Initial commit: JDE Scoping Tool migration project

Set up repository with legacy .NET Framework 4.8 source (OLD/),
new .NET 10 Blazor solution (NEW/), OpenSpec specifications,
documentation, and project configuration.

OLD/DataModel/Models/WorkOrderStep.cs

@@ -0,0 +1,81 @@
+using System;
+using DataModel.Helpers;
+
+namespace DataModel.Models
+{
+    /// <summary>
+    /// JDE work order step model
+    /// </summary>
+    public class WorkOrderStep
+    {
+        /// <summary>
+        /// Unique number for workorder
+        /// </summary>
+        public long WorkOrderNumber { get; set; }
+
+        /// <summary>
+        /// Unique code for branch
+        /// </summary>
+        public string BranchCode { get; set; }
+
+        /// <summary>
+        /// Unique code for work center
+        /// </summary>
+        public string WorkCenterCode { get; set; }
+
+        /// <summary>
+        /// Operation sequence number
+        /// </summary>
+        public decimal StepNumber { get; set; }
+
+        /// <summary>
+        /// Operation sequence description
+        /// </summary>
+        public string StepDescription { get; set; }
+
+        /// <summary>
+        /// Function operation description (long text)
+        /// </summary>
+        public string FunctionOperationDescription { get; set; }
+
+        /// <summary>
+        /// Operation sequence type
+        /// </summary>
+        public string StepTypeCode { get; set; }
+
+        /// <summary>
+        /// Timestamp when work step began
+        /// </summary>
+        public DateTime? StartDT { get; set; }
+
+        /// <summary>
+        /// Timestamp when work step ended
+        /// </summary>
+        public DateTime? EndDT { get; set; }
+
+        /// <summary>
+        /// Operation function code
+        /// </summary>
+        public string FunctionCode { get; set; }
+
+        /// <summary>
+        /// Quantity scrapped/cancelled
+        /// </summary>
+        public decimal ScrappedQuantity { get; set; }
+
+        /// <summary>
+        /// Date of last update to record
+        /// </summary>
+        private int LastUpdateDate { get; }
+
+        /// <summary>
+        /// Time of day of last update to record
+        /// </summary>
+        private int LastUpdateTime { get; }
+
+        /// <summary>
+        /// Timestamp of last update to record
+        /// </summary>
+        public DateTime LastUpdateDT => LastUpdateDate.FromJDEDate().FromJDEDateTime(LastUpdateTime);
+    }
+}