Refactor updater script for Windows application restart handling

- Simplified the script for restarting the application by removing unnecessary process checks and sleep logic.
- Introduced a new variable for the application directory to ensure the correct working directory is set before launching the application.
- Updated the method of executing the restart script to use `spawn` instead of `schtasks`, improving reliability and clarity in the restart process.

src/desktop/updater-runner.js

@@ -129,37 +129,25 @@ const spawnDetachedWindowsRestart = ({ appLaunchPath, parentPid }) => {
   )
   const scriptPath = path.join(updateDir, `restart-${parentPid}.bat`)
   const appLaunchWin = appLaunchPath.replaceAll('/', '\\')
-  const scriptWin = scriptPath.replaceAll('/', '\\')
+  const appDirWin = path.dirname(appLaunchWin)
 
   const script = `@echo off
 setlocal
 
 set "PARENT_PID=${parentPid}"
 set "APP_LAUNCHER=${appLaunchWin}"
+set "APP_DIR=${appDirWin}"
 
 :waitparent
-tasklist /FI "PID eq %PARENT_PID%" 2>NUL | find /I "%PARENT_PID%" >NUL && (
+tasklist /FI "PID eq %PARENT_PID%" 2>NUL | find "%PARENT_PID%" >NUL && (
   timeout /t 1 /nobreak >nul
   goto waitparent
 )
 
-:waitprocesses
-tasklist /FI "IMAGENAME eq launcher.exe" 2>NUL | find /I /N "launcher.exe">NUL && goto waitsleep
-tasklist /FI "IMAGENAME eq bun.exe" 2>NUL | find /I /N "bun.exe">NUL && goto waitsleep
-tasklist 2>NUL | find /I "bun Helper">NUL && goto waitsleep
-goto waitdone
-:waitsleep
-timeout /t 1 /nobreak >nul
-goto waitprocesses
-:waitdone
-
 timeout /t 2 /nobreak >nul
+cd /d "%APP_DIR%"
 start "" "%APP_LAUNCHER%"
 
-for /f "tokens=1" %%t in ('schtasks /query /fo list ^| findstr /i "FarmControlRestart_"') do (
-  schtasks /delete /tn "%%t" /f >nul 2>&1
-)
-
 ping -n 2 127.0.0.1 >nul
 del "%~f0"
 `
@@ -167,15 +155,12 @@ del "%~f0"
   mkdirSync(updateDir, { recursive: true })
   writeFileSync(scriptPath, script, 'utf8')
 
-  const taskName = `FarmControlRestart_${parentPid}_${Date.now()}`
-  execSync(
-    `schtasks /create /tn ${quoteBatchArg(taskName)} /tr ${quoteBatchArg(`cmd /c "${scriptWin}"`)} /sc once /st 00:00 /f`,
-    { stdio: 'ignore', windowsHide: true }
-  )
-  execSync(`schtasks /run /tn ${quoteBatchArg(taskName)}`, {
+  const child = spawn('cmd.exe', ['/c', scriptPath], {
+    detached: true,
     stdio: 'ignore',
     windowsHide: true
   })
+  child.unref()
 }
 
 export const scheduleAppRestart = ({ parentPid = process.pid } = {}) => {