feat: add autostart scripts and fix port configuration in launchers

Windows: install-autostart.bat (Startup folder shortcut),
uninstall-autostart.bat. Linux: install-service.sh (systemd unit),
uninstall-service.sh.

Both launchers now use python -m wled_controller.main so port is
read from config/env instead of being hardcoded to 8080.

build-dist.sh

@@ -101,22 +101,112 @@ SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 export PYTHONPATH="$SCRIPT_DIR/app/src"
 export WLED_CONFIG_PATH="$SCRIPT_DIR/app/config/default_config.yaml"
 
+# Read port from env var or use default
+PORT="${WLED_SERVER__PORT:-8080}"
+
 mkdir -p "$SCRIPT_DIR/data" "$SCRIPT_DIR/logs"
 
 echo ""
 echo "  ============================================="
 echo "   LedGrab vVERSION_PLACEHOLDER"
-echo "   Open http://localhost:8080 in your browser"
+echo "   Open http://localhost:$PORT in your browser"
 echo "  ============================================="
 echo ""
 
 source "$SCRIPT_DIR/venv/bin/activate"
-exec python -m uvicorn wled_controller.main:app --host 0.0.0.0 --port 8080
+exec python -m wled_controller.main
 LAUNCHER
 
 sed -i "s/VERSION_PLACEHOLDER/${VERSION_CLEAN}/" "$DIST_DIR/run.sh"
 chmod +x "$DIST_DIR/run.sh"
 
+# ── Create autostart scripts ─────────────────────────────────
+
+cat > "$DIST_DIR/install-service.sh" << 'SERVICE_INSTALL'
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SERVICE_NAME="ledgrab"
+SERVICE_FILE="/etc/systemd/system/${SERVICE_NAME}.service"
+RUN_SCRIPT="$SCRIPT_DIR/run.sh"
+CURRENT_USER="$(whoami)"
+
+if [ "$EUID" -ne 0 ] && [ "$CURRENT_USER" != "root" ]; then
+    echo "This script requires root privileges. Re-running with sudo..."
+    exec sudo "$0" "$@"
+fi
+
+# Resolve the actual user (not root) when run via sudo
+ACTUAL_USER="${SUDO_USER:-$CURRENT_USER}"
+ACTUAL_HOME=$(eval echo "~$ACTUAL_USER")
+
+echo "Installing LedGrab systemd service..."
+
+cat > "$SERVICE_FILE" << EOF
+[Unit]
+Description=LedGrab ambient lighting server
+After=network.target
+
+[Service]
+Type=simple
+User=$ACTUAL_USER
+WorkingDirectory=$SCRIPT_DIR
+ExecStart=$RUN_SCRIPT
+Restart=on-failure
+RestartSec=5
+Environment=HOME=$ACTUAL_HOME
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+systemctl daemon-reload
+systemctl enable "$SERVICE_NAME"
+systemctl start "$SERVICE_NAME"
+
+echo ""
+echo "  [OK] LedGrab service installed and started."
+echo ""
+echo "  Commands:"
+echo "    sudo systemctl status $SERVICE_NAME    # Check status"
+echo "    sudo systemctl stop $SERVICE_NAME      # Stop"
+echo "    sudo systemctl restart $SERVICE_NAME   # Restart"
+echo "    sudo journalctl -u $SERVICE_NAME -f    # View logs"
+echo ""
+echo "  To remove: run ./uninstall-service.sh"
+SERVICE_INSTALL
+chmod +x "$DIST_DIR/install-service.sh"
+
+cat > "$DIST_DIR/uninstall-service.sh" << 'SERVICE_UNINSTALL'
+#!/usr/bin/env bash
+set -euo pipefail
+
+SERVICE_NAME="ledgrab"
+SERVICE_FILE="/etc/systemd/system/${SERVICE_NAME}.service"
+
+if [ "$EUID" -ne 0 ] && [ "$(whoami)" != "root" ]; then
+    echo "This script requires root privileges. Re-running with sudo..."
+    exec sudo "$0" "$@"
+fi
+
+if [ ! -f "$SERVICE_FILE" ]; then
+    echo "LedGrab service is not installed."
+    exit 0
+fi
+
+echo "Removing LedGrab systemd service..."
+
+systemctl stop "$SERVICE_NAME" 2>/dev/null || true
+systemctl disable "$SERVICE_NAME" 2>/dev/null || true
+rm -f "$SERVICE_FILE"
+systemctl daemon-reload
+
+echo ""
+echo "  [OK] LedGrab service removed."
+SERVICE_UNINSTALL
+chmod +x "$DIST_DIR/uninstall-service.sh"
+
 # ── Create tarball ───────────────────────────────────────────
 
 echo "[7/7] Creating $TAR_NAME..."