fix: DOS 6.22 compatibility - remove 2>NUL, add XCOPY /I flag

DOS 6.22 does not support stderr redirection (2>NUL), only stdout (>NUL).
Added /I flag to XCOPY to assume destination is directory.
Added CD \ATE and menux to AUTOEXEC.BAT generation.

Changes:
- CTONW.BAT v2.5: Removed 2>NUL from MD commands, added /I to XCOPY
- NWTOC.BAT v2.8: Removed 2>NUL from MD commands, added /I to XCOPY
- DEPLOY.BAT v2.3: Removed 2>NUL, added CD \ATE and menux to AUTOEXEC

Tested successfully on TS-4R and TS-3R DOS machines.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

projects/dataforth-dos/batch-files/DEPLOY.BAT

@@ -1,7 +1,7 @@
 @ECHO OFF
 REM One-time deployment script for DOS Update System
 REM Usage: T:\COMMON\ProdSW\DEPLOY.BAT machine-name
-REM Version: 2.2 - XCOPY /Y for unattended operation (DOS 6.22)
+REM Version: 2.3 - Removed 2>NUL (DOS 6.22 only supports >NUL)
 REM Last modified: 2026-01-20
 
 CLS
@@ -22,9 +22,9 @@ ECHO Press any key to install...
 PAUSE >NUL
 ECHO.
 
-REM Create directories (ignore errors)
-MD C:\BAT >NUL 2>NUL
-MD T:\%MACHINE% >NUL 2>NUL
+REM Create directories (ignore errors with >NUL)
+MD C:\BAT >NUL
+MD T:\%MACHINE% >NUL
 
 ECHO [1/2] Copying batch files to C:\BAT...
 XCOPY T:\COMMON\ProdSW\NWTOC.BAT C:\BAT /Y >NUL
@@ -45,7 +45,7 @@ ECHO SET PATH=C:\DOS;C:\NET;C:\BAT;C:\BATCH;C:\ >> C:\AUTOEXEC.BAT
 ECHO PROMPT $P$G >> C:\AUTOEXEC.BAT
 ECHO SET TEMP=C:\TEMP >> C:\AUTOEXEC.BAT
 ECHO SET TMP=C:\TEMP >> C:\AUTOEXEC.BAT
-ECHO MD C:\TEMP >NUL 2>NUL >> C:\AUTOEXEC.BAT
+ECHO MD C:\TEMP >NUL >> C:\AUTOEXEC.BAT
 ECHO CLS >> C:\AUTOEXEC.BAT
 ECHO ECHO. >> C:\AUTOEXEC.BAT
 ECHO ECHO Dataforth Test Machine: %MACHINE% >> C:\AUTOEXEC.BAT
@@ -61,6 +61,8 @@ ECHO :READY >> C:\AUTOEXEC.BAT
 ECHO ECHO. >> C:\AUTOEXEC.BAT
 ECHO ECHO System Ready >> C:\AUTOEXEC.BAT
 ECHO ECHO. >> C:\AUTOEXEC.BAT
+ECHO CD \ATE >> C:\AUTOEXEC.BAT
+ECHO menux >> C:\AUTOEXEC.BAT
 ECHO [OK] AUTOEXEC.BAT installed with MACHINE=%MACHINE%
 ECHO.