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/Database/Tables/JdeUser.sql

@@ -0,0 +1,18 @@
+CREATE TABLE [dbo].[JdeUser]
+(
+    [AddressNumber] BIGINT NOT NULL,
+	[UserID] VARCHAR(10) NULL, 
+    [FullName] VARCHAR(40) NOT NULL,
+	[LastUpdateDT] DATETIME NOT NULL, 
+    CONSTRAINT [PK_JdeUser] PRIMARY KEY CLUSTERED([AddressNumber])
+)
+
+GO
+
+CREATE INDEX [IX_JdeUser_UserID] ON [dbo].[JdeUser] ([UserID])
+
+GO
+
+CREATE INDEX [IX_JdeUser_FullName] ON [dbo].[JdeUser] ([FullName])
+
+GO