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/DcsLot.cs

@@ -0,0 +1,30 @@
+using System;
+
+namespace DataModel.Models
+{
+    /// <summary>
+    /// DCS lot record
+    /// </summary>
+   public class DcsLot
+    {
+        /// <summary>
+        /// Item number for lot of parts
+        /// </summary>
+        public string ItemNumber { get; set; }
+
+        /// <summary>
+        /// Lot number for lot of parts
+        /// </summary>
+        public string LotNumber { get; set; }
+
+        /// <summary>
+        /// Lot suffix for lot of parts
+        /// </summary>
+        public string LotSuffix { get; set; }
+
+        /// <summary>
+        /// Timestamp of last update to record
+        /// </summary>
+        public DateTime LastUpdateDT { get; set; }
+    }
+}