feat(testing): rewrite test infrastructure from libvirt to direct QEMU

Replace the never-fully-operational libvirt-based VM test infrastructure
with direct QEMU management and archangel ISO for fully automated,
unattended base VM creation.

Key changes:
- vm-utils.sh: complete rewrite — QEMU process mgmt via PID file,
  monitor socket for graceful shutdown, qemu-img snapshots, SSH
  port forwarding (localhost:2222)
- create-base-vm.sh: boots archangel ISO, SSHs in, runs unattended
  install via config file, verifies, creates clean-install snapshot
- run-test.sh: snapshot revert, git bundle transfer, detached archsetup
  execution with setsid, polling, validation, and report generation
- debug-vm.sh: CoW overlay disk, GTK display, auto-cleanup on close
- setup-testing-env.sh: reduced deps to qemu-full/sshpass/edk2-ovmf/socat
- cleanup-tests.sh: PID-based process management, orphan detection
- validation.sh: port-based SSH (backward compatible), fuzzel/foot for
  Hyprland, corrected package list paths
- network-diagnostics.sh: getent/curl instead of nslookup/ping (SLIRP)

New files:
- archsetup-test.conf: archangel config for base VM (btrfs, no encrypt)
- archsetup-vm.conf: archsetup config for unattended test execution
- assets/archangel.conf.example: reference archangel config

Deleted:
- finalize-base-vm.sh: merged into create-base-vm.sh
- archinstall-config.json: replaced by archangel .conf format

Tested: full end-to-end run — 51 validations passed, 0 failures.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/assets/archangel.conf.example b/assets/archangel.conf.example
new file mode 100644
index 0000000..dacf340
--- /dev/null
+++ b/assets/archangel.conf.example
@@ -0,0 +1,96 @@
+# archangel.conf - Unattended Installation Configuration
+#
+# Copy this file and edit values.
+# Usage: archangel --config-file /path/to/your-config.conf
+#
+# Required fields: HOSTNAME, TIMEZONE, DISKS, ROOT_PASSWORD
+# For ZFS: also need ZFS_PASSPHRASE or NO_ENCRYPT=yes
+# All other fields have sensible defaults.
+
+#############################
+# Filesystem Selection
+#############################
+
+# Filesystem type (optional, default: zfs)
+# Options: zfs, btrfs
+# Note: btrfs support coming soon
+FILESYSTEM=zfs
+
+#############################
+# System Configuration
+#############################
+
+# Hostname for the installed system (required)
+HOSTNAME=archangel
+
+# Timezone (required) - Use format: Region/City
+# Examples: America/Los_Angeles, Europe/London, Asia/Tokyo
+TIMEZONE=America/Los_Angeles
+
+# Locale (optional, default: en_US.UTF-8)
+LOCALE=en_US.UTF-8
+
+# Console keymap (optional, default: us)
+KEYMAP=us
+
+#############################
+# Disk Configuration
+#############################
+
+# Disks to use for installation (required)
+# Single disk: DISKS=/dev/vda
+# Multiple disks: DISKS=/dev/vda,/dev/vdb,/dev/vdc
+DISKS=/dev/vda
+
+# RAID level for multi-disk setups (optional)
+# Options: mirror, stripe, raidz1, raidz2, raidz3
+# Default: mirror (when multiple disks specified)
+# Leave empty for single disk
+RAID_LEVEL=
+
+#############################
+# Security
+#############################
+
+# ZFS encryption passphrase (required unless NO_ENCRYPT=yes)
+# This will be required at every boot to unlock the pool
+ZFS_PASSPHRASE=changeme
+
+# Skip ZFS encryption (optional, default: no)
+# Set to "yes" to create an unencrypted pool
+# Use cases:
+#   - VMs or test environments
+#   - Systems with hardware encryption (SED drives)
+#   - Data that doesn't require encryption
+# WARNING: Without encryption, anyone with physical access can read your data
+#NO_ENCRYPT=no
+
+# Root password (required)
+ROOT_PASSWORD=changeme
+
+#############################
+# Network Configuration
+#############################
+
+# Enable SSH with root login (optional, default: yes)
+# Set to "no" to disable SSH
+ENABLE_SSH=yes
+
+# WiFi configuration (optional)
+# Leave empty for ethernet-only or to skip WiFi setup
+WIFI_SSID=
+WIFI_PASSWORD=
+
+#############################
+# Advanced ZFS Options
+#############################
+
+# Pool name (optional, default: zroot)
+#POOL_NAME=zroot
+
+# Compression algorithm (optional, default: zstd)
+#COMPRESSION=zstd
+
+# Sector size shift (optional, default: 12 for 4K sectors)
+# Use 13 for 8K sector drives
+#ASHIFT=12