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/CompleteSearch2.sql

@@ -0,0 +1,22 @@
+CREATE PROCEDURE [dbo].[CompleteSearch2] (
+     @p_SearchID INT,
+     @p_WasSuccessful BIT,
+     @p_Results VARBINARY(MAX)
+    )
+AS
+    DECLARE @v_Status INT;
+
+    BEGIN
+		--Determine status code
+        SET @v_Status = CASE @p_WasSuccessful
+                          WHEN 1 THEN 3
+                          ELSE 4
+                        END;
+
+		--Update search status and results
+        UPDATE  dbo.Search2
+        SET     Status = @v_Status,
+                Results = @p_Results,
+				EndDT = GETDATE()
+        WHERE   ID = @p_SearchID;
+    END