Add Linux deployment scripts

- install.sh: Sets up /opt/kao with systemd service
- uninstall.sh: Clean removal
- Hide message when optimal (only show when something to report)

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

index.html

@@ -220,9 +220,9 @@
             emoteEl.style.color = data.color;
             messageEl.style.color = data.color;
 
-            // Show event message if available, otherwise show state
+            // Only show message when there's something to report
             const topEvent = data.active_events && data.active_events[0];
-            messageEl.textContent = (topEvent && topEvent.message) || data.message;
+            messageEl.textContent = (topEvent && topEvent.message) || '';
 
             // Update animation class
             emoteEl.className = '';

install.sh

@@ -0,0 +1,79 @@
+#!/bin/bash
+# Kao Installation Script
+# Installs to /opt/kao and sets up systemd service
+
+set -e
+
+INSTALL_DIR="/opt/kao"
+SERVICE_FILE="/etc/systemd/system/kao.service"
+CURRENT_USER=$(whoami)
+
+echo "===================================="
+echo "  Kao Installer"
+echo "===================================="
+echo "Install directory: $INSTALL_DIR"
+echo "Running as user: $CURRENT_USER"
+echo ""
+
+# Check if running with appropriate permissions
+if [ ! -w "/opt" ]; then
+    echo "Error: Need write access to /opt"
+    echo "Run with: sudo $0"
+    exit 1
+fi
+
+# Create install directory
+echo "[1/5] Creating install directory..."
+mkdir -p "$INSTALL_DIR"
+cp -r aggregator.py kao.py index.html config.json requirements.txt detectors "$INSTALL_DIR/"
+chown -R "$CURRENT_USER:$CURRENT_USER" "$INSTALL_DIR"
+
+# Create virtual environment
+echo "[2/5] Creating virtual environment..."
+cd "$INSTALL_DIR"
+python3 -m venv venv
+./venv/bin/pip install --upgrade pip -q
+./venv/bin/pip install -r requirements.txt -q
+
+# Create systemd service
+echo "[3/5] Creating systemd service..."
+cat > "$SERVICE_FILE" << EOF
+[Unit]
+Description=Kao - System Status Monitor
+After=network.target
+
+[Service]
+Type=simple
+User=$CURRENT_USER
+WorkingDirectory=$INSTALL_DIR
+ExecStart=$INSTALL_DIR/venv/bin/python $INSTALL_DIR/kao.py
+Restart=always
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+# Reload systemd and enable service
+echo "[4/5] Enabling service..."
+systemctl daemon-reload
+systemctl enable kao.service
+
+# Start service
+echo "[5/5] Starting Kao..."
+systemctl start kao.service
+
+echo ""
+echo "===================================="
+echo "  Installation complete!"
+echo "===================================="
+echo ""
+echo "Kao is now running at http://$(hostname -I | awk '{print $1}'):5000"
+echo ""
+echo "Commands:"
+echo "  sudo systemctl status kao    # Check status"
+echo "  sudo systemctl restart kao   # Restart"
+echo "  sudo systemctl stop kao      # Stop"
+echo "  sudo journalctl -u kao -f    # View logs"
+echo ""
+echo "Config file: $INSTALL_DIR/config.json"

uninstall.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Kao Uninstall Script
+
+set -e
+
+INSTALL_DIR="/opt/kao"
+SERVICE_FILE="/etc/systemd/system/kao.service"
+
+echo "===================================="
+echo "  Kao Uninstaller"
+echo "===================================="
+
+# Check permissions
+if [ ! -w "/opt" ]; then
+    echo "Error: Need write access"
+    echo "Run with: sudo $0"
+    exit 1
+fi
+
+# Stop and disable service
+echo "[1/3] Stopping service..."
+systemctl stop kao.service 2>/dev/null || true
+systemctl disable kao.service 2>/dev/null || true
+
+# Remove service file
+echo "[2/3] Removing systemd service..."
+rm -f "$SERVICE_FILE"
+systemctl daemon-reload
+
+# Remove install directory
+echo "[3/3] Removing files..."
+rm -rf "$INSTALL_DIR"
+
+echo ""
+echo "Kao has been uninstalled."