diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..114b654
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,513 @@
+#!/bin/bash
+# ============================================================
+# Nexus Autoparts POS — Automated Installer
+# Works on: Debian 12+, Ubuntu 22.04+, Raspberry Pi OS (64-bit)
+# Usage: curl -s https://raw.githubusercontent.com/.../install.sh | bash
+# ============================================================
+set -euo pipefail
+
+# ----- Colors & helpers -----
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+INSTALL_DIR="/opt/nexus-pos"
+SERVICE_NAME="nexus-pos"
+DB_USER="nexus"
+DB_PASS="nexus_autoparts_2026"
+DB_NAME="nexus_autoparts"
+POS_PORT=5001
+LOG_FILE="/var/log/nexus-pos-install.log"
+
+info()  { echo -e "${CYAN}[INFO]${NC}  $*"; }
+ok()    { echo -e "${GREEN}[OK]${NC}    $*"; }
+warn()  { echo -e "${YELLOW}[WARN]${NC}  $*"; }
+err()   { echo -e "${RED}[ERROR]${NC} $*"; }
+fatal() { err "$*"; exit 1; }
+
+banner() {
+    echo ""
+    echo -e "${BOLD}${CYAN}"
+    echo "  ========================================"
+    echo "   Nexus Autoparts POS — Installer v1.0"
+    echo "  ========================================"
+    echo -e "${NC}"
+}
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" >> "$LOG_FILE"; }
+
+cleanup_on_error() {
+    err "Installation failed. Check $LOG_FILE for details."
+    exit 1
+}
+trap cleanup_on_error ERR
+
+# ============================================================
+# 1. CHECK PREREQUISITES
+# ============================================================
+check_prerequisites() {
+    info "Checking prerequisites..."
+
+    # Must be Linux
+    if [[ "$(uname -s)" != "Linux" ]]; then
+        fatal "This installer only supports Linux (Debian/Ubuntu/Raspberry Pi OS)."
+    fi
+
+    # Must be root
+    if [[ $EUID -ne 0 ]]; then
+        fatal "This script must be run as root. Use: sudo bash install.sh"
+    fi
+
+    # Check distro
+    if [[ -f /etc/os-release ]]; then
+        . /etc/os-release
+        info "Detected OS: ${PRETTY_NAME:-$ID}"
+        log "OS: ${PRETTY_NAME:-$ID}"
+    else
+        warn "Could not detect OS version. Proceeding anyway."
+    fi
+
+    # Detect Raspberry Pi
+    IS_RPI=false
+    if grep -qi "raspberry" /proc/cpuinfo 2>/dev/null || grep -qi "raspberry" /sys/firmware/devicetree/base/model 2>/dev/null; then
+        IS_RPI=true
+        info "Raspberry Pi detected."
+        log "Raspberry Pi detected"
+    fi
+
+    # Check architecture
+    ARCH=$(uname -m)
+    info "Architecture: $ARCH"
+    if [[ "$ARCH" != "x86_64" && "$ARCH" != "aarch64" && "$ARCH" != "armv7l" ]]; then
+        warn "Untested architecture: $ARCH. Proceeding with caution."
+    fi
+
+    # Check internet
+    if ! ping -c 1 -W 3 8.8.8.8 &>/dev/null; then
+        fatal "No internet connection detected. Please connect and retry."
+    fi
+
+    ok "Prerequisites check passed."
+}
+
+# ============================================================
+# 2. INSTALL SYSTEM PACKAGES
+# ============================================================
+install_packages() {
+    info "Updating package lists..."
+    apt-get update -qq >> "$LOG_FILE" 2>&1
+
+    PACKAGES=(
+        python3
+        python3-pip
+        python3-venv
+        postgresql
+        postgresql-client
+        git
+        nginx
+        libpq-dev
+        gcc
+        python3-dev
+        curl
+    )
+
+    # On Raspberry Pi, add some extras for lxml
+    if [[ "$IS_RPI" == true ]]; then
+        PACKAGES+=(libxml2-dev libxslt1-dev zlib1g-dev)
+    fi
+
+    info "Installing system packages: ${PACKAGES[*]}"
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq "${PACKAGES[@]}" >> "$LOG_FILE" 2>&1
+
+    ok "System packages installed."
