feat(image): integrate PoloX image editing workflows

Add WaveSpeed image editing and image tools plugins, canvas image editing workflows, layer selection, and Cloud Agent image tools with approval-safe transient references.

plugin-packages/package-selected.ps1

@@ -0,0 +1,34 @@
+$ErrorActionPreference = 'Stop'
+
+Add-Type -AssemblyName System.IO.Compression
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+
+$root = Split-Path -Parent $PSCommandPath
+$ids = if ($args.Count -gt 0) { $args } else { throw 'Pass one or more plugin directory names.' }
+
+foreach ($id in $ids) {
+  $source = Join-Path $root $id
+  $output = Join-Path $root ($id + '.yingce-plugin')
+  $temporary = Join-Path $root ('.' + $id + '.yingce-plugin.tmp')
+  if (-not (Test-Path -LiteralPath (Join-Path $source 'manifest.json'))) {
+    throw "Missing manifest.json for $id"
+  }
+  if (Test-Path -LiteralPath $temporary) { Remove-Item -LiteralPath $temporary -Force }
+
+  $archive = [System.IO.Compression.ZipFile]::Open($temporary, [System.IO.Compression.ZipArchiveMode]::Create)
+  try {
+    Get-ChildItem -LiteralPath $source -Recurse -File | Where-Object {
+      $_.Name -in @('manifest.json', 'README.md', 'LICENSE') -or
+      $_.FullName -match '\\(docs|assets|web|backend)\\'
+    } | ForEach-Object {
+      $entryName = $_.FullName.Substring($source.Length + 1).Replace('\', '/')
+      [System.IO.Compression.ZipFileExtensions]::CreateEntryFromFile(
+        $archive, $_.FullName, $entryName, [System.IO.Compression.CompressionLevel]::Optimal
+      ) | Out-Null
+    }
+  } finally {
+    $archive.Dispose()
+  }
+  Move-Item -LiteralPath $temporary -Destination $output -Force
+  Write-Output "$id -> $output"
+}