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.

NEW/src/JdeScoping.Database/Scripts/008_CreateItemTable.sql

@@ -0,0 +1,24 @@
+-- Migration: 008_CreateItemTable
+-- Source: OLD/Database/Tables/Item.sql
+-- Changes: DATETIME -> DATETIME2(7)
+
+IF NOT EXISTS (SELECT * FROM sys.tables WHERE name = 'Item' AND schema_id = SCHEMA_ID('dbo'))
+BEGIN
+    CREATE TABLE [dbo].[Item]
+    (
+        [ShortItemNumber] BIGINT NOT NULL,
+        [ItemNumber] VARCHAR(25) NOT NULL,
+        [Description] VARCHAR(30) NULL,
+        [PlanningFamily] VARCHAR(3) NULL,
+        [StockingType] CHAR(1) NULL,
+        [LastUpdateDT] DATETIME2(7) NOT NULL,
+        CONSTRAINT [PK_Item] PRIMARY KEY CLUSTERED([ShortItemNumber])
+    );
+END
+GO
+
+IF NOT EXISTS (SELECT * FROM sys.indexes WHERE name = 'IX_Item_ItemNumber' AND object_id = OBJECT_ID('dbo.Item'))
+BEGIN
+    CREATE INDEX [IX_Item_ItemNumber] ON [dbo].[Item]([ItemNumber]);
+END
+GO