Design a hotel domain model covering room types and rooms, guests, a half-open date-range value object, the reservation lifecycle, room assignment, check-in/out, and a charges folio, while preventing overbooking of a room type and overlapping stays on the same room.
Design a hotel management system: guests reserve a room type for a date range, the hotel assigns a specific room, and the stay goes through check-in and check-out while charges accumulate on a folio. No two stays on the same room may overlap. Start by clarifying scope and the core objects.
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