Module: Tickets

Support ticket lifecycle with comments. Module Order = 700.

Entities / DbContext: Ticket (aggregate, soft-deletable, state machine) + TicketComment. TicketsDbContext. TicketStatus/TicketPriority enums in Contracts; domain events internal. Areas: Create, Assign, Resolve, Reopen, Restore, AddComment, ListComments, GetById, Search, ListTrashed. Full list: Features/v1/ or /scalar.

Gotchas

• State machine (Domain/Ticket.cs): Open → InProgress → Resolved → Closed. Illegal transitions throw CustomException with HttpStatusCode.Conflict (409) — not a generic 400. Assigning auto-starts (Open→InProgress); unassigning an InProgress ticket reverts to Open; creating with an assignee starts at InProgress. Closed tickets reject comments/resolve until reopened. Keep all transition guards in the aggregate.
• Soft-delete/restore/trash pattern is identical to Catalog (filtered unique indexes — see modules/catalog.md).
• Endpoints are mapped on the bare api/v{version} group (no /tickets sub-path); literal routes precede {ticketId:guid}.