$ErrorActionPreference='Stop'
$plRoot=(Resolve-Path (Join-Path $PSScriptRoot '..')).Path
$plCache=(Resolve-Path (Join-Path $plRoot 'pl03_family/results/poster_raw_frame_cache')).Path
$plLocal=Get-Content (Join-Path $plRoot 'ops/poster_render_cache_manifest.json') -Raw | ConvertFrom-Json
$plRemote=Get-Content (Join-Path $plRoot 'ops/remote_cache_inventory.json') -Raw | ConvertFrom-Json
if($plRemote.root -ne '<QIZHI_ROOT>/codex_remote_ops/phaselatch_tea_20261004/pl03_render_20261009/src/raw_cache'){throw 'Unexpected remote cache root'}
$plByPath=@{}
foreach($plEntry in $plRemote.files){$plByPath[$plEntry.path]=$plEntry}
$plCandidates=@()
foreach($plEntry in $plLocal.files){
 if(-not $plByPath.ContainsKey($plEntry.path)){continue}
 $plCopy=$plByPath[$plEntry.path]
 if($plCopy.bytes -ne $plEntry.bytes -or $plCopy.sha256 -ne $plEntry.sha256){continue}
 $plPath=[IO.Path]::GetFullPath((Join-Path $plCache $plEntry.path))
 if(-not $plPath.StartsWith($plCache+'\',[StringComparison]::OrdinalIgnoreCase) -or [IO.Path]::GetExtension($plPath) -ne '.png'){throw 'Cache path escapes verified directory'}
 if(-not (Test-Path -LiteralPath $plPath)){continue}
 if((Get-Item -LiteralPath $plPath).Length -ne $plEntry.bytes -or (Get-FileHash -LiteralPath $plPath -Algorithm SHA256).Hash.ToLower() -ne $plEntry.sha256){throw 'Local cache changed'}
 $plCandidates+=@{path=$plEntry.path;local_path=$plPath;bytes=$plEntry.bytes;sha256=$plEntry.sha256;remote_path=($plRemote.root+'/'+$plEntry.path)}
}
$plReceipt=Join-Path $plRoot 'ops/render_cache_remote_cleanup.json'
if(Test-Path -LiteralPath $plReceipt){throw 'Cleanup receipt exists; inspect before reusing'}
$plRecord=@{remote_inventory='ops/remote_cache_inventory.json';restore='Fetch each remote_path to local_path and verify recorded SHA256; raw cache only, original replay and final videos untouched.';files=$plCandidates;removed=$false}
$plRecord | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath $plReceipt -Encoding utf8
foreach($plEntry in $plCandidates){Remove-Item -LiteralPath $plEntry.local_path}
$plRecord.removed=$true
$plRecord.removed_bytes=($plCandidates | Measure-Object -Property bytes -Sum).Sum
$plRecord | ConvertTo-Json -Depth 5 | Set-Content -LiteralPath $plReceipt -Encoding utf8
Write-Output ('Removed {0} remotely verified cached frames; {1} bytes' -f $plCandidates.Count,$plRecord.removed_bytes)