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/components/Planner/DayDetailPanel.tsx

@@ -78,7 +78,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
   const [showHotelPicker, setShowHotelPicker] = useState(false)
   const [hotelDayRange, setHotelDayRange] = useState({ start: day?.id, end: day?.id })
   const [hotelCategoryFilter, setHotelCategoryFilter] = useState('')
-  const [hotelForm, setHotelForm] = useState({ check_in: '', check_out: '', confirmation: '', place_id: null })
+  const [hotelForm, setHotelForm] = useState({ check_in: '', check_in_end: '', check_out: '', confirmation: '', place_id: null })
 
   useEffect(() => {
     if (!day?.date || !lat || !lng) { setWeather(null); return }
@@ -117,6 +117,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
         start_day_id: hotelDayRange.start,
         end_day_id: hotelDayRange.end,
         check_in: hotelForm.check_in || null,
+        check_in_end: hotelForm.check_in_end || null,
         check_out: hotelForm.check_out || null,
         confirmation: hotelForm.confirmation || null,
       })
@@ -128,7 +129,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
         days.some(d => d.id >= a.start_day_id && d.id <= a.end_day_id && d.id === day?.id)
       ))
       setShowHotelPicker(false)
-      setHotelForm({ check_in: '', check_out: '', confirmation: '', place_id: null })
+      setHotelForm({ check_in: '', check_in_end: '', check_out: '', confirmation: '', place_id: null })
       onAccommodationChange?.()
     } catch {}
   }
@@ -356,7 +357,7 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
                           <div style={{ fontSize: 13, fontWeight: 600, color: 'var(--text-primary)', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{acc.place_name}</div>
                           {acc.place_address && <div style={{ fontSize: 10, color: 'var(--text-faint)', overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>{acc.place_address}</div>}
                         </div>
-                        {canEditDays && <button onClick={() => { setAccommodation(acc); setHotelForm({ check_in: acc.check_in || '', check_out: acc.check_out || '', confirmation: acc.confirmation || '', place_id: acc.place_id }); setHotelDayRange({ start: acc.start_day_id, end: acc.end_day_id }); setShowHotelPicker('edit') }}
+                        {canEditDays && <button onClick={() => { setAccommodation(acc); setHotelForm({ check_in: acc.check_in || '', check_in_end: acc.check_in_end || '', check_out: acc.check_out || '', confirmation: acc.confirmation || '', place_id: acc.place_id }); setHotelDayRange({ start: acc.start_day_id, end: acc.end_day_id }); setShowHotelPicker('edit') }}
                           style={{ background: 'none', border: 'none', cursor: 'pointer', padding: 3, flexShrink: 0 }}>
                           <Pencil size={12} style={{ color: 'var(--text-faint)' }} />
                         </button>}
@@ -368,7 +369,9 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
                       <div style={{ display: 'flex', gap: 0, margin: '0 12px 8px', borderRadius: 10, overflow: 'hidden', border: '1px solid var(--border-faint)' }}>
                         {acc.check_in && (
                           <div style={{ flex: 1, padding: '8px 10px', borderRight: '1px solid var(--border-faint)', textAlign: 'center' }}>
-                            <div style={{ fontSize: 12, fontWeight: 700, color: 'var(--text-primary)', lineHeight: 1.2 }}>{fmtTime(acc.check_in)}</div>
+                            <div style={{ fontSize: 12, fontWeight: 700, color: 'var(--text-primary)', lineHeight: 1.2 }}>
+                              {fmtTime(acc.check_in)}{acc.check_in_end ? ` – ${fmtTime(acc.check_in_end)}` : ''}
+                            </div>
                             <div style={{ fontSize: 9, color: 'var(--text-faint)', fontWeight: 500, marginTop: 2, display: 'flex', alignItems: 'center', justifyContent: 'center', gap: 3 }}>
                               <LogIn size={8} /> {t('day.checkIn')}
                             </div>
@@ -488,11 +491,15 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
 
