diff --git a/cleanup-windows.ps1 b/cleanup-windows.ps1
new file mode 100644
index 0000000..7f339a0
--- /dev/null
+++ b/cleanup-windows.ps1
@@ -0,0 +1,160 @@
+# ════════════════════════════════════════════════════════════════
+#  ARIA — Windows / WSL2 / Docker Desktop VHDX Cleanup
+# ════════════════════════════════════════════════════════════════
+#
+#  Findet alle WSL2 + Docker Desktop ext4.vhdx Files unter
+#  C:\Users\<USER>\AppData\Local\... und kompaktiert sie via diskpart.
+#  Damit bekommst du Speicherplatz zurueck den du IN den Distros/
+#  Containern geloescht hast (z.B. nach `docker system prune`),
+#  der aber von der VHDX bisher nicht freigegeben wurde.
+#
+#  Nutzung (PowerShell als ADMIN):
+#    .\cleanup-windows.ps1 stefan
+#    .\cleanup-windows.ps1 -User stefan
+#    .\cleanup-windows.ps1 -User stefan -SkipPrune    # nur compacten
+#
+#  Was passiert:
+#    1. Erst (optional): docker system prune + builder prune in WSL2
+#    2. wsl --shutdown
+#    3. Alle gefundenen .vhdx Files mit diskpart compact vdisk shrinken
+#
+#  Hinweis: diskpart braucht KEINE Hyper-V Tools (anders als Optimize-VHD).
+# ════════════════════════════════════════════════════════════════
+
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory=$true, Position=0,
+               HelpMessage="Dein Windows-Benutzername (z.B. stefan)")]
+    [string]$User,
+
+    [Parameter(HelpMessage="Docker prune ueberspringen — nur compacten")]
+    [switch]$SkipPrune,
+
+    [Parameter(HelpMessage="Docker prune NUR machen, dann beenden")]
+    [switch]$PruneOnly
+)
+
+# Admin-Check
+$isAdmin = ([Security.Principal.WindowsPrincipal] `
+    [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(
+    [Security.Principal.WindowsBuiltInRole]::Administrator)
+if (-not $isAdmin) {
+    Write-Host "❌ Dieses Script muss als Administrator laufen." -ForegroundColor Red
+    Write-Host "   Rechtsklick auf PowerShell → 'Als Administrator ausfuehren'" -ForegroundColor Yellow
+    exit 1
+}
+
+$basePath = "C:\Users\$User\AppData\Local"
+if (-not (Test-Path $basePath)) {
+    Write-Host "❌ Pfad existiert nicht: $basePath" -ForegroundColor Red
+    Write-Host "   Pruefe den Benutzernamen." -ForegroundColor Yellow
+    exit 1
+}
+
+Write-Host "════════════════════════════════════════════════════════════" -ForegroundColor Cyan
+Write-Host "  ARIA Cleanup fuer User: $User" -ForegroundColor Cyan
+Write-Host "════════════════════════════════════════════════════════════" -ForegroundColor Cyan
+Write-Host ""
+
+# ── 1. Docker prune (in WSL2) ──────────────────────────────────
+if (-not $SkipPrune) {
+    Write-Host "[1/3] Docker Cleanup in WSL2..." -ForegroundColor Yellow
+    Write-Host "      docker system prune -a --volumes -f" -ForegroundColor Gray
+    Write-Host "      docker builder prune -a -f" -ForegroundColor Gray
+    Write-Host ""
+    try {
+        wsl -e bash -c "docker system prune -a --volumes -f && docker builder prune -a -f"
+        Write-Host "      ✅ fertig" -ForegroundColor Green
+    } catch {
+        Write-Host "      ⚠️  Docker prune fehlgeschlagen (vielleicht laeuft Docker Desktop nicht?)" -ForegroundColor Yellow
+        Write-Host "         $_" -ForegroundColor Gray
+    }
+    Write-Host ""
+    if ($PruneOnly) {
+        Write-Host "─PruneOnly gesetzt — fertig." -ForegroundColor Cyan
+        exit 0
+    }
+}
+
+# ── 2. WSL2 shutdown ──────────────────────────────────────────
