Check in only when expected time within 10 minutes

src/main/kotlin/com/android/trisolarisserver/controller/BookingFlow.kt

@@ -76,7 +76,7 @@ class BookingFlow(
         }
 
         val now = nowForProperty(property.timezone)
-        val shouldCheckIn = !expectedCheckInAt.isBefore(now)
+        val shouldCheckIn = !expectedCheckInAt.isAfter(now.plusMinutes(10))
         val phone = request.guestPhoneE164?.trim()?.takeIf { it.isNotBlank() }
         val guest = resolveGuestForBooking(propertyId, property, actor, now, phone)
         val hasGuestCounts = request.maleCount != null || request.femaleCount != null || request.childCount != null