+}
+
+# ============================================================
+# 3. CONFIGURE POSTGRESQL
+# ============================================================
+configure_postgresql() {
+    info "Configuring PostgreSQL..."
+
+    # Ensure PostgreSQL is running
+    systemctl enable postgresql >> "$LOG_FILE" 2>&1
+    systemctl start postgresql >> "$LOG_FILE" 2>&1
+
+    # Create user if not exists
+    if sudo -u postgres psql -tAc "SELECT 1 FROM pg_roles WHERE rolname='${DB_USER}'" | grep -q 1; then
+        info "PostgreSQL user '${DB_USER}' already exists."
+    else
+        sudo -u postgres psql -c "CREATE USER ${DB_USER} WITH PASSWORD '${DB_PASS}' CREATEDB;" >> "$LOG_FILE" 2>&1
+        ok "PostgreSQL user '${DB_USER}' created."
+    fi
+
+    # Create master database if not exists
+    if sudo -u postgres psql -tAc "SELECT 1 FROM pg_database WHERE datname='${DB_NAME}'" | grep -q 1; then
+        info "Database '${DB_NAME}' already exists."
+    else
+        sudo -u postgres psql -c "CREATE DATABASE ${DB_NAME} OWNER ${DB_USER};" >> "$LOG_FILE" 2>&1
+        ok "Database '${DB_NAME}' created."
+    fi
+
+    # Grant CREATEDB to user (idempotent)
+    sudo -u postgres psql -c "ALTER USER ${DB_USER} CREATEDB;" >> "$LOG_FILE" 2>&1
+
+    # Ensure pg_hba.conf allows md5 auth for local connections
+    PG_HBA=$(sudo -u postgres psql -tAc "SHOW hba_file" 2>/dev/null | head -1)
+    if [[ -n "$PG_HBA" ]] && ! grep -q "nexus" "$PG_HBA" 2>/dev/null; then
+        # Add md5 auth line for nexus user before the first local line
+        sed -i "/^# TYPE/a local   all   ${DB_USER}   md5" "$PG_HBA" 2>/dev/null || true
+        systemctl reload postgresql >> "$LOG_FILE" 2>&1
+    fi
+
+    ok "PostgreSQL configured."
+}
+
+# ============================================================
+# 4. CLONE REPOSITORY
+# ============================================================
+clone_repo() {
+    info "Setting up application in ${INSTALL_DIR}..."
+
+    if [[ -d "${INSTALL_DIR}" ]]; then
+        warn "${INSTALL_DIR} already exists."
+        echo -en "${YELLOW}  Overwrite? [y/N]: ${NC}"
+        read -r overwrite
+        if [[ "${overwrite,,}" == "y" ]]; then
+            rm -rf "${INSTALL_DIR}"
+        else
+            info "Keeping existing installation. Will update in place."
+        fi
+    fi
+
+    if [[ ! -d "${INSTALL_DIR}" ]]; then
+        # If running from the repo itself, copy it
+        SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+        if [[ -f "${SCRIPT_DIR}/pos/app.py" ]]; then
+            info "Copying from local source: ${SCRIPT_DIR}"
+            cp -a "${SCRIPT_DIR}" "${INSTALL_DIR}"
+        else
+            info "Cloning from GitHub..."
+            git clone https://github.com/consultoria-as/nexus-autoparts.git "${INSTALL_DIR}" >> "$LOG_FILE" 2>&1
+        fi
+    fi
+
+    ok "Application files ready at ${INSTALL_DIR}."