+Write-Host "[2/3] WSL2 herunterfahren..." -ForegroundColor Yellow
+wsl --shutdown
+Start-Sleep -Seconds 3
+Write-Host "      ✅ fertig" -ForegroundColor Green
+Write-Host ""
+
+# ── 3. VHDX-Files finden + compacten ──────────────────────────
+Write-Host "[3/3] VHDX-Files suchen + compacten..." -ForegroundColor Yellow
+Write-Host ""
+
+$vhdxFiles = @()
+$vhdxFiles += Get-ChildItem -Path "$basePath\Docker" -Recurse -Filter "*.vhdx" -ErrorAction SilentlyContinue
+$vhdxFiles += Get-ChildItem -Path "$basePath\Packages" -Recurse -Filter "ext4.vhdx" -ErrorAction SilentlyContinue
+$vhdxFiles = $vhdxFiles | Sort-Object FullName -Unique
+
+if ($vhdxFiles.Count -eq 0) {
+    Write-Host "      Keine .vhdx Files gefunden." -ForegroundColor Yellow
+    exit 0
+}
+
+Write-Host "Gefundene Files (vorher):" -ForegroundColor Cyan
+foreach ($f in $vhdxFiles) {
+    $sizeGB = [math]::Round($f.Length / 1GB, 2)
+    Write-Host ("  {0,8} GB  {1}" -f $sizeGB, $f.FullName) -ForegroundColor Gray
+}
+Write-Host ""
+
+$totalBefore = ($vhdxFiles | Measure-Object Length -Sum).Sum
+
+foreach ($f in $vhdxFiles) {
+    Write-Host "→ Compact: $($f.FullName)" -ForegroundColor White
+    $sizeBefore = [math]::Round($f.Length / 1GB, 2)
+
+    # Temporaeres diskpart-Script schreiben
+    $tmp = [System.IO.Path]::GetTempFileName()
+    @"
+select vdisk file="$($f.FullName)"
+attach vdisk readonly
+compact vdisk
+detach vdisk
+exit
+"@ | Out-File -Encoding ASCII -FilePath $tmp
+
+    try {
+        $output = & diskpart /s $tmp 2>&1
+        # Datei neu lesen — Length ist gecacht
+        $newFile = Get-Item $f.FullName
+        $sizeAfter = [math]::Round($newFile.Length / 1GB, 2)
+        $saved = [math]::Round($sizeBefore - $sizeAfter, 2)
+        if ($saved -gt 0) {
+            Write-Host ("  ✅ {0} GB → {1} GB  (gespart: {2} GB)" -f $sizeBefore, $sizeAfter, $saved) -ForegroundColor Green
+        } else {
+            Write-Host ("  ─  {0} GB → {1} GB  (nichts zu holen — File war schon optimal)" -f $sizeBefore, $sizeAfter) -ForegroundColor DarkGray
+        }
+    } catch {
+        Write-Host "  ❌ Fehler: $_" -ForegroundColor Red
+        Write-Host "     diskpart-Output:" -ForegroundColor DarkGray
+        $output | ForEach-Object { Write-Host "     $_" -ForegroundColor DarkGray }
+    } finally {
+        Remove-Item $tmp -ErrorAction SilentlyContinue
+    }
+    Write-Host ""
+}
+
+# ── Zusammenfassung ─────────────────────────────────────────
+$vhdxFilesAfter = @()
+$vhdxFilesAfter += Get-ChildItem -Path "$basePath\Docker" -Recurse -Filter "*.vhdx" -ErrorAction SilentlyContinue
+$vhdxFilesAfter += Get-ChildItem -Path "$basePath\Packages" -Recurse -Filter "ext4.vhdx" -ErrorAction SilentlyContinue
+$vhdxFilesAfter = $vhdxFilesAfter | Sort-Object FullName -Unique
+$totalAfter = ($vhdxFilesAfter | Measure-Object Length -Sum).Sum
+
+$savedTotal = [math]::Round(($totalBefore - $totalAfter) / 1GB, 2)
+
+Write-Host "════════════════════════════════════════════════════════════" -ForegroundColor Cyan
+Write-Host ("  Gesamt: {0} GB → {1} GB  (gespart: {2} GB)" -f `
+    [math]::Round($totalBefore / 1GB, 2),
+    [math]::Round($totalAfter / 1GB, 2),
+    $savedTotal) -ForegroundColor Cyan
+Write-Host "════════════════════════════════════════════════════════════" -ForegroundColor Cyan
+Write-Host ""
+Write-Host "Fertig. Docker Desktop / WSL2 starten ja von alleine wieder beim naechsten Aufruf." -ForegroundColor Green