windows: write steam_appid.txt before starting (the cause of the Steam error box); start the server window minimized

Co-Authored-By: Claude Opus 5.5 <[email protected]>

windows/common.ps1

@@ -334,11 +334,15 @@ function Start-CsServer($root) {
   $y = $y -replace '(?m)^yb_difficulty ".*"', ('yb_difficulty "' + [int]$s.CS_BOT_DIFFICULTY + '"')
   Write-TextFile $ycfg $y
   $hargs = "-console -condebug -game cstrike -port $([int]$s.CS_PORT) +maxplayers $([int]$s.CS_MAXPLAYERS) +map $($s.CS_MAP) +log on"
-  # On the first start after an install, the server's Steam part sets itself up and the server
-  # stops with a "Fatal error: Unable to initialize Steam" box. A new start works, so that box
-  # gets the server closed and started again.
+  # A fresh install has no steam_appid.txt. hlds writes it while starting, but too late: Steam
+  # has already failed and the server sits on a "Fatal error: Unable to initialize Steam" box.
+  # 10 = Counter-Strike.
+  $appid = Join-Path $h 'steam_appid.txt'
+  if (-not (Test-Path -LiteralPath $appid) -or [IO.File]::ReadAllText($appid).Trim() -ne '10') { Write-TextFile $appid "10`r`n" }
+  # If that box still shows up, close the server and start it again. The window starts minimized
+  # so it doesn't take the keyboard away from whatever you're doing.
   for ($try = 1; $try -le 3; $try++) {
-    $p = Start-Process -FilePath (Join-Path $h 'hlds.exe') -WorkingDirectory $h -ArgumentList $hargs -PassThru
+    $p = Start-Process -FilePath (Join-Path $h 'hlds.exe') -WorkingDirectory $h -ArgumentList $hargs -PassThru -WindowStyle Minimized
     if (-not (Test-SteamFailure $p ([int]$s.CS_PORT))) { break }
     Stop-Process -Id $p.Id -Force -ErrorAction SilentlyContinue
     Start-Sleep -Seconds 2