+}
+
+# ============================================================
+# 5. INSTALL PYTHON DEPENDENCIES
+# ============================================================
+install_python_deps() {
+    info "Creating Python virtual environment..."
+
+    python3 -m venv "${INSTALL_DIR}/venv" >> "$LOG_FILE" 2>&1
+
+    info "Installing Python dependencies..."
+    "${INSTALL_DIR}/venv/bin/pip" install --upgrade pip >> "$LOG_FILE" 2>&1
+    "${INSTALL_DIR}/venv/bin/pip" install -r "${INSTALL_DIR}/pos/requirements.txt" >> "$LOG_FILE" 2>&1
+    "${INSTALL_DIR}/venv/bin/pip" install gunicorn >> "$LOG_FILE" 2>&1
+
+    ok "Python dependencies installed."
+}
+
+# ============================================================
+# 6. INTERACTIVE SETUP
+# ============================================================
+interactive_setup() {
+    echo ""
+    echo -e "${BOLD}${CYAN}--- Business Setup ---${NC}"
+    echo ""
+
+    # Business name
+    echo -en "${BOLD}  Business name${NC} (e.g., Refaccionaria Lopez): "
+    read -r BUSINESS_NAME
+    if [[ -z "$BUSINESS_NAME" ]]; then
+        BUSINESS_NAME="Mi Refaccionaria"
+        warn "Using default: ${BUSINESS_NAME}"
+    fi
+
+    # RFC
+    echo -en "${BOLD}  RFC${NC} (optional, press Enter to skip): "
+    read -r BUSINESS_RFC
+    if [[ -z "$BUSINESS_RFC" ]]; then
+        BUSINESS_RFC=""
+        info "RFC skipped."
+    fi
+
+    # Owner name
+    echo -en "${BOLD}  Owner name${NC}: "
+    read -r OWNER_NAME
+    if [[ -z "$OWNER_NAME" ]]; then
+        OWNER_NAME="Administrador"
+        warn "Using default: ${OWNER_NAME}"
+    fi
+
+    # Owner PIN
+    while true; do
+        echo -en "${BOLD}  Owner PIN${NC} (4 digits): "
+        read -rs OWNER_PIN
+        echo ""
+        if [[ "$OWNER_PIN" =~ ^[0-9]{4}$ ]]; then
+            break
+        else
+            warn "PIN must be exactly 4 digits. Try again."
+        fi
+    done
+
+    # Domain/IP
+    DEFAULT_IP=$(hostname -I 2>/dev/null | awk '{print $1}')
+    echo -en "${BOLD}  Domain or IP${NC} for access [${DEFAULT_IP:-localhost}]: "
+    read -r ACCESS_HOST
+    if [[ -z "$ACCESS_HOST" ]]; then
+        ACCESS_HOST="${DEFAULT_IP:-localhost}"
+    fi
+
+    echo ""
+    echo -e "${BOLD}  Summary:${NC}"
+    echo "    Business:  ${BUSINESS_NAME}"
+    echo "    RFC:       ${BUSINESS_RFC:-N/A}"
+    echo "    Owner:     ${OWNER_NAME}"
+    echo "    PIN:       ****"
+    echo "    Access:    http://${ACCESS_HOST}"
+    echo ""
+    echo -en "${BOLD}  Proceed? [Y/n]: ${NC}"
+    read -r confirm
+    if [[ "${confirm,,}" == "n" ]]; then
+        fatal "Installation cancelled by user."
+    fi
+}
+
+# ============================================================
+# 7. PROVISION TENANT
+# ============================================================
+provision_tenant() {
+    info "Provisioning tenant database..."