                   {/* Check-in / Check-out / Confirmation */}
                   <div style={{ padding: '10px 18px', borderBottom: '1px solid var(--border-faint)', display: 'flex', gap: 8, flexWrap: 'wrap' }}>
-                    <div style={{ flex: 1, minWidth: 100 }}>
+                    <div style={{ flex: 1, minWidth: 80 }}>
                       <label style={{ fontSize: 9, fontWeight: 600, color: 'var(--text-faint)', textTransform: 'uppercase', letterSpacing: '0.04em', display: 'block', marginBottom: 3 }}>{t('day.checkIn')}</label>
                       <CustomTimePicker value={hotelForm.check_in} onChange={v => setHotelForm(f => ({ ...f, check_in: v }))} placeholder="14:00" />
                     </div>
-                    <div style={{ flex: 1, minWidth: 100 }}>
+                    <div style={{ flex: 1, minWidth: 80 }}>
+                      <label style={{ fontSize: 9, fontWeight: 600, color: 'var(--text-faint)', textTransform: 'uppercase', letterSpacing: '0.04em', display: 'block', marginBottom: 3 }}>{t('day.checkInUntil')}</label>
+                      <CustomTimePicker value={hotelForm.check_in_end} onChange={v => setHotelForm(f => ({ ...f, check_in_end: v }))} placeholder="22:00" />
+                    </div>
+                    <div style={{ flex: 1, minWidth: 80 }}>
                       <label style={{ fontSize: 9, fontWeight: 600, color: 'var(--text-faint)', textTransform: 'uppercase', letterSpacing: '0.04em', display: 'block', marginBottom: 3 }}>{t('day.checkOut')}</label>
                       <CustomTimePicker value={hotelForm.check_out} onChange={v => setHotelForm(f => ({ ...f, check_out: v }))} placeholder="11:00" />
                     </div>
@@ -570,11 +577,12 @@ export default function DayDetailPanel({ day, days, places, categories = [], tri
                         start_day_id: hotelDayRange.start,
                         end_day_id: hotelDayRange.end,
                         check_in: hotelForm.check_in || null,
+                        check_in_end: hotelForm.check_in_end || null,
                         check_out: hotelForm.check_out || null,
                         confirmation: hotelForm.confirmation || null,
                       })
                       setShowHotelPicker(false)
-                      setHotelForm({ check_in: '', check_out: '', confirmation: '', place_id: null })
+                      setHotelForm({ check_in: '', check_in_end: '', check_out: '', confirmation: '', place_id: null })
                       // Reload
                       accommodationsApi.list(tripId).then(d => {
                         const all = d.accommodations || []

client/src/components/Planner/ReservationModal.tsx

@@ -89,7 +89,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
     meta_airline: '', meta_flight_number: '', meta_departure_airport: '', meta_arrival_airport: '',
     meta_departure_timezone: '', meta_arrival_timezone: '',
     meta_train_number: '', meta_platform: '', meta_seat: '',
-    meta_check_in_time: '', meta_check_out_time: '',
+    meta_check_in_time: '', meta_check_in_end_time: '', meta_check_out_time: '',
     hotel_place_id: '', hotel_start_day: '', hotel_end_day: '',
   })
   const [isSaving, setIsSaving] = useState(false)
@@ -140,6 +140,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
         meta_platform: meta.platform || '',
         meta_seat: meta.seat || '',
         meta_check_in_time: meta.check_in_time || '',
+        meta_check_in_end_time: meta.check_in_end_time || '',
         meta_check_out_time: meta.check_out_time || '',
         hotel_place_id: (() => { const acc = accommodations.find(a => a.id == reservation.accommodation_id); return acc?.place_id || '' })(),
         hotel_start_day: (() => { const acc = accommodations.find(a => a.id == reservation.accommodation_id); return acc?.start_day_id || '' })(),
@@ -156,7 +157,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
         meta_airline: '', meta_flight_number: '', meta_departure_airport: '', meta_arrival_airport: '',
         meta_departure_timezone: '', meta_arrival_timezone: '',
         meta_train_number: '', meta_platform: '', meta_seat: '',
-        meta_check_in_time: '', meta_check_out_time: '',
+        meta_check_in_time: '', meta_check_in_end_time: '', meta_check_out_time: '',
       })
       setPendingFiles([])
     }
@@ -207,6 +208,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
         if (form.meta_arrival_timezone) metadata.arrival_timezone = form.meta_arrival_timezone
       } else if (form.type === 'hotel') {
         if (form.meta_check_in_time) metadata.check_in_time = form.meta_check_in_time
+        if (form.meta_check_in_end_time) metadata.check_in_end_time = form.meta_check_in_end_time
         if (form.meta_check_out_time) metadata.check_out_time = form.meta_check_out_time
       } else if (form.type === 'train') {
         if (form.meta_train_number) metadata.train_number = form.meta_train_number
@@ -245,6 +247,7 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
           start_day_id: form.hotel_start_day,
           end_day_id: form.hotel_end_day,
           check_in: form.meta_check_in_time || null,
+          check_in_end: form.meta_check_in_end_time || null,
           check_out: form.meta_check_out_time || null,
           confirmation: form.confirmation_number || null,
         }
@@ -526,11 +529,15 @@ export function ReservationModal({ isOpen, onClose, onSave, reservation, days, p
               </div>
             </div>
             {/* Check-in/out times + Status */}
-            <div className="grid grid-cols-3 gap-3">
+            <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
               <div>
                 <label style={labelStyle}>{t('reservations.meta.checkIn')}</label>
                 <CustomTimePicker value={form.meta_check_in_time} onChange={v => set('meta_check_in_time', v)} />
               </div>
+              <div>
+                <label style={labelStyle}>{t('reservations.meta.checkInUntil')}</label>
+                <CustomTimePicker value={form.meta_check_in_end_time} onChange={v => set('meta_check_in_end_time', v)} />
+              </div>
               <div>
                 <label style={labelStyle}>{t('reservations.meta.checkOut')}</label>
                 <CustomTimePicker value={form.meta_check_out_time} onChange={v => set('meta_check_out_time', v)} />

