Align Android Argus publication with SSH contract

Android/scripts/prepare-argus-publication.ps1

@@ -314,6 +314,8 @@ if (-not (Test-Path $stageDirectory)) {
 $stagedApkName = "{0}-{1}.apk" -f $Slug, $versionCode
 $stagedApkPath = Join-Path $stageDirectory $stagedApkName
 Copy-Item $releaseApkPath $stagedApkPath -Force
+$stagedApkSize = (Get-Item -LiteralPath $stagedApkPath).Length
+$stagedApkSha256 = (Get-FileHash -Algorithm SHA256 -LiteralPath $stagedApkPath).Hash.ToLowerInvariant()
 
 $metadata = [ordered]@{
     packagePath = $stagedApkPath
@@ -328,6 +330,10 @@ $metadata = [ordered]@{
     notes = if ($Notes) { $Notes } else { $null }
     repositoryUrl = if ($RepositoryUrl) { $RepositoryUrl } else { $null }
     homepageUrl = if ($HomepageUrl) { $HomepageUrl } else { $null }
+    packageSizeBytes = $stagedApkSize
+    sha256 = $stagedApkSha256
+    publicationMethod = 'ssh-sqlite-data-packages'
+    publicationInstruction = 'G:/Repos/Marketplace/ARGUS_PUBLICATION.md'
     git = $gitProvenance
     androidPackageName = $packageName
     androidVersionCode = [int]$versionCode