Domain Flows: Orders & Vehicles

Orders lifecycle:

• Create/edit/check-in/check-out: resolvers under server/graphql/resolvers/mutation/UpdateOrder/*
• Status transitions: ChangeOrderStatusService, enums OrderStatus
• Pricing & calculators: lib/calculators.js, seasonal tariffs (seasons_tariffs_matrix), extra services, insurances
• Date availability: OrderAvailabilityService; orders.date_range gist index used for overlaps

Vehicles:

• CRUD via VehicleService; associations to brands/models/extra services, reminders
• Partner vs own fleets, marketplace flags

Invoices & Payments:

• InvoiceService, PaymentService, Stripe handlers, invoice series management

Clients & Partners:

• ClientService, PartnerService, UserTenantsService; blacklisting, documents

Reminders & Balances:

• VehicleRemindersService, VehicleReminderHistoriesService, VehicleBalanceService, VehiclePurchaseService