client/src/components/Planner/ReservationsPanel.tsx

@@ -230,7 +230,7 @@ function ReservationCard({ r, tripId, onEdit, onDelete, files = [], onNavigateTo
           if (meta.train_number) cells.push({ label: t('reservations.meta.trainNumber'), value: meta.train_number })
           if (meta.platform) cells.push({ label: t('reservations.meta.platform'), value: meta.platform })
           if (meta.seat) cells.push({ label: t('reservations.meta.seat'), value: meta.seat })
-          if (meta.check_in_time) cells.push({ label: t('reservations.meta.checkIn'), value: fmtTime('2000-01-01T' + meta.check_in_time) })
+          if (meta.check_in_time) cells.push({ label: t('reservations.meta.checkIn'), value: fmtTime('2000-01-01T' + meta.check_in_time) + (meta.check_in_end_time ? ` – ${fmtTime('2000-01-01T' + meta.check_in_end_time)}` : '') })
           if (meta.check_out_time) cells.push({ label: t('reservations.meta.checkOut'), value: fmtTime('2000-01-01T' + meta.check_out_time) })
           if (cells.length === 0) return null
           return (

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',

client/src/types.ts

@@ -241,6 +241,7 @@ export interface Accommodation {
   name: string
   address: string | null
   check_in: string | null
+  check_in_end: string | null
   check_out: string | null
   confirmation_number: string | null
   notes: string | null

server/src/db/migrations.ts

@@ -1610,6 +1610,11 @@ function runMigrations(db: Database.Database): void {
     () => {
       db.prepare("UPDATE addons SET enabled = 1 WHERE id = 'naver_list_import'").run();
     },
+
+    // Migration 102: Add check_in_end column for check-in time ranges
+    () => {
+      try { db.exec('ALTER TABLE day_accommodations ADD COLUMN check_in_end TEXT'); } catch (err: any) { if (!err.message?.includes('duplicate column name')) throw err; }
+    },
   ];
 
   if (currentVersion < migrations.length) {

server/src/db/schema.ts

@@ -334,6 +334,7 @@ function createTables(db: Database.Database): void {
       start_day_id INTEGER NOT NULL REFERENCES days(id) ON DELETE CASCADE,
       end_day_id INTEGER NOT NULL REFERENCES days(id) ON DELETE CASCADE,
       check_in TEXT,
+      check_in_end TEXT,
       check_out TEXT,
       confirmation TEXT,
       notes TEXT,

server/src/routes/days.ts

@@ -73,7 +73,7 @@ accommodationsRouter.post('/', authenticate, requireTripAccess, (req: Request, r
     return res.status(403).json({ error: 'No permission' });
 
   const { tripId } = req.params;
-  const { place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes } = req.body;
+  const { place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes } = req.body;
 
   if (!place_id || !start_day_id || !end_day_id) {
     return res.status(400).json({ error: 'place_id, start_day_id, and end_day_id are required' });
@@ -82,7 +82,7 @@ accommodationsRouter.post('/', authenticate, requireTripAccess, (req: Request, r
   const errors = dayService.validateAccommodationRefs(tripId, place_id, start_day_id, end_day_id);
   if (errors.length > 0) return res.status(404).json({ error: errors[0].message });
 
