feat(listings): add ROOM_RENTAL, CONDOTEL, SERVICED_APARTMENT property types (GOO-20)
- Add ROOM_RENTAL, CONDOTEL, SERVICED_APARTMENT to PropertyType enum in schema.prisma
- Create migration 20260422010000_add_room_rental_property_types with ALTER TYPE ADD VALUE
- Add DEFAULT_RANGES in PrismaPriceValidator: ROOM_RENTAL 1M-10M VND/month, CONDOTEL 20M-300M, SERVICED_APARTMENT 20M-250M VND/m²
- Add i18n translations: vi "Phòng trọ / Condotel / Căn hộ dịch vụ", en "Room Rental / Condotel / Serviced Apartment"
- Typesense indexes propertyType as a generic string facet — no schema change needed
Co-Authored-By: Paperclip <noreply@paperclip.ing>
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