"Add Windows installer and driver training rewards"

windows/stop_all.bat

@@ -1,11 +1,13 @@
 @echo off
 setlocal
 
-for /f "tokens=5" %%p in ('netstat -ano ^| findstr ":8081" ^| findstr "LISTENING"') do (
-  taskkill /PID %%p /F >nul 2>&1
-)
+for %%I in ("%~dp0..") do set "APP_DIR=%%~fI"
+
+pushd "%APP_DIR%"
+if exist "node_modules" call npm.cmd stop
+popd
 
 taskkill /IM ammc-amb.exe /F >nul 2>&1
 
-echo [OK] Stopped backend on :8081 and ammc-amb.exe (if running)
+echo [OK] Stopped RaceController and ammc-amb.exe (if running)
 endlocal