完成40%

tests/a02-asset-alpha-audit.ps1

@@ -24,4 +24,50 @@ if ($width -ne 940 -or $height -ne 1672) { throw 'A02 login-panel asset must rem
 if ([Math]::Abs($ratio - 0.5622) -gt 0.001) { throw 'A02 login-panel asset must retain its approved panel ratio.' }
 if (($corners | Where-Object { $_ -ne 255 }).Count -ne 0) { throw 'A02 login-panel asset must have opaque outer corners.' }
 
+$agreementAssets = @(
+  'static/assets/modules/auth/transparent/a02-agreement-unchecked.png',
+  'static/assets/modules/auth/transparent/a02-agreement-checked.png'
+)
+
+foreach ($agreementAssetRelativePath in $agreementAssets) {
+  $agreementAsset = Join-Path $root $agreementAssetRelativePath
+  if (-not (Test-Path -LiteralPath $agreementAsset)) {
+    throw "Missing A02 agreement asset: $agreementAssetRelativePath"
+  }
+
+  $agreementBitmap = [System.Drawing.Bitmap]::FromFile($agreementAsset)
+  try {
+    if ($agreementBitmap.Width -ne 96 -or $agreementBitmap.Height -ne 96) {
+      throw "A02 agreement asset must be 96 x 96px: $agreementAssetRelativePath"
+    }
+    if (-not [System.Drawing.Image]::IsAlphaPixelFormat($agreementBitmap.PixelFormat)) {
+      throw "A02 agreement asset must retain an alpha channel: $agreementAssetRelativePath"
+    }
+    $agreementCorners = @(
+      $agreementBitmap.GetPixel(0, 0).A,
+      $agreementBitmap.GetPixel(95, 0).A,
+      $agreementBitmap.GetPixel(0, 95).A,
+      $agreementBitmap.GetPixel(95, 95).A
+    )
+    if (($agreementCorners | Where-Object { $_ -ne 0 }).Count -ne 0) {
+      throw "A02 agreement asset must have transparent outer corners: $agreementAssetRelativePath"
+    }
+
+    $hasOpaquePixel = $false
+    for ($y = 0; $y -lt 96 -and -not $hasOpaquePixel; $y += 1) {
+      for ($x = 0; $x -lt 96; $x += 1) {
+        if ($agreementBitmap.GetPixel($x, $y).A -eq 255) {
+          $hasOpaquePixel = $true
+          break
+        }
+      }
+    }
+    if (-not $hasOpaquePixel) {
+      throw "A02 agreement asset must contain an opaque icon: $agreementAssetRelativePath"
+    }
+  } finally {
+    $agreementBitmap.Dispose()
+  }
+}
+
 Write-Output 'A02-ASSET-ALPHA-AUDIT PASS'