fix(windows): give Start-Process distinct stdout/stderr files

Start-Process refuses to use the same path for both -RedirectStandardOutput
and -RedirectStandardError, which broke the Ollama serve helper and the
CI run.ps1 smoke. Split into .out.log / .err.log.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: claude

.github/workflows/ci.yml

@@ -217,16 +217,18 @@ jobs:
           TUTOR_SKIP_OLLAMA: "1"
         run: |
           $ErrorActionPreference = 'Stop'
-          $log = Join-Path $env:RUNNER_TEMP 'run-ps1-smoke.log'
-          New-Item -ItemType File -Force -Path $log | Out-Null
+          $outLog = Join-Path $env:RUNNER_TEMP 'run-ps1-smoke.out.log'
+          $errLog = Join-Path $env:RUNNER_TEMP 'run-ps1-smoke.err.log'
+          New-Item -ItemType File -Force -Path $outLog | Out-Null
+          New-Item -ItemType File -Force -Path $errLog | Out-Null
           # Launch run.ps1 in a detached pwsh so the parent job can poll
           # /api/health without waiting on Start-Job module init.
-          $args = @(
+          $procArgs = @(
             '-NoProfile','-NoLogo','-File','run.ps1',
             '-SkipOllama','-Port','8802'
           )
-          $proc = Start-Process -FilePath 'pwsh' -ArgumentList $args `
-            -RedirectStandardOutput $log -RedirectStandardError $log `
+          $proc = Start-Process -FilePath 'pwsh' -ArgumentList $procArgs `
+            -RedirectStandardOutput $outLog -RedirectStandardError $errLog `
             -PassThru -WorkingDirectory (Get-Location).Path
           try {
             $ok = $false
@@ -240,8 +242,10 @@ jobs:
               if ($proc.HasExited) { break }
             }
             if (-not $ok) {
-              Write-Host '--- run.ps1 output ---'
-              if (Test-Path $log) { Get-Content -LiteralPath $log }
+              Write-Host '--- run.ps1 stdout ---'
+              if (Test-Path $outLog) { Get-Content -LiteralPath $outLog }
+              Write-Host '--- run.ps1 stderr ---'
+              if (Test-Path $errLog) { Get-Content -LiteralPath $errLog }
               throw "/api/health did not return 200 within 120s (proc exited=$($proc.HasExited))"
             }
             Write-Host 'ok  /api/health -> 200'

install.ps1

@@ -430,24 +430,26 @@ function Install-OllamaNow {
 
 function Start-OllamaNow {
     Say "starting 'ollama serve' in the background"
-    $logPath = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.log'
+    # Start-Process requires distinct files for stdout vs stderr.
+    $outLog = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.out.log'
+    $errLog = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.err.log'
     try {
         $p = Start-Process -FilePath 'ollama' -ArgumentList 'serve' `
-            -RedirectStandardOutput $logPath -RedirectStandardError $logPath `
+            -RedirectStandardOutput $outLog -RedirectStandardError $errLog `
             -WindowStyle Hidden -PassThru
     } catch {
         ErrMsg "failed to start 'ollama serve': $($_.Exception.Message)"
         return $false
     }
     for ($i = 0; $i -lt 20; $i++) {
         if (Test-OllamaDaemon) {
-            Ok ("ollama serve is up (pid {0}; log: {1})" -f $p.Id, $logPath)
+            Ok ("ollama serve is up (pid {0}; logs: {1}, {2})" -f $p.Id, $outLog, $errLog)
             return $true
         }
         Start-Sleep -Milliseconds 500
     }
     ErrMsg 'ollama serve did not become reachable on :11434 within 10s.'
-    ErrMsg "Inspect $logPath or run 'ollama serve' in another terminal."
+    ErrMsg "Inspect $outLog / $errLog or run 'ollama serve' in another terminal."
     return $false
 }
 

run.ps1

@@ -153,18 +153,19 @@ function Test-OllamaDaemon {
 
 function Start-OllamaNow {
     Say "starting 'ollama serve' in the background"
-    $logPath = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.log'
+    $outLog = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.out.log'
+    $errLog = Join-Path ([IO.Path]::GetTempPath()) 'ollama-serve.err.log'
     try {
         $p = Start-Process -FilePath 'ollama' -ArgumentList 'serve' `
-            -RedirectStandardOutput $logPath -RedirectStandardError $logPath `
+            -RedirectStandardOutput $outLog -RedirectStandardError $errLog `
             -WindowStyle Hidden -PassThru
     } catch {
         ErrMsg "failed to start 'ollama serve': $($_.Exception.Message)"
         return $false
     }
     for ($i = 0; $i -lt 20; $i++) {
         if (Test-OllamaDaemon) {
-            Ok ("ollama serve is up (pid {0}; log: {1})" -f $p.Id, $logPath)
+            Ok ("ollama serve is up (pid {0}; logs: {1}, {2})" -f $p.Id, $outLog, $errLog)
             return $true
         }
         Start-Sleep -Milliseconds 500