-  const accommodation = dayService.createAccommodation(tripId, { place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes });
+  const accommodation = dayService.createAccommodation(tripId, { place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes });
   res.status(201).json({ accommodation });
   broadcast(tripId, 'accommodation:created', { accommodation }, req.headers['x-socket-id'] as string);
   broadcast(tripId, 'reservation:created', {}, req.headers['x-socket-id'] as string);
@@ -98,12 +98,12 @@ accommodationsRouter.put('/:id', authenticate, requireTripAccess, (req: Request,
   const existing = dayService.getAccommodation(id, tripId);
   if (!existing) return res.status(404).json({ error: 'Accommodation not found' });
 
-  const { place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes } = req.body;
+  const { place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes } = req.body;
 
   const errors = dayService.validateAccommodationRefs(tripId, place_id, start_day_id, end_day_id);
   if (errors.length > 0) return res.status(404).json({ error: errors[0].message });
 
-  const accommodation = dayService.updateAccommodation(id, existing, { place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes });
+  const accommodation = dayService.updateAccommodation(id, existing, { place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes });
   res.json({ accommodation });
   broadcast(tripId, 'accommodation:updated', { accommodation }, req.headers['x-socket-id'] as string);
 });

server/src/services/dayService.ts

@@ -170,6 +170,7 @@ export interface DayAccommodation {
   start_day_id: number;
   end_day_id: number;
   check_in: string | null;
+  check_in_end: string | null;
   check_out: string | null;
   confirmation: string | null;
   notes: string | null;
@@ -220,17 +221,18 @@ interface CreateAccommodationData {
   start_day_id: number;
   end_day_id: number;
   check_in?: string;
+  check_in_end?: string;
   check_out?: string;
   confirmation?: string;
   notes?: string;
 }
 
 export function createAccommodation(tripId: string | number, data: CreateAccommodationData) {
-  const { place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes } = data;
+  const { place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes } = data;
 
   const result = db.prepare(
-    'INSERT INTO day_accommodations (trip_id, place_id, start_day_id, end_day_id, check_in, check_out, confirmation, notes) VALUES (?, ?, ?, ?, ?, ?, ?, ?)'
-  ).run(tripId, place_id, start_day_id, end_day_id, check_in || null, check_out || null, confirmation || null, notes || null);
+    'INSERT INTO day_accommodations (trip_id, place_id, start_day_id, end_day_id, check_in, check_in_end, check_out, confirmation, notes) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)'
+  ).run(tripId, place_id, start_day_id, end_day_id, check_in || null, check_in_end || null, check_out || null, confirmation || null, notes || null);
 
   const accommodationId = result.lastInsertRowid;
 
@@ -239,6 +241,7 @@ export function createAccommodation(tripId: string | number, data: CreateAccommo
   const startDayDate = (db.prepare('SELECT date FROM days WHERE id = ?').get(start_day_id) as { date: string } | undefined)?.date || null;
   const meta: Record<string, string> = {};
   if (check_in) meta.check_in_time = check_in;
+  if (check_in_end) meta.check_in_end_time = check_in_end;
   if (check_out) meta.check_out_time = check_out;
   db.prepare(`
     INSERT INTO reservations (trip_id, day_id, title, reservation_time, location, confirmation_number, notes, status, type, accommodation_id, metadata)
@@ -258,25 +261,27 @@ export function getAccommodation(id: string | number, tripId: string | number) {
 
 export function updateAccommodation(id: string | number, existing: DayAccommodation, fields: {
   place_id?: number; start_day_id?: number; end_day_id?: number;
-  check_in?: string; check_out?: string; confirmation?: string; notes?: string;
+  check_in?: string; check_in_end?: string; check_out?: string; confirmation?: string; notes?: string;
 }) {
   const newPlaceId = fields.place_id !== undefined ? fields.place_id : existing.place_id;
   const newStartDayId = fields.start_day_id !== undefined ? fields.start_day_id : existing.start_day_id;
   const newEndDayId = fields.end_day_id !== undefined ? fields.end_day_id : existing.end_day_id;
   const newCheckIn = fields.check_in !== undefined ? fields.check_in : existing.check_in;
+  const newCheckInEnd = fields.check_in_end !== undefined ? fields.check_in_end : existing.check_in_end;
   const newCheckOut = fields.check_out !== undefined ? fields.check_out : existing.check_out;
   const newConfirmation = fields.confirmation !== undefined ? fields.confirmation : existing.confirmation;
   const newNotes = fields.notes !== undefined ? fields.notes : existing.notes;
 
