feat: support check-in time ranges for hotel accommodations

- Add check_in_end column to day_accommodations (Migration 102)
- Server: create/update accommodation accepts check_in_end
- Bidirectional sync: check_in_end synced between accommodation
  and linked reservation metadata (check_in_end_time)
- DayDetailPanel: shows check-in range (e.g. "14:00 – 22:00"),
  new "Until" time picker in hotel form
- ReservationModal: new check-in-until field for hotel bookings
- ReservationsPanel: displays check-in range in metadata cells
- i18n: checkInUntil keys in all 15 languages

Closes #366

client/src/i18n/translations/ar.ts

@@ -1015,6 +1015,7 @@ const ar: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'المنصة',
   'reservations.meta.seat': 'المقعد',
   'reservations.meta.checkIn': 'تسجيل الوصول',
+  'reservations.meta.checkInUntil': 'تسجيل الدخول حتى',
   'reservations.meta.checkOut': 'تسجيل المغادرة',
   'reservations.meta.linkAccommodation': 'الإقامة',
   'reservations.meta.pickAccommodation': 'ربط بالإقامة',
@@ -1499,6 +1500,7 @@ const ar: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'أضف أماكن إلى رحلتك أولًا',
   'day.allDays': 'الكل',
   'day.checkIn': 'تسجيل الوصول',
+  'day.checkInUntil': 'حتى',
   'day.checkOut': 'تسجيل المغادرة',
   'day.confirmation': 'التأكيد',
   'day.editAccommodation': 'تعديل الإقامة',

client/src/i18n/translations/br.ts

@@ -984,6 +984,7 @@ const br: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Plataforma',
   'reservations.meta.seat': 'Assento',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in até',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Hospedagem',
   'reservations.meta.pickAccommodation': 'Vincular à hospedagem',
@@ -1468,6 +1469,7 @@ const br: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Adicione lugares à viagem primeiro',
   'day.allDays': 'Todos',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Até',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Confirmação',
   'day.editAccommodation': 'Editar hospedagem',

client/src/i18n/translations/cs.ts

@@ -1013,6 +1013,7 @@ const cs: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Nástupiště',
   'reservations.meta.seat': 'Sedadlo',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in do',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Ubytování',
   'reservations.meta.pickAccommodation': 'Propojit s ubytováním',
@@ -1497,6 +1498,7 @@ const cs: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Nejprve přidejte místa ke své cestě',
   'day.allDays': 'Vše',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Do',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Potvrzení',
   'day.editAccommodation': 'Upravit ubytování',

client/src/i18n/translations/de.ts

@@ -1015,6 +1015,7 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Gleis',
   'reservations.meta.seat': 'Sitzplatz',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in bis',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Unterkunft',
   'reservations.meta.pickAccommodation': 'Mit Unterkunft verknüpfen',
@@ -1499,6 +1500,7 @@ const de: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Füge zuerst Orte zu deiner Reise hinzu',
   'day.allDays': 'Alle',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Bis',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Bestätigung',
   'day.editAccommodation': 'Unterkunft bearbeiten',

client/src/i18n/translations/en.ts

@@ -1068,6 +1068,7 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Platform',
   'reservations.meta.seat': 'Seat',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in until',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Accommodation',
   'reservations.meta.pickAccommodation': 'Link to accommodation',
@@ -1552,6 +1553,7 @@ const en: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Add places to your trip first',
   'day.allDays': 'All',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Until',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Confirmation',
   'day.editAccommodation': 'Edit accommodation',

client/src/i18n/translations/es.ts

@@ -1448,6 +1448,7 @@ const es: Record<string, string> = {
   'day.noPlacesForHotel': 'Añade primero lugares al viaje',
   'day.allDays': 'Todos',
   'day.checkIn': 'Registro de entrada',
+  'day.checkInUntil': 'Hasta',
   'day.checkOut': 'Registro de salida',
   'day.confirmation': 'Confirmación',
   'day.editAccommodation': 'Editar alojamiento',
@@ -1615,6 +1616,7 @@ const es: Record<string, string> = {
   'reservations.meta.platform': 'Andén',
   'reservations.meta.seat': 'Asiento',
   'reservations.meta.checkIn': 'Registro de entrada',
+  'reservations.meta.checkInUntil': 'Check-in hasta',
   'reservations.meta.checkOut': 'Registro de salida',
   'reservations.meta.linkAccommodation': 'Alojamiento',
   'reservations.meta.pickAccommodation': 'Vincular con alojamiento',

