- Add assigned_to column support in TicketModel with assignTicket() and unassignTicket() methods
- Create assign_ticket.php API endpoint for assignment operations
- Update TicketController to load user list from UserModel
- Add assignment dropdown UI in TicketView
- Add JavaScript handler for assignment changes
- Integrate with audit log for assignment tracking
Users can now assign tickets to team members via dropdown selector.
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>