Add new deploy script

Co-authored-by: Copilot <copilot@github.com>

scripts/deploy.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+set -e
+
+APP_NAME="runosaari"
+APP_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+echo "Deploying $APP_NAME from $APP_DIR..."
+
+cd "$APP_DIR"
+
+echo "Pulling latest changes..."
+sudo -E git pull
+
+echo "Installing dependencies..."
+sudo npm ci --omit=dev
+
+echo "Building application..."
+sudo npm run build
+
+echo "Starting/reloading with pm2..."
+if sudo pm2 describe "$APP_NAME" > /dev/null 2>&1; then
+  sudo pm2 reload "$APP_NAME" --update-env
+else
+  sudo pm2 start npm --name "$APP_NAME" --env PORT=8089 -- start -- -p 8089
+fi
+
+sudo pm2 save
+
+echo "Deployment complete."