Add DB schema, agent script, vhost config, deploy cron

- db/schema.sql: full jarvis_db schema (15 tables)
- agent/jarvis-agent.py: production agent script
- config/vhost/: OpenLiteSpeed vhost configuration
- deploy/jarvis-agent.service: systemd unit
- deploy/cron-jarvis.txt: JARVIS cron entries
- .gitignore: exclude system dirs and logs

deploy/jarvis-agent.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=JARVIS Agent
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/python3 /usr/local/bin/jarvis-agent.py
+Restart=always
+RestartSec=30
+User=root
+
+[Install]
+WantedBy=multi-user.target