+
+    cd "${INSTALL_DIR}/pos"
+
+    # Build a small Python script to avoid quoting issues in bash
+    cat > /tmp/_nexus_provision.py << PYEOF
+import sys, os
+sys.path.insert(0, '${INSTALL_DIR}/pos')
+os.chdir('${INSTALL_DIR}/pos')
+from services.tenant_manager import provision_tenant
+
+rfc_val = os.environ.get('NX_RFC') or None
+result = provision_tenant(
+    name=os.environ['NX_BUSINESS'],
+    rfc=rfc_val,
+    owner_name=os.environ['NX_OWNER'],
+    owner_pin=os.environ['NX_PIN']
+)
+print(f"Tenant created: id={result['tenant_id']}, db={result['db_name']}")
+PYEOF
+
+    NX_BUSINESS="$BUSINESS_NAME" \
+    NX_RFC="$BUSINESS_RFC" \
+    NX_OWNER="$OWNER_NAME" \
+    NX_PIN="$OWNER_PIN" \
+    "${INSTALL_DIR}/venv/bin/python3" /tmp/_nexus_provision.py >> "$LOG_FILE" 2>&1
+
+    rm -f /tmp/_nexus_provision.py
+
+    ok "Tenant '${BUSINESS_NAME}' provisioned."
+}
+
+# ============================================================
+# 8. APPLY MIGRATIONS (v1.1)
+# ============================================================
+apply_migrations() {
+    info "Applying database migrations..."
+
+    cd "${INSTALL_DIR}/pos"
+
+    "${INSTALL_DIR}/venv/bin/python3" -c "
+import sys
+sys.path.insert(0, '${INSTALL_DIR}/pos')
+from migrations.runner import run_migrations
+run_migrations()
+" >> "$LOG_FILE" 2>&1
+
+    ok "Migrations applied."
+}
+
+# ============================================================
+# 9. CREATE SYSTEMD SERVICE
+# ============================================================
+create_systemd_service() {
+    info "Creating systemd service..."
+
+    cat > /etc/systemd/system/${SERVICE_NAME}.service << SERVICEEOF
+[Unit]
+Description=Nexus Autoparts POS
+After=network.target postgresql.service
+Requires=postgresql.service
+
+[Service]
+Type=simple
+User=www-data
+Group=www-data
+WorkingDirectory=${INSTALL_DIR}/pos
+Environment=PATH=${INSTALL_DIR}/venv/bin:/usr/bin:/bin
+Environment=MASTER_DB_URL=postgresql://${DB_USER}:${DB_PASS}@localhost/${DB_NAME}
+Environment=TENANT_DB_URL_TEMPLATE=postgresql://${DB_USER}:${DB_PASS}@localhost/{db_name}
+ExecStart=${INSTALL_DIR}/venv/bin/gunicorn --bind 127.0.0.1:${POS_PORT} --workers 3 --timeout 120 "app:create_app()"
+Restart=always
+RestartSec=5
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target
+SERVICEEOF
+
+    # Set ownership
+    chown -R www-data:www-data "${INSTALL_DIR}"
+
+    systemctl daemon-reload >> "$LOG_FILE" 2>&1
+
+    ok "Systemd service created: ${SERVICE_NAME}.service"
+}
+
+# ============================================================
+# 10. CONFIGURE NGINX
+# ============================================================
+configure_nginx() {
+    info "Configuring nginx reverse proxy..."
+
+    # Remove default site
+    rm -f /etc/nginx/sites-enabled/default 2>/dev/null || true
+
+    cat > /etc/nginx/sites-available/nexus-pos << NGINXEOF
+server {
+    listen 80;
+    server_name ${ACCESS_HOST};
+
+    client_max_body_size 20M;
+
+    # POS application
+    location /pos/ {
+        proxy_pass http://127.0.0.1:${POS_PORT}/pos/;
+        proxy_set_header Host \$host;
+        proxy_set_header X-Real-IP \$remote_addr;
+        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto \$scheme;
+        proxy_read_timeout 300s;
+    }
+
+    # API endpoints
+    location /api/ {
+        proxy_pass http://127.0.0.1:${POS_PORT}/api/;
+        proxy_set_header Host \$host;
+        proxy_set_header X-Real-IP \$remote_addr;
+        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto \$scheme;
+    }
+
+    # Redirect root to POS login
+    location = / {
+        return 302 /pos/login;
+    }
+
+    # Health check
+    location /health {
+        proxy_pass http://127.0.0.1:${POS_PORT}/pos/health;
+    }
+}
+NGINXEOF
+
+    ln -sf /etc/nginx/sites-available/nexus-pos /etc/nginx/sites-enabled/nexus-pos
+
+    # Test nginx config
+    if nginx -t >> "$LOG_FILE" 2>&1; then
+        ok "Nginx configuration valid."
