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/WorkerService/Models/Index.cs

@@ -0,0 +1,28 @@
+namespace WorkerService.Models
+{
+    /// <summary>
+    /// Table index
+    /// </summary>
+    public class Index
+    {
+        /// <summary>
+        /// Name of index
+        /// </summary>
+        public string Name { get; set; }
+
+        /// <summary>
+        /// Whether or not the index is a primary key
+        /// </summary>
+        public bool IsPrimaryKey { get; set; }
+
+        /// <summary>
+        /// Whether or not the index is unique
+        /// </summary>
+        public bool IsUnique { get; set; }
+
+        /// <summary>
+        /// Whether or not the index is unique constraint
+        /// </summary>
+        public bool IsUniqueConstraint { get; set; }
+    }
+}