fix opt 6 exit not working

also continue fix attempt on sheepit not starting

remote_worker_controller.ps1

@@ -5,9 +5,10 @@ param(
     [Parameter(Mandatory = $true)]
     [string]$WorkerType,
 
-    [Parameter(Mandatory = $true)]
     [string]$PayloadBase64,
 
+    [string]$PayloadBase64Path,
+
 [string]$DataRoot = (Join-Path ([Environment]::GetFolderPath('LocalApplicationData')) 'UnifiedWorkers'),
 
     [int]$MaxRestarts = 5,
@@ -16,6 +17,7 @@ param(
 )
 
 $ErrorActionPreference = 'Stop'
+[System.Management.Automation.Runspaces.Runspace]::DefaultRunspace = $Host.Runspace
 
 # region Path setup
 $workerRoot = Join-Path -Path $DataRoot -ChildPath $WorkerType
@@ -33,11 +35,95 @@ $commandPath = Join-Path -Path $stateRoot -ChildPath 'commands.txt'
 $payloadPath = Join-Path -Path $stateRoot -ChildPath "payload.ps1"
 # endregion
 
-# region Helpers
+# region Logging
+$logStream = [System.IO.FileStream]::new(
+    $logPath,
+    [System.IO.FileMode]::Append,
+    [System.IO.FileAccess]::Write,
+    [System.IO.FileShare]::ReadWrite
+)
+$logWriter = [System.IO.StreamWriter]::new($logStream, [System.Text.Encoding]::UTF8)
+$logWriter.AutoFlush = $true
+
+if (-not ("UnifiedWorkers.WorkerLogSink" -as [type])) {
+    Add-Type -Namespace UnifiedWorkers -Name WorkerLogSink -MemberDefinition @"
+using System;
+using System.Diagnostics;
+using System.IO;
+
+public sealed class WorkerLogSink
+{
+    private readonly TextWriter _writer;
+    private readonly string _prefix;
+    private readonly object _sync = new object();
+
+    public WorkerLogSink(TextWriter writer, string prefix)
+    {
+        if (writer == null)
+        {
+            throw new ArgumentNullException(\"writer\");
+        }
+        if (prefix == null)
+        {
+            throw new ArgumentNullException(\"prefix\");
+        }
+
+        _writer = writer;
+        _prefix = prefix;
+    }
+
+    public void OnData(object sender, DataReceivedEventArgs e)
+    {
+        if (e == null || string.IsNullOrEmpty(e.Data))
+        {
+            return;
+        }
+
+        lock (_sync)
+        {
+            var timestamp = DateTime.UtcNow.ToString("u");
+            var line = string.Format("[{0} {1}] {2}", _prefix, timestamp, e.Data);
+            _writer.WriteLine(line);
+            _writer.Flush();
+        }
+    }
+}
+"@
+}
+
+function Write-LogLine {
+    param(
+        [string]$Prefix,
+        [string]$Message
+    )
+
+    if (-not $logWriter) { return }
+    $timestamp = (Get-Date).ToString('u')
+    $logWriter.WriteLine("[{0} {1}] {2}" -f $Prefix, $timestamp, $Message)
+}
+
 function Write-ControllerLog {
     param([string]$Message)
-    $timestamp = (Get-Date).ToString('u')
-    Add-Content -Path $logPath -Value "[CTRL $timestamp] $Message" -Encoding UTF8
+    Write-LogLine -Prefix 'CTRL' -Message $Message
+}
+# endregion
+
+# region Helpers
+
+function Resolve-PayloadBase64 {
+    if ($PayloadBase64) {
+        return $PayloadBase64
+    }
+
+    if ($PayloadBase64Path) {
+        if (-not (Test-Path $PayloadBase64Path)) {
+            throw "Payload file '$PayloadBase64Path' not found."
+        }
+
+        return (Get-Content -Path $PayloadBase64Path -Raw)
+    }
+
+    throw "No payload data provided to controller."
 }
 
 function Write-Metadata {
@@ -85,9 +171,12 @@ function Get-PendingCommands {
 # record initial state before launching worker
 Write-Metadata -Status 'initializing' -WorkerPid $null -ControllerPid $PID -Restarts 0
 
+$resolvedPayloadBase64 = Resolve-PayloadBase64
+$PayloadBase64 = $resolvedPayloadBase64
+
 try {
     # Write payload script to disk
-    $payloadBytes = [Convert]::FromBase64String($PayloadBase64)
+    $payloadBytes = [Convert]::FromBase64String($resolvedPayloadBase64)
     [IO.File]::WriteAllBytes($payloadPath, $payloadBytes)
     Write-ControllerLog "Payload written to $payloadPath"
 }
@@ -128,23 +217,10 @@ while ($restartCount -le $MaxRestarts) {
         Write-ControllerLog "Worker process started with PID $($workerProcess.Id)"
         Write-Metadata -Status 'running' -WorkerPid $workerProcess.Id -ControllerPid $controllerPid -Restarts $restartCount
 
-        $logWriter = [System.IO.StreamWriter]::new($logPath, $true, [System.Text.Encoding]::UTF8)
-        $logWriter.AutoFlush = $true
-
-        $outputHandler = [System.Diagnostics.DataReceivedEventHandler]{
-            param($s, $e)
-            if ($e.Data) {
-                $ts = (Get-Date).ToString('u')
-                $logWriter.WriteLine("[OUT $ts] $($e.Data)")
-            }
-        }
-        $errorHandler = [System.Diagnostics.DataReceivedEventHandler]{
-            param($s, $e)
-            if ($e.Data) {
-                $ts = (Get-Date).ToString('u')
-                $logWriter.WriteLine("[ERR $ts] $($e.Data)")
-            }
-        }
+        $stdoutSink = [UnifiedWorkers.WorkerLogSink]::new($logWriter, 'OUT')
+        $stderrSink = [UnifiedWorkers.WorkerLogSink]::new($logWriter, 'ERR')
+        $outputHandler = [System.Diagnostics.DataReceivedEventHandler]$stdoutSink.OnData
+        $errorHandler = [System.Diagnostics.DataReceivedEventHandler]$stderrSink.OnData
 
         $workerProcess.add_OutputDataReceived($outputHandler)
         $workerProcess.add_ErrorDataReceived($errorHandler)
@@ -199,3 +275,10 @@ while ($restartCount -le $MaxRestarts) {
 Write-Metadata -Status 'inactive' -WorkerPid $null -ControllerPid $controllerPid -Restarts $restartCount
 Write-ControllerLog "Controller exiting."
 
+if ($logWriter) {
+    $logWriter.Dispose()
+}
+if ($logStream) {
+    $logStream.Dispose()
+}
+