Initial commit: Packer + QEMU/KVM Windows 11 minimal VM

Fully unattended Windows 11 Pro build using Autounattend.xml, swtpm
for TPM 2.0 emulation, and VirtIO drivers. Five PowerShell provisioners
strip bloatware, telemetry, unused services, and apply performance tuning
for a resource-constrained host. Output is a compressed QCOW2 image.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/05-cleanup.ps1

@@ -0,0 +1,31 @@
+#Requires -RunAsAdministrator
+
+# Windows Update cache
+Stop-Service wuauserv -Force -ErrorAction SilentlyContinue
+Remove-Item "C:\Windows\SoftwareDistribution\Download\*" -Recurse -Force -ErrorAction SilentlyContinue
+Start-Service wuauserv -ErrorAction SilentlyContinue
+
+# Temp folders
+Remove-Item "$env:TEMP\*"           -Recurse -Force -ErrorAction SilentlyContinue
+Remove-Item "C:\Windows\Temp\*"     -Recurse -Force -ErrorAction SilentlyContinue
+
+# Windows Error Reporting archives
+Remove-Item "C:\ProgramData\Microsoft\Windows\WER\*" -Recurse -Force -ErrorAction SilentlyContinue
+Remove-Item "C:\Windows\Minidump\*"  -Force -ErrorAction SilentlyContinue
+Remove-Item "C:\Windows\MEMORY.DMP"  -Force -ErrorAction SilentlyContinue
+
+# Prefetch (small, but consistent)
+Remove-Item "C:\Windows\Prefetch\*" -Force -ErrorAction SilentlyContinue
+
+# Event logs
+Get-EventLog -LogName * -ErrorAction SilentlyContinue | ForEach-Object {
+    Clear-EventLog -LogName $_.Log -ErrorAction SilentlyContinue
+}
+
+# DISM: remove superseded Windows component store entries
+DISM /Online /Cleanup-Image /StartComponentCleanup /ResetBase
+
+# Compact OS: reduces on-disk footprint using XPRESS4K compression
+Compact.exe /CompactOS:Always
+
+Write-Output "Cleanup complete."