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>

.gitignore

@@ -0,0 +1,20 @@
+# Local build variables — contains ISO path and credentials
+variables.pkrvars.hcl
+
+# Build output
+output/
+
+# Downloaded ISOs (large binaries, not worth tracking)
+*.iso
+
+# swtpm state directories created by build.sh
+.swtpm*/
+
+# Packer plugin cache
+packer_cache/
+
+# Editor / OS noise
+.DS_Store
+Thumbs.db
+*.swp
+*~