiseroute bestellt",
+    "additional_info": "Weitere Informationen",
+    "invalid_date_range": "Ungültiger Datumsbereich",
+    "sunrise_sunset": "Sonnenaufgang",
+    "timezone": "Zeitzone"
   },
   "home": {
     "desc_1": "Entdecken, planen und erkunden Sie mühelos",

frontend/src/locales/en.json

@@ -63,6 +63,7 @@
 		"collection_remove_error": "Error removing adventure from collection",
 		"collection_link_success": "Adventure linked to collection successfully!",
 		"invalid_date_range": "Invalid date range",
+		"timezone": "Timezone",
 		"no_image_found": "No image found",
 		"collection_link_error": "Error linking adventure to collection",
 		"adventure_delete_confirm": "Are you sure you want to delete this adventure? This action cannot be undone.",

frontend/src/locales/es.json

@@ -300,7 +300,11 @@
     "collection_no_start_end_date": "Agregar una fecha de inicio y finalización a la colección desbloqueará las funciones de planificación del itinerario en la página de colección.",
     "date_itinerary": "Itinerario de fecha",
     "no_ordered_items": "Agregue elementos con fechas a la colección para verlos aquí.",
-    "ordered_itinerary": "Itinerario ordenado"
+    "ordered_itinerary": "Itinerario ordenado",
+    "additional_info": "información adicional",
+    "invalid_date_range": "Rango de fechas no válido",
+    "sunrise_sunset": "Amanecer",
+    "timezone": "Zona horaria"
   },
   "worldtravel": {
     "all": "Todo",

frontend/src/locales/fr.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "L'ajout d'une date de début et de fin à la collection débloquera les fonctionnalités de planification de l'itinéraire dans la page de collection.",
     "date_itinerary": "Itinéraire trié par date",
     "no_ordered_items": "Ajoutez des éléments avec des dates de visite à la collection pour les voir ici.",
-    "ordered_itinerary": "Itinéraire trié par activité"
+    "ordered_itinerary": "Itinéraire trié par activité",
+    "additional_info": "Informations Complémentaires",
+    "invalid_date_range": "Plage de dates non valide",
+    "sunrise_sunset": "Lever du soleil",
+    "timezone": "Fuseau horaire"
   },
   "home": {
     "desc_1": "Découvrez, planifiez et explorez en toute simplicité",

frontend/src/locales/it.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "L'aggiunta di una data di inizio e fine alla collezione sbloccherà le funzionalità di pianificazione dell'itinerario nella pagina della collezione.",
     "date_itinerary": "Data dell'itinerario",
     "no_ordered_items": "Aggiungi elementi con date alla collezione per vederli qui.",
-    "ordered_itinerary": "Itinerario ordinato"
+    "ordered_itinerary": "Itinerario ordinato",
+    "additional_info": "Ulteriori informazioni",
+    "invalid_date_range": "Intervallo di date non valido",
+    "sunrise_sunset": "Alba",
+    "timezone": "Fuso orario"
   },
   "home": {
     "desc_1": "Scopri, pianifica ed esplora con facilità",
@@ -632,4 +636,4 @@
     "motel": "Motel",
     "current_timezone": "Fuso orario attuale"
   }
-}
+}

frontend/src/locales/ko.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "컬렉션에 시작 및 종료 날짜를 추가하면 컬렉션 페이지에서 여정 계획 기능이 잠금 해제됩니다.",
     "date_itinerary": "날짜 일정",
     "no_ordered_items": "컬렉션에 날짜가있는 항목을 추가하여 여기에서 확인하십시오.",
-    "ordered_itinerary": "주문한 여정"
+    "ordered_itinerary": "주문한 여정",
+    "additional_info": "추가 정보",
+    "invalid_date_range": "잘못된 날짜 범위",
+    "sunrise_sunset": "해돋이",
+    "timezone": "시간대"
   },
   "auth": {
     "both_passwords_required": "두 암호 모두 필요합니다",

frontend/src/locales/nl.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "Als u een start- en einddatum aan de collectie toevoegt, ontgrendelt u de functies van de planning van de route ontgrendelen in de verzamelpagina.",
     "date_itinerary": "Datumroute",
     "no_ordered_items": "Voeg items toe met datums aan de collectie om ze hier te zien.",
-    "ordered_itinerary": "Besteld reisschema"
+    "ordered_itinerary": "Besteld reisschema",
+    "additional_info": "Aanvullende informatie",
+    "invalid_date_range": "Ongeldige datumbereik",
+    "sunrise_sunset": "Zonsopgang",
+    "timezone": "Tijdzone"
   },
   "home": {
     "desc_1": "Ontdek, plan en verken met gemak",

frontend/src/locales/pl.json

@@ -300,7 +300,11 @@
     "collection_no_start_end_date": "Dodanie daty rozpoczęcia i końca do kolekcji odblokuje funkcje planowania planu podróży na stronie kolekcji.",
     "date_itinerary": "Trasa daty",
     "no_ordered_items": "Dodaj przedmioty z datami do kolekcji, aby je zobaczyć tutaj.",
-    "ordered_itinerary": "Zamówiono trasę"
+    "ordered_itinerary": "Zamówiono trasę",
+    "additional_info": "Dodatkowe informacje",
+    "invalid_date_range": "Niepoprawny zakres dat",
+    "sunrise_sunset": "Wschód słońca",
+    "timezone": "Strefa czasowa"
   },
   "worldtravel": {
     "country_list": "Lista krajów",

frontend/src/locales/sv.json

@@ -252,7 +252,11 @@
     "collection_no_start_end_date": "Att lägga till ett start- och slutdatum till samlingen kommer att låsa upp planeringsfunktioner för resplan på insamlingssidan.",
     "date_itinerary": "Datum resplan",
     "no_ordered_items": "Lägg till objekt med datum i samlingen för att se dem här.",
-    "ordered_itinerary": "Beställd resplan"
+    "ordered_itinerary": "Beställd resplan",
+    "additional_info": "Ytterligare information",
+    "invalid_date_range": "Ogiltigt datumintervall",
+    "sunrise_sunset": "Soluppgång",
+    "timezone": "Tidszon"
   },
   "home": {
     "desc_1": "Upptäck, planera och utforska med lätthet",

frontend/src/locales/zh.json

@@ -300,7 +300,11 @@
     "collection_no_start_end_date": "在集合页面中添加开始日期和结束日期将在“收集”页面中解锁行程计划功能。",
     "date_itinerary": "日期行程",
     "no_ordered_items": "将带有日期的项目添加到集合中，以便在此处查看它们。",
-    "ordered_itinerary": "订购了行程"
+    "ordered_itinerary": "订购了行程",
+    "additional_info": "附加信息",
+    "invalid_date_range": "无效的日期范围",
+    "sunrise_sunset": "日出",
+    "timezone": "时区"
   },
   "auth": {
     "forgot_password": "忘记密码？",