+    else
+        err "Nginx configuration test failed. Check $LOG_FILE."
+        return 1
+    fi
+}
+
+# ============================================================
+# 11. START SERVICES
+# ============================================================
+start_services() {
+    info "Starting services..."
+
+    systemctl enable nginx >> "$LOG_FILE" 2>&1
+    systemctl restart nginx >> "$LOG_FILE" 2>&1
+    ok "Nginx started."
+
+    systemctl enable "${SERVICE_NAME}" >> "$LOG_FILE" 2>&1
+    systemctl start "${SERVICE_NAME}" >> "$LOG_FILE" 2>&1
+    ok "Nexus POS service started."
+
+    # Wait a moment and verify
+    sleep 2
+    if systemctl is-active --quiet "${SERVICE_NAME}"; then
+        ok "Service is running."
+    else
+        warn "Service may not have started correctly. Check: journalctl -u ${SERVICE_NAME}"
+    fi
+}
+
+# ============================================================
+# 12. PRINT SUCCESS
+# ============================================================
+print_success() {
+    echo ""
+    echo -e "${BOLD}${GREEN}"
+    echo "  ========================================"
+    echo "   Installation Complete!"
+    echo "  ========================================"
+    echo -e "${NC}"
+    echo ""
+    echo -e "  ${BOLD}Access URL:${NC}    http://${ACCESS_HOST}/pos/login"
+    echo -e "  ${BOLD}Business:${NC}      ${BUSINESS_NAME}"
+    echo -e "  ${BOLD}Owner:${NC}         ${OWNER_NAME}"
+    echo -e "  ${BOLD}PIN:${NC}           ****  (the 4-digit PIN you entered)"
+    echo ""
+    echo -e "  ${BOLD}Service:${NC}       systemctl status ${SERVICE_NAME}"
+    echo -e "  ${BOLD}Logs:${NC}          journalctl -u ${SERVICE_NAME} -f"
+    echo -e "  ${BOLD}Install log:${NC}   ${LOG_FILE}"
+    echo ""
+    echo -e "  ${BOLD}Database:${NC}"
+    echo "    Host:      localhost"
+    echo "    User:      ${DB_USER}"
+    echo "    Master DB: ${DB_NAME}"
+    echo ""
+    echo -e "  ${BOLD}Files:${NC}         ${INSTALL_DIR}/"
+    echo ""
+    echo -e "  ${YELLOW}To uninstall:${NC}  sudo bash ${INSTALL_DIR}/uninstall.sh"
+    echo ""
+}
+
+# ============================================================
+# MAIN
+# ============================================================
+main() {
+    banner
+
+    # Init log
+    mkdir -p "$(dirname "$LOG_FILE")"
+    echo "=== Nexus POS Install started at $(date) ===" > "$LOG_FILE"
+
+    check_prerequisites
+    install_packages
+    configure_postgresql
+    clone_repo
+    install_python_deps
+    interactive_setup
+    provision_tenant
+    apply_migrations
+    create_systemd_service
+    configure_nginx
+    start_services
+    print_success
+
+    log "Installation completed successfully."
