param([ValidateSet('list','focused','all','clippy')][string]$Stage)
$ErrorActionPreference='Stop'
$taskWorkspace='C:\Users\User\Documents\Git\ARCADIA-Studio\.local\scenario-layout-ytr83r-20260913'
Push-Location -LiteralPath $taskWorkspace
try {
. 'C:\Users\User\Documents\Git\ARCADIA-Studio\.local\toolchain\env.ps1'
$env:CARGO_TARGET_DIR='C:\Users\User\Documents\Git\ARCADIA-Studio\.local\scenario-core-target-20260913'
$taskArgs=switch($Stage){
 'list' { @('test','-p','oa-core','--lib','--locked','--offline','--','--list') }
 'focused' { @('test','-p','oa-core','--lib','--locked','--offline','--','scenario_layout','--nocapture','--test-threads=1') }
 'all' { @('test','-p','oa-core','--all-targets','--locked','--offline') }
 'clippy' { @('clippy','-p','oa-core','--all-targets','--locked','--offline','--','-D','warnings') }
}
$taskLog=Join-Path $PSScriptRoot ($Stage+'.log')
$taskReceipt=Join-Path $PSScriptRoot ($Stage+'-receipt.json')
if((Test-Path -LiteralPath $taskLog) -or (Test-Path -LiteralPath $taskReceipt)){throw 'Preserve previous gate; choose a new output directory'}
$taskBase=git rev-parse HEAD
$taskStart=[DateTime]::UtcNow.ToString('o')
& cargo @taskArgs 2>&1 | Tee-Object -FilePath $taskLog
$taskExit=$LASTEXITCODE
$taskText=Get-Content -Raw -LiteralPath $taskLog
$taskSelection=$true
$taskCount=$null
if($Stage -eq 'list'){
 $taskCount=[regex]::Matches($taskText,'(?m)^[^\r\n]*scenario_layout[^\r\n]+: test\r?$').Count
 $taskSelection=$taskCount -eq 26
}
if($Stage -eq 'focused'){ $taskSelection=$taskText -match 'test result: ok\. 26 passed; 0 failed; 0 ignored;' }
[ordered]@{command=('cargo '+($taskArgs -join ' '));base=$taskBase;workspace=$taskWorkspace;target=$env:CARGO_TARGET_DIR;startUtc=$taskStart;endUtc=[DateTime]::UtcNow.ToString('o');cargoExitCode=$taskExit;selectedTests=$taskCount;selectionValid=$taskSelection}|ConvertTo-Json|Set-Content -LiteralPath $taskReceipt -Encoding utf8
if($taskExit -ne 0){exit $taskExit}
if(-not $taskSelection){throw 'Test membership/result does not match 26 new model/reference/source lifecycle cases'}
}finally{Pop-Location}