Point search pipeline at Search2 table and *2 procs for v5 POC

Re-target all search reads, writes, and stored proc calls to dbo.Search2 /
SubmitSearch2 / StartSearch2 / CompleteSearch2 / ResetPartialSearches2 so
the POC can run side-by-side with prod against the same QA database
without contending on the Search table or its procs. Standalone deployment
SQL for the new table and procs lives in OLD/sql/ and must be run against
the target DB before the POC apps are started.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

OLD/sql/SubmitSearch2.sql

@@ -0,0 +1,28 @@
+CREATE PROCEDURE [dbo].[SubmitSearch2] (
+     @p_UserName VARCHAR(128),
+     @p_Name VARCHAR(128),
+     @p_Criteria VARCHAR(MAX),
+     @o_SearchID INT OUTPUT
+    )
+AS
+    BEGIN
+		--Insert new search record
+        INSERT  INTO Search2
+                (
+                 UserName,
+                 Name,
+                 Status,
+                 SubmitDT,
+                 Criteria
+                )
+        VALUES  (
+                 @p_UserName,
+                 @p_Name,
+                 1,
+                 GETDATE(),
+                 @p_Criteria
+                );
+
+		--Get assigned auto-ID
+        SET @o_SearchID = SCOPE_IDENTITY();
+    END