test(smoke): idxprobe — AdsConnect for /ads local mode

ADSCDX local-mode USE needs an AdsConnect first (ADSCDX/4097
unknown connection otherwise); idxprobe could not run /ads.
Adds idxcheck_build.bat as the build+run driver.

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

Author: FiveTechSoft

tests/smoke/harbour/idxcheck_build.bat

@@ -0,0 +1,18 @@
+@echo off
+call "C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat" >nul
+set ACE=C:\OpenADS\build\release-x64\src\Release
+set PATH=c:\harbour\bin\win\msvc64;%ACE%;%PATH%
+cd /d "%~dp0"
+echo [idx] hbmk2 build...
+hbmk2 -comp=msvc64 -gtcgi -I"c:\harbour\contrib\rddads" -lrddads -L"%ACE%" -lace64 -llegacy_stdio_definitions -loldnames idxprobe.prg
+if errorlevel 1 goto :err
+echo.
+echo [idx] === DBFCDX baseline ===
+.\idxprobe.exe
+echo.
+echo [idx] === ADSCDX -^> OpenADS ===
+.\idxprobe.exe /ads
+goto :eof
+:err
+echo BUILD FAILED %errorlevel%
+exit /b %errorlevel%

tests/smoke/harbour/idxprobe.prg

@@ -24,10 +24,14 @@ PROCEDURE Main( cMode )
    StageDbf( cDir, cDbf, aNames )
 
    IF lAds
-      AdsSetServerType( 1 )
-      AdsSetFileType( 2 )
+      AdsSetFileType( 2 )        // ADS_CDX / FoxPro
+      AdsSetServerType( 1 )      // ADS_LOCAL_SERVER
+      IF ! AdsConnect( cDir )
+         ? "AdsConnect failed for " + cDir
+         RETURN
+      ENDIF
       RddSetDefault( "ADSCDX" )
-      USE ( cDbf ) VIA "ADSCDX" ALIAS T SHARED NEW
+      USE ( "idx" ) VIA "ADSCDX" ALIAS T SHARED NEW
    ELSE
       RddSetDefault( "DBFCDX" )
       USE ( cDbf ) ALIAS T SHARED NEW