Migrate remaining legacy operator workflows

scripts/Test-LegacyCutCoverage.ps1

@@ -9,52 +9,58 @@ param(
 Set-StrictMode -Version Latest
 $ErrorActionPreference = 'Stop'
 
-if (-not [IO.Path]::IsPathRooted($CutRoot)) {
-    throw 'CutRoot must be an absolute path.'
+$modulePath = Join-Path $PSScriptRoot 'LegacyCutCoverage.psm1'
+$manifestPath = Join-Path $PSScriptRoot 'LegacyCutRequirements.json'
+Import-Module -Name $modulePath -Force
+
+if (-not (Test-Path -LiteralPath $manifestPath -PathType Leaf)) {
+    throw 'The closed legacy cut requirement manifest is missing.'
 }
 
-$root = [IO.Path]::GetFullPath($CutRoot)
-if (-not (Test-Path -LiteralPath $root -PathType Container)) {
-    throw 'CutRoot does not identify an existing directory.'
+$manifest = Get-Content -LiteralPath $manifestPath -Raw -Encoding UTF8 | ConvertFrom-Json
+if ($manifest.schemaVersion -ne 1 -or
+    $manifest.reachableBuilders -le 0 -or
+    @($manifest.activeAliases).Count -eq 0 -or
+    @($manifest.assets).Count -eq 0) {
+    throw 'The closed legacy cut requirement manifest is invalid.'
 }
 
-# Active MainForm aliases for the 34 reachable builders. s8086 intentionally has no alias.
-$aliases = @(
-    '5001', 'N5001', '5006', '5011', '5016', '50160',
-    '5023', '5024', '5025', '5026', '5029',
-    '8018', '8032', '5032', '5037',
-    '5074', '5076', '5077', '5078', '5079',
-    '5080', '5081', '5082', '5083', '5084', '5085',
-    '5086', '50860', '5087', '5088',
-    '6001', '6067', '8001', '8002', '8003',
-    '8035', '8061', '8040', '8046', '8051', '8056',
-    '8067', '5068', '5070', '5072'
-)
+$report = Test-LegacyCutCoverageState `
+    -CutRoot $CutRoot `
+    -Aliases @($manifest.activeAliases) `
+    -AssetRequirements @($manifest.assets) `
+    -ReachableBuilders $manifest.reachableBuilders
 
-$missing = [Collections.Generic.List[string]]::new()
-$unsafe = [Collections.Generic.List[string]]::new()
-foreach ($alias in $aliases) {
-    $path = Join-Path $root ($alias + '.t2s')
-    if (-not (Test-Path -LiteralPath $path -PathType Leaf)) {
-        $missing.Add($alias)
-        continue
-    }
-
-    $item = Get-Item -LiteralPath $path -Force
-    if (($item.Attributes -band [IO.FileAttributes]::ReparsePoint) -ne 0 -or
-        $item.Length -le 0) {
-        $unsafe.Add($alias)
-    }
+$failedAliases = @($report.AliasFindings | Where-Object Status -ne 'Present')
+$failedAssets = @($report.AssetFindings | Where-Object Status -ne 'Present')
+foreach ($finding in $failedAliases) {
+    Write-Warning ("CutAlias {0} ({1}) => {2}" -f
+        $finding.Alias,
+        $finding.RelativePath,
+        $finding.Status)
+}
+foreach ($finding in $failedAssets) {
+    Write-Warning ("BuilderAsset {0} {1} ({2}) => {3}" -f
+        $finding.Builder,
+        $finding.Kind,
+        $finding.RelativePath,
+        $finding.Status)
 }
 
-if ($missing.Count -ne 0 -or $unsafe.Count -ne 0) {
-    throw "Legacy cut coverage failed. Missing=$($missing.Count), Unsafe=$($unsafe.Count)."
-}
-
-[pscustomobject][ordered]@{
-    Status = 'Passed'
-    ReachableBuilders = 34
-    ActiveAliases = $aliases.Count
-    Missing = $missing.Count
-    Unsafe = $unsafe.Count
+$report
+if ($report.Status -ne 'Passed') {
+    $assetSummary = @($failedAssets | ForEach-Object {
+        "{0}|{1}|{2}|{3}" -f $_.Builder, $_.Kind, $_.RelativePath, $_.Status
+    }) -join '; '
+    $messageFormat = "Legacy cut coverage failed. Missing={0}, Unsafe={1}, " +
+        "MissingAssets={2}, UnsafeAssets={3}, RootEscapes={4}, " +
+        "ReparseAssets={5}. AssetFindings=[{6}]"
+    throw ($messageFormat -f
+        $report.Missing,
+        $report.Unsafe,
+        $report.MissingAssets,
+        $report.UnsafeAssets,
+        $report.RootEscapes,
+        $report.ReparseAssets,
+        $assetSummary)
 }