added install script and uninstall script

install.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -e
+
+REPO_URL="https://github.com/orus-dev/sentryx.git"
+INSTALL_DIR="$HOME/sentryx"  # expanded
+SERVICE_NAME="sentryx"
+SERVICE_FILE="/etc/systemd/system/$SERVICE_NAME.service"
+NODE_BIN="$(which node)"
+RUN_USER="$(whoami)"  # change if needed
+
+# Backup if exists
+if [ -d "$INSTALL_DIR" ]; then
+    echo "Sentryx already exists, backing up..."
+    rm -rf "$INSTALL_DIR-backup"
+    mv "$INSTALL_DIR" "$INSTALL_DIR-backup"
+fi
+
+# Clone as current user
+git clone "$REPO_URL" "$INSTALL_DIR"
+
+# Build as current user inside INSTALL_DIR
+cd $INSTALL_DIR
+npm install
+npm run build
+
+# Create systemd service file with absolute ExecStart path
+echo "Creating systemd service..."
+sudo tee "$SERVICE_FILE" > /dev/null <<EOF
+[Unit]
+Description=SentryX Server
+After=network.target
+
+[Service]
+Type=simple
+User=$RUN_USER
+WorkingDirectory=$INSTALL_DIR
+ExecStart=$NODE_BIN "$INSTALL_DIR/node_modules/.bin/next" start
+Restart=on-failure
+Environment=NODE_ENV=production
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+# Reload systemd and enable service
+sudo systemctl daemon-reload
+sudo systemctl enable --now "$SERVICE_NAME.service"
+
+echo "Done! Check service with: sudo systemctl status $SERVICE_NAME"