+}
+
+main "$@"
diff --git a/uninstall.sh b/uninstall.sh
new file mode 100755
index 0000000..779eb74
--- /dev/null
+++ b/uninstall.sh
@@ -0,0 +1,190 @@
+#!/bin/bash
+# ============================================================
+# Nexus Autoparts POS — Uninstaller
+# Cleanly removes all Nexus POS components
+# Usage: sudo bash /opt/nexus-pos/uninstall.sh
+# ============================================================
+set -uo pipefail
+
+# ----- Colors & helpers -----
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+INSTALL_DIR="/opt/nexus-pos"
+SERVICE_NAME="nexus-pos"
+DB_USER="nexus"
+DB_NAME="nexus_autoparts"
+
+info()  { echo -e "${CYAN}[INFO]${NC}  $*"; }
+ok()    { echo -e "${GREEN}[OK]${NC}    $*"; }
+warn()  { echo -e "${YELLOW}[WARN]${NC}  $*"; }
+err()   { echo -e "${RED}[ERROR]${NC} $*"; }
+
+# Must be root
+if [[ $EUID -ne 0 ]]; then
+    err "This script must be run as root. Use: sudo bash uninstall.sh"
+    exit 1
+fi
+
+echo ""
+echo -e "${BOLD}${RED}"
+echo "  ========================================"
+echo "   Nexus Autoparts POS — Uninstaller"
+echo "  ========================================"
+echo -e "${NC}"
+echo ""
+echo -e "  ${YELLOW}WARNING: This will remove:${NC}"
+echo "    - Nexus POS systemd service"
+echo "    - Nginx site configuration"
+echo "    - Application files at ${INSTALL_DIR}"
+echo ""
+echo -e "  ${BOLD}Database removal is optional (asked separately).${NC}"
+echo ""
+echo -en "  ${BOLD}${RED}Continue with uninstall? [y/N]: ${NC}"
+read -r confirm
+if [[ "${confirm,,}" != "y" ]]; then
+    info "Uninstall cancelled."
+    exit 0
+fi
+
+# ============================================================
+# 1. STOP AND REMOVE SYSTEMD SERVICE
+# ============================================================
+echo ""
+info "Stopping ${SERVICE_NAME} service..."
+if systemctl is-active --quiet "${SERVICE_NAME}" 2>/dev/null; then
+    systemctl stop "${SERVICE_NAME}" 2>/dev/null
+    ok "Service stopped."
+else
+    info "Service was not running."
+fi
+
+if systemctl is-enabled --quiet "${SERVICE_NAME}" 2>/dev/null; then
+    systemctl disable "${SERVICE_NAME}" 2>/dev/null
+    ok "Service disabled."
+fi
+
+if [[ -f "/etc/systemd/system/${SERVICE_NAME}.service" ]]; then
+    rm -f "/etc/systemd/system/${SERVICE_NAME}.service"
+    systemctl daemon-reload 2>/dev/null
+    ok "Service file removed."
+fi
+
+# ============================================================
+# 2. REMOVE NGINX CONFIGURATION
+# ============================================================
+info "Removing nginx configuration..."
+if [[ -f /etc/nginx/sites-enabled/nexus-pos ]]; then
+    rm -f /etc/nginx/sites-enabled/nexus-pos
+fi
+if [[ -f /etc/nginx/sites-available/nexus-pos ]]; then
+    rm -f /etc/nginx/sites-available/nexus-pos
+fi
+if command -v nginx &>/dev/null; then
+    # Restore default site if it exists
+    if [[ -f /etc/nginx/sites-available/default ]]; then
+        ln -sf /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default 2>/dev/null || true
+    fi
+    nginx -t &>/dev/null && systemctl reload nginx 2>/dev/null
+    ok "Nginx configuration removed."
+fi
+
+# ============================================================
+# 3. REMOVE APPLICATION FILES
+# ============================================================
+info "Removing application files..."
+if [[ -d "${INSTALL_DIR}" ]]; then
+    rm -rf "${INSTALL_DIR}"
+    ok "Removed ${INSTALL_DIR}"
+else
+    info "${INSTALL_DIR} not found (already removed?)."