client/src/i18n/translations/fr.ts

@@ -1011,6 +1011,7 @@ const fr: Record<string, string> = {
   'reservations.meta.platform': 'Quai',
   'reservations.meta.seat': 'Place',
   'reservations.meta.checkIn': 'Arrivée',
+  'reservations.meta.checkInUntil': "Check-in jusqu'à",
   'reservations.meta.checkOut': 'Départ',
   'reservations.meta.linkAccommodation': 'Hébergement',
   'reservations.meta.pickAccommodation': 'Lier à un hébergement',
@@ -1495,6 +1496,7 @@ const fr: Record<string, string> = {
   'day.noPlacesForHotel': 'Ajoutez d\'abord des lieux à votre voyage',
   'day.allDays': 'Tous',
   'day.checkIn': 'Arrivée',
+  'day.checkInUntil': "Jusqu'à",
   'day.checkOut': 'Départ',
   'day.confirmation': 'Confirmation',
   'day.editAccommodation': 'Modifier l\'hébergement',

client/src/i18n/translations/hu.ts

@@ -1013,6 +1013,7 @@ const hu: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Vágány',
   'reservations.meta.seat': 'Ülés',
   'reservations.meta.checkIn': 'Bejelentkezés',
+  'reservations.meta.checkInUntil': 'Bejelentkezés eddig',
   'reservations.meta.checkOut': 'Kijelentkezés',
   'reservations.meta.linkAccommodation': 'Szállás',
   'reservations.meta.pickAccommodation': 'Szállás hozzárendelése',
@@ -1496,6 +1497,7 @@ const hu: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Először adj hozzá helyeket az utazásodhoz',
   'day.allDays': 'Összes',
   'day.checkIn': 'Bejelentkezés',
+  'day.checkInUntil': 'Eddig',
   'day.checkOut': 'Kijelentkezés',
   'day.confirmation': 'Visszaigazolás',
   'day.editAccommodation': 'Szállás szerkesztése',

client/src/i18n/translations/id.ts

@@ -1068,6 +1068,7 @@ const id: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Peron',
   'reservations.meta.seat': 'Kursi',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in sampai',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Akomodasi',
   'reservations.meta.pickAccommodation': 'Hubungkan ke akomodasi',
@@ -1552,6 +1553,7 @@ const id: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Tambahkan tempat ke perjalananmu terlebih dahulu',
   'day.allDays': 'Semua',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Sampai',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Konfirmasi',
   'day.editAccommodation': 'Edit akomodasi',

client/src/i18n/translations/it.ts

@@ -1012,6 +1012,7 @@ const it: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Binario',
   'reservations.meta.seat': 'Posto',
   'reservations.meta.checkIn': 'Check-in',
+  'reservations.meta.checkInUntil': 'Check-in fino a',
   'reservations.meta.checkOut': 'Check-out',
   'reservations.meta.linkAccommodation': 'Alloggio',
   'reservations.meta.pickAccommodation': 'Collega a un alloggio',
@@ -1496,6 +1497,7 @@ const it: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Aggiungi prima i luoghi al tuo viaggio',
   'day.allDays': 'Tutti',
   'day.checkIn': 'Check-in',
+  'day.checkInUntil': 'Fino a',
   'day.checkOut': 'Check-out',
   'day.confirmation': 'Conferma',
   'day.editAccommodation': 'Modifica alloggio',

client/src/i18n/translations/nl.ts

@@ -1011,6 +1011,7 @@ const nl: Record<string, string> = {
   'reservations.meta.platform': 'Perron',
   'reservations.meta.seat': 'Stoel',
   'reservations.meta.checkIn': 'Inchecken',
+  'reservations.meta.checkInUntil': 'Check-in tot',
   'reservations.meta.checkOut': 'Uitchecken',
   'reservations.meta.linkAccommodation': 'Accommodatie',
   'reservations.meta.pickAccommodation': 'Koppel aan accommodatie',
@@ -1495,6 +1496,7 @@ const nl: Record<string, string> = {
   'day.noPlacesForHotel': 'Voeg eerst plaatsen toe aan je reis',
   'day.allDays': 'Alle',
   'day.checkIn': 'Inchecken',
+  'day.checkInUntil': 'Tot',
   'day.checkOut': 'Uitchecken',
   'day.confirmation': 'Bevestiging',
   'day.editAccommodation': 'Accommodatie bewerken',