   db.prepare(
-    'UPDATE day_accommodations SET place_id = ?, start_day_id = ?, end_day_id = ?, check_in = ?, check_out = ?, confirmation = ?, notes = ? WHERE id = ?'
-  ).run(newPlaceId, newStartDayId, newEndDayId, newCheckIn, newCheckOut, newConfirmation, newNotes, id);
+    'UPDATE day_accommodations SET place_id = ?, start_day_id = ?, end_day_id = ?, check_in = ?, check_in_end = ?, check_out = ?, confirmation = ?, notes = ? WHERE id = ?'
+  ).run(newPlaceId, newStartDayId, newEndDayId, newCheckIn, newCheckInEnd, newCheckOut, newConfirmation, newNotes, id);
 
   // Sync check-in/out/confirmation to linked reservation
   const linkedRes = db.prepare('SELECT id, metadata FROM reservations WHERE accommodation_id = ?').get(Number(id)) as { id: number; metadata: string | null } | undefined;
   if (linkedRes) {
     const meta = linkedRes.metadata ? JSON.parse(linkedRes.metadata) : {};
     if (newCheckIn) meta.check_in_time = newCheckIn;
+    if (newCheckInEnd) meta.check_in_end_time = newCheckInEnd;
     if (newCheckOut) meta.check_out_time = newCheckOut;
     db.prepare('UPDATE reservations SET metadata = ?, confirmation_number = COALESCE(?, confirmation_number) WHERE id = ?')
       .run(JSON.stringify(meta), newConfirmation || null, linkedRes.id);

server/src/services/reservationService.ts

@@ -123,9 +123,9 @@ export function createReservation(tripId: string | number, data: CreateReservati
   // Sync check-in/out to accommodation if linked
   if (accommodation_id && metadata) {
     const meta = typeof metadata === 'string' ? JSON.parse(metadata) : metadata;
-    if (meta.check_in_time || meta.check_out_time) {
-      db.prepare('UPDATE day_accommodations SET check_in = COALESCE(?, check_in), check_out = COALESCE(?, check_out) WHERE id = ?')
-        .run(meta.check_in_time || null, meta.check_out_time || null, accommodation_id);
+    if (meta.check_in_time || meta.check_in_end_time || meta.check_out_time) {
+      db.prepare('UPDATE day_accommodations SET check_in = COALESCE(?, check_in), check_in_end = COALESCE(?, check_in_end), check_out = COALESCE(?, check_out) WHERE id = ?')
+        .run(meta.check_in_time || null, meta.check_in_end_time || null, meta.check_out_time || null, accommodation_id);
     }
     if (confirmation_number) {
       db.prepare('UPDATE day_accommodations SET confirmation = COALESCE(?, confirmation) WHERE id = ?')
@@ -257,9 +257,9 @@ export function updateReservation(id: string | number, tripId: string | number,
   const resolvedMeta = metadata !== undefined ? metadata : (current.metadata ? JSON.parse(current.metadata as string) : null);
   if (resolvedAccId && resolvedMeta) {
     const meta = typeof resolvedMeta === 'string' ? JSON.parse(resolvedMeta) : resolvedMeta;
-    if (meta.check_in_time || meta.check_out_time) {
-      db.prepare('UPDATE day_accommodations SET check_in = COALESCE(?, check_in), check_out = COALESCE(?, check_out) WHERE id = ?')
-        .run(meta.check_in_time || null, meta.check_out_time || null, resolvedAccId);
+    if (meta.check_in_time || meta.check_in_end_time || meta.check_out_time) {
+      db.prepare('UPDATE day_accommodations SET check_in = COALESCE(?, check_in), check_in_end = COALESCE(?, check_in_end), check_out = COALESCE(?, check_out) WHERE id = ?')
+        .run(meta.check_in_time || null, meta.check_in_end_time || null, meta.check_out_time || null, resolvedAccId);
     }
     const resolvedConf = confirmation_number !== undefined ? confirmation_number : current.confirmation_number;
     if (resolvedConf) {