add launcher

launcher/setup.bat

@@ -0,0 +1,35 @@
+@echo off
+setlocal
+
+set "TASK_NAME=qmt_launcher"
+set "LAUNCHER_EXE=%~dp0start.exe"
+if not exist "%LAUNCHER_EXE%" (
+    call "%~dp0build.bat"
+    if errorlevel 1 (
+        echo Failed to prepare start.exe.
+        pause
+        exit /b 1
+    )
+)
+
+powershell.exe -NoProfile -ExecutionPolicy Bypass -Command ^
+  "$ErrorActionPreference = 'Stop';" ^
+  "$taskName = '%TASK_NAME%';" ^
+  "$launcherDir = (Resolve-Path -LiteralPath '%~dp0').Path;" ^
+  "$workingDir = Split-Path -Parent $launcherDir;" ^
+  "$launcherExe = Join-Path $launcherDir 'start.exe';" ^
+  "$action = New-ScheduledTaskAction -Execute $launcherExe -WorkingDirectory $workingDir;" ^
+  "$trigger = New-ScheduledTaskTrigger -AtLogOn -User ([System.Security.Principal.WindowsIdentity]::GetCurrent().Name);" ^
+  "$principal = New-ScheduledTaskPrincipal -UserId ([System.Security.Principal.WindowsIdentity]::GetCurrent().Name) -LogonType Interactive -RunLevel Highest;" ^
+  "$settings = New-ScheduledTaskSettingsSet -Hidden:$false;" ^
+  "Register-ScheduledTask -TaskName $taskName -Action $action -Trigger $trigger -Principal $principal -Settings $settings -Force | Out-Null"
+
+if errorlevel 1 (
+    echo Failed to create task "%TASK_NAME%".
+    pause
+    exit /b 1
+)
+
+echo Task "%TASK_NAME%" created or updated successfully with a visible window.
+pause
+exit /b 0