+fi
+
+# ============================================================
+# 4. DATABASE REMOVAL (OPTIONAL)
+# ============================================================
+echo ""
+echo -e "  ${BOLD}${YELLOW}Database removal${NC}"
+echo "  This will drop ALL tenant databases, the master database,"
+echo "  and the PostgreSQL user. All data will be permanently lost."
+echo ""
+echo -en "  ${BOLD}${RED}Remove databases and PostgreSQL user? [y/N]: ${NC}"
+read -r drop_db
+if [[ "${drop_db,,}" == "y" ]]; then
+    echo -en "  ${BOLD}${RED}Type 'DELETE' to confirm: ${NC}"
+    read -r final_confirm
+    if [[ "$final_confirm" == "DELETE" ]]; then
+        info "Dropping databases..."
+
+        # Get list of tenant databases
+        TENANT_DBS=$(sudo -u postgres psql -tAc "SELECT db_name FROM tenants" "${DB_NAME}" 2>/dev/null || echo "")
+        TEMPLATE_DB=$(sudo -u postgres psql -tAc "SELECT 1 FROM pg_database WHERE datname='tenant_template'" 2>/dev/null || echo "")
+
+        # Drop tenant databases
+        if [[ -n "$TENANT_DBS" ]]; then
+            while IFS= read -r tdb; do
+                if [[ -n "$tdb" ]]; then
+                    sudo -u postgres psql -c "DROP DATABASE IF EXISTS \"${tdb}\";" 2>/dev/null
+                    ok "Dropped tenant database: ${tdb}"
+                fi
+            done <<< "$TENANT_DBS"
+        fi
+
+        # Drop template database
+        if [[ -n "$TEMPLATE_DB" ]]; then
+            sudo -u postgres psql -c "DROP DATABASE IF EXISTS tenant_template;" 2>/dev/null
+            ok "Dropped template database."
+        fi
+
+        # Drop master database
+        sudo -u postgres psql -c "DROP DATABASE IF EXISTS ${DB_NAME};" 2>/dev/null
+        ok "Dropped master database: ${DB_NAME}"
+
+        # Drop user
+        sudo -u postgres psql -c "DROP USER IF EXISTS ${DB_USER};" 2>/dev/null
+        ok "Dropped PostgreSQL user: ${DB_USER}"
+    else
+        warn "Database removal cancelled (confirmation did not match)."
+    fi
+else
+    info "Databases preserved. You can remove them manually later."
+    echo "    sudo -u postgres psql -c \"DROP DATABASE ${DB_NAME};\""
+    echo "    sudo -u postgres psql -c \"DROP USER ${DB_USER};\""
+fi
+
+# ============================================================
+# 5. REMOVE LOG FILE
+# ============================================================
+if [[ -f /var/log/nexus-pos-install.log ]]; then
+    rm -f /var/log/nexus-pos-install.log
+    ok "Install log removed."
+fi
+
+# ============================================================
+# DONE
+# ============================================================
+echo ""
+echo -e "${BOLD}${GREEN}"
+echo "  ========================================"
+echo "   Uninstall Complete"
+echo "  ========================================"
+echo -e "${NC}"
+echo ""
+echo -e "  ${BOLD}Removed:${NC}"
+echo "    - Systemd service (${SERVICE_NAME})"
+echo "    - Nginx site configuration"
+echo "    - Application files (${INSTALL_DIR})"
+if [[ "${drop_db,,}" == "y" && "$final_confirm" == "DELETE" ]]; then
+    echo "    - All databases and PostgreSQL user"
+else
+    echo -e "    - Databases: ${YELLOW}NOT removed${NC} (kept by user request)"
+fi
+echo ""
+echo "  Note: System packages (python3, postgresql, nginx, git)"
+echo "  were NOT removed. Remove them manually if desired:"
+echo "    apt-get remove --purge postgresql nginx"
+echo ""