Prepare Linux delivery and correct lifecycle rendering build types

harness/fixtures/rest-coverage/run-coverage-probe.ps1

@@ -1,3 +1,4 @@
+#requires -Version 7.0
 param([Parameter(Mandatory=$true)][string]$ServerExe)
 $ErrorActionPreference = 'Stop'
 $taskRoot = (Resolve-Path (Join-Path $PSScriptRoot '../../..')).Path
@@ -21,7 +22,16 @@ $codes = @($payload.expected | ForEach-Object { $_.code })
 function Assert-Probe($condition,[string]$message) { if (-not $condition) { throw $message } }
 function Start-ProbeServer {
     $script:launch++
-    $script:probeProcess = Start-Process -FilePath $exe -ArgumentList @('--bind',"127.0.0.1:$probePort",'--data-dir',('"'+$storePath+'"'),'--token-file',('"'+$tokenPath+'"')) -WindowStyle Hidden -PassThru -RedirectStandardOutput (Join-Path $runRoot "server-$script:launch.stdout.log") -RedirectStandardError (Join-Path $runRoot "server-$script:launch.stderr.log")
+    $startOptions = @{
+        FilePath = $exe
+        ArgumentList = @('--bind',"127.0.0.1:$probePort",'--data-dir',('"'+$storePath+'"'),'--token-file',('"'+$tokenPath+'"'))
+        PassThru = $true
+        RedirectStandardOutput = Join-Path $runRoot "server-$script:launch.stdout.log"
+        RedirectStandardError = Join-Path $runRoot "server-$script:launch.stderr.log"
+    }
+    # WindowStyle is Windows-only; Unix keeps the child attached to this probe.
+    if ($IsWindows) { $startOptions.WindowStyle = 'Hidden' }
+    $script:probeProcess = Start-Process @startOptions
     for ($attempt = 0; $attempt -lt 40; $attempt++) {
         if ($script:probeProcess.HasExited) { throw 'Probe server exited before readiness' }
         try { $ready=Invoke-WebRequest "$base/health/ready" -TimeoutSec 1; if ($ready.StatusCode -eq 200) { return } } catch {}