Add Claude Desktop extensions (.mcpb) for WordCraft and GridCraft.

Ship unsigned MCPB packages built from the ArtCraft Launcher CLIs, with install docs and skill 0.2.0 updates.

scripts/fetch-cli.ps1

@@ -0,0 +1,90 @@
+# Copies the ArtCraft-Launcher CLI into skills\<name>\extension\server\
+# and writes upstream.json plus LICENSES from the matching upstream tag.
+# No GitHub binary download. Requires WordCraft/GridCraft installed via ArtCraft Launcher.
+# Usage: scripts\fetch-cli.ps1 -Name <skill-name> [-CliPath <path>]
+param(
+    [Parameter(Mandatory = $true)][string]$Name,
+    [string]$CliPath
+)
+. (Join-Path $PSScriptRoot 'lib.ps1')
+
+$dir = Join-Path $SkillsDir $Name
+$ext = Join-Path $dir 'extension'
+if (-not (Test-Path (Join-Path $ext 'manifest.json'))) {
+    Write-Host "skills/$Name/extension/manifest.json fehlt."
+    exit 1
+}
+
+$defaults = @{
+    'wordcraft-mcp' = @{
+        ExeName  = 'wordcraft-cli.exe'
+        Default  = 'C:\Program Files\WordCraft\wordcraft-cli.exe'
+        Repo     = 'https://github.com/storytold/wordcraft'
+        RepoSlug = 'storytold/wordcraft'
+    }
+    'gridcraft-mcp' = @{
+        ExeName  = 'gridcraft-cli.exe'
+        Default  = 'C:\Program Files\GridCraft\gridcraft-cli.exe'
+        Repo     = 'https://github.com/storytold/gridcraft'
+        RepoSlug = 'storytold/gridcraft'
+    }
+}
+
+if (-not $defaults.ContainsKey($Name)) {
+    Write-Host "Kein CLI-Mapping fuer Skill '$Name'."
+    exit 1
+}
+$meta = $defaults[$Name]
+$src = if ($CliPath) { $CliPath } else { $meta.Default }
+if (-not (Test-Path -LiteralPath $src)) {
+    Write-Host "CLI fehlt: $src"
+    Write-Host "Bitte WordCraft/GridCraft ueber den ArtCraft-Launcher installieren, oder -CliPath angeben."
+    exit 1
+}
+
+$serverDir = Join-Path $ext 'server'
+New-Item -ItemType Directory -Force -Path $serverDir | Out-Null
+$dest = Join-Path $serverDir $meta.ExeName
+Copy-Item -LiteralPath $src -Destination $dest -Force
+
+$verOut = & $dest --version 2>&1 | Out-String
+if ($LASTEXITCODE -ne 0 -and $Name -eq 'gridcraft-mcp') {
+    $verOut = & $dest version 2>&1 | Out-String
+}
+$ver = ''
+if ($verOut -match '(\d+\.\d+\.\d+)') { $ver = $Matches[1] }
+if (-not $ver) {
+    Write-Host "Version der CLI nicht lesbar: $verOut"
+    exit 1
+}
+
+$hash = (Get-FileHash -LiteralPath $dest -Algorithm SHA256).Hash.ToLowerInvariant()
+$upstream = @{
+    source     = 'ArtCraft-Launcher'
+    path       = $src
+    exe        = $meta.ExeName
+    version    = $ver
+    sha256     = $hash
+    repository = $meta.Repo
+    tag        = "v$ver"
+} | ConvertTo-Json -Compress
+Write-Text (Join-Path $ext 'upstream.json') ($upstream + "`n")
+
+$licDir = Join-Path $ext 'LICENSES'
+New-Item -ItemType Directory -Force -Path $licDir | Out-Null
+$tag = "v$ver"
+foreach ($f in @('LICENSE-MIT', 'LICENSE-APACHE', 'NOTICE')) {
+    $url = "https://raw.githubusercontent.com/$($meta.RepoSlug)/$tag/$f"
+    $out = Join-Path $licDir $f
+    try {
+        Invoke-WebRequest -Uri $url -OutFile $out -UseBasicParsing
+    }
+    catch {
+        Write-Host "Lizenzdatei fehlgeschlagen: $url"
+        Write-Host $_
+        exit 1
+    }
+}
+
+Write-Host "OK  $Name  $ver  $hash"
+Write-Host "    $dest"