feat: add Flutter mobile clients and staff delivery API

backend/api/internal/logic/client/staff/work.go

@@ -92,6 +92,21 @@ func ListTickets(ctx *gin.Context) {
 	infra.Response.Success(ctx, base.ResourceResponse(list))
 }
 
+// GetTicket 按公开 identity 返回当前工作人员被分派的单一工单。
+func GetTicket(ctx *gin.Context) {
+	account, ok := clientcommon.StaffAccount(ctx)
+	if !ok {
+		return
+	}
+	var ticket models.CsTicket
+	if impl.DBService.Where("identity = ? AND staff_account_id = ? AND status <> ?", ctx.Param("identity"), account.ID, base.StatusArchived).
+		First(&ticket).Error != nil {
+		infra.Response.Error(ctx, errcode.ErrRecordNotFound)
+		return
+	}
+	infra.Response.Success(ctx, base.ResourceResponse(ticket))
+}
+
 // StartTicket 将本人已分派工单置为处理中。
 func StartTicket(ctx *gin.Context) {
 	updateTicketStatus(ctx, 18, 11, nil)