Add clean install cleanup script

scripts/clean_install.sh

@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Virtuality clean install helper.
+# Default mode preserves user data: VM disks, ISO files, uploaded disk images and backups.
+# Use --purge-data only when you intentionally want to remove Virtuality data directories too.
+
+PURGE_DATA=0
+YES=0
+
+for arg in "$@"; do
+  case "$arg" in
+    --purge-data) PURGE_DATA=1 ;;
+    --yes|-y) YES=1 ;;
+    *) echo "Unknown argument: $arg" >&2; exit 2 ;;
+  esac
+done
+
+if [[ "$EUID" -ne 0 ]]; then
+  exec sudo bash "$0" "$@"
+fi
+
+RED="\033[31m"
+GREEN="\033[32m"
+YELLOW="\033[33m"
+BOLD="\033[1m"
+RESET="\033[0m"
+
+say() { echo -e "${GREEN}✓${RESET} $*"; }
+warn() { echo -e "${YELLOW}!${RESET} $*"; }
+remove_path() {
+  local path="$1"
+  if [[ -e "$path" || -L "$path" ]]; then
+    rm -rf "$path"
+    say "removed: $path"
+  else
+    warn "not found: $path"
+  fi
+}
+
+cat <<EOF
+${BOLD}Virtuality clean install${RESET}
+
+Will remove:
+- /opt/virtuality/web
+- /opt/virtuality/venv
+- /etc/systemd/system/virtuality-web.service
+- /var/lib/virtuality/config
+- /var/lib/virtuality/update
+- /var/log/virtuality/update.log and install logs
+
+Will preserve by default:
+- /opt/virtuality/source
+- /var/lib/virtuality/iso
+- /var/lib/virtuality/images
+- /var/lib/virtuality/disk-images
+- /var/lib/virtuality/backups
+- existing libvirt VMs and storage pools
+EOF
+
+if [[ "$PURGE_DATA" -eq 1 ]]; then
+  cat <<EOF
+
+${RED}${BOLD}PURGE DATA MODE ENABLED${RESET}
+Will also remove:
+- /var/lib/virtuality/iso
+- /var/lib/virtuality/images
+- /var/lib/virtuality/disk-images
+- /var/lib/virtuality/backups
+- /var/lib/virtuality/network
+
+Existing libvirt VM definitions are not deleted automatically.
+EOF
+fi
+
+if [[ "$YES" -ne 1 ]]; then
+  echo
+  read -r -p "Continue? Type YES: " answer
+  if [[ "$answer" != "YES" ]]; then
+    echo "Cancelled."
+    exit 0
+  fi
+fi
+
+systemctl stop virtuality-web.service 2>/dev/null || true
+systemctl disable virtuality-web.service 2>/dev/null || true
+
+remove_path /etc/systemd/system/virtuality-web.service
+systemctl daemon-reload || true
+
+remove_path /opt/virtuality/web
+remove_path /opt/virtuality/venv
+remove_path /var/lib/virtuality/config
+remove_path /var/lib/virtuality/update
+remove_path /var/log/virtuality/update.log
+find /var/log/virtuality -maxdepth 1 -type f -name 'install_web_panel_*.log' -delete 2>/dev/null || true
+say "old installer logs removed"
+
+if [[ "$PURGE_DATA" -eq 1 ]]; then
+  remove_path /var/lib/virtuality/iso
+  remove_path /var/lib/virtuality/images
+  remove_path /var/lib/virtuality/disk-images
+  remove_path /var/lib/virtuality/backups
+  remove_path /var/lib/virtuality/network
+fi
+
+mkdir -p /opt/virtuality /var/log/virtuality /var/lib/virtuality
+say "base directories recreated"
+
+echo
+say "Clean install cleanup finished. Run: sudo bash scripts/install_web_panel.sh"