client/src/i18n/translations/pl.ts

@@ -968,6 +968,7 @@ const pl: Record<string, string | { name: string; category: string }[]> = {
   'reservations.meta.platform': 'Peron',
   'reservations.meta.seat': 'Miejsce',
   'reservations.meta.checkIn': 'Zameldowanie',
+  'reservations.meta.checkInUntil': 'Check-in do',
   'reservations.meta.checkOut': 'Wymeldowanie',
   'reservations.meta.linkAccommodation': 'Zakwaterowanie',
   'reservations.meta.pickAccommodation': 'Link do zakwaterowania',
@@ -1450,6 +1451,7 @@ const pl: Record<string, string | { name: string; category: string }[]> = {
   'day.noPlacesForHotel': 'Najpierw dodaj miejsca do swojej podróży',
   'day.allDays': 'Wszystkie',
   'day.checkIn': 'Zameldowanie',
+  'day.checkInUntil': 'Do',
   'day.checkOut': 'Wymeldowanie',
   'day.confirmation': 'Potwierdzenie',
   'day.editAccommodation': 'Edytuj zakwaterowanie',

client/src/i18n/translations/ru.ts

@@ -1011,6 +1011,7 @@ const ru: Record<string, string> = {
   'reservations.meta.platform': 'Платформа',
   'reservations.meta.seat': 'Место',
   'reservations.meta.checkIn': 'Заезд',
+  'reservations.meta.checkInUntil': 'Заселение до',
   'reservations.meta.checkOut': 'Выезд',
   'reservations.meta.linkAccommodation': 'Жильё',
   'reservations.meta.pickAccommodation': 'Привязать к жилью',
@@ -1495,6 +1496,7 @@ const ru: Record<string, string> = {
   'day.noPlacesForHotel': 'Сначала добавьте места в поездку',
   'day.allDays': 'Все',
   'day.checkIn': 'Заезд',
+  'day.checkInUntil': 'До',
   'day.checkOut': 'Выезд',
   'day.confirmation': 'Подтверждение',
   'day.editAccommodation': 'Редактировать жильё',

client/src/i18n/translations/zh.ts

@@ -1011,6 +1011,7 @@ const zh: Record<string, string> = {
   'reservations.meta.platform': '站台',
   'reservations.meta.seat': '座位',
   'reservations.meta.checkIn': '入住',
+  'reservations.meta.checkInUntil': '入住截止',
   'reservations.meta.checkOut': '退房',
   'reservations.meta.linkAccommodation': '住宿',
   'reservations.meta.pickAccommodation': '关联住宿',
@@ -1495,6 +1496,7 @@ const zh: Record<string, string> = {
   'day.noPlacesForHotel': '请先在旅行中添加地点',
   'day.allDays': '全部',
   'day.checkIn': '入住',
+  'day.checkInUntil': '截止',
   'day.checkOut': '退房',
   'day.confirmation': '确认号',
   'day.editAccommodation': '编辑住宿',

client/src/i18n/translations/zhTw.ts

@@ -1067,6 +1067,7 @@ const zhTw: Record<string, string> = {
   'reservations.meta.platform': '站臺',
   'reservations.meta.seat': '座位',
   'reservations.meta.checkIn': '入住',
+  'reservations.meta.checkInUntil': '入住截止',
   'reservations.meta.checkOut': '退房',
   'reservations.meta.linkAccommodation': '住宿',
   'reservations.meta.pickAccommodation': '關聯住宿',
@@ -1551,6 +1552,7 @@ const zhTw: Record<string, string> = {
   'day.noPlacesForHotel': '請先在旅行中新增地點',
   'day.allDays': '全部',
   'day.checkIn': '入住',
+  'day.checkInUntil': '截止',
   'day.checkOut': '退房',
   'day.confirmation': '確認號',
   'day.editAccommodation': '編輯住宿',