```

chore: remove obsolete files and add Solidity build artifacts to .gitignore

- Add ignore patterns for Solidity build artifacts (typechain-types, artifacts, cache)
- Remove unused exchange mock API server (api/exchange_mock_api.py)
- Remove obsolete client-web README placeholder
- Remove deprecated marketplace-ui HTML implementation
```

docs/operator/deployment/systemd_services.md

@@ -0,0 +1,129 @@
+# AITBC Systemd Services
+
+All AITBC services are now managed by systemd for automatic startup, monitoring, and logging.
+
+## Services Overview
+
+| Service | Port | Description | Status |
+|---------|------|-------------|--------|
+| `aitbc-coordinator-api` | 8000 | Main Coordinator API for blockchain operations | Active |
+| `aitbc-exchange-api` | 3003 | Exchange API for trading operations | Active |
+| `aitbc-exchange-frontend` | 3002 | Exchange web frontend | Active |
+| `aitbc-wallet` | 8001 | Wallet daemon service | Pending |
+| `aitbc-node` | 8545 | Blockchain node service | Pending |
+
+## Service Management
+
+### Check Status
+```bash
+/root/aitbc/scripts/manage_services.sh status
+```
+
+### Start All Services
+```bash
+/root/aitbc/scripts/manage_services.sh start
+```
+
+### Stop All Services
+```bash
+/root/aitbc/scripts/manage_services.sh stop
+```
+
+### Restart All Services
+```bash
+/root/aitbc/scripts/manage_services.sh restart
+```
+
+### View Logs
+```bash
+# View specific service logs
+/root/aitbc/scripts/manage_services.sh logs coordinator-api
+/root/aitbc/scripts/manage_services.sh logs exchange-api
+/root/aitbc/scripts/manage_services.sh logs exchange-frontend
+/root/aitbc/scripts/manage_services.sh logs wallet
+/root/aitbc/scripts/manage_services.sh logs node
+
+# Or use systemctl directly
+sudo journalctl -u aitbc-coordinator-api -f
+sudo journalctl -u aitbc-exchange-api -f
+sudo journalctl -u aitbc-exchange-frontend -f
+```
+
+### Enable/Disable Autostart
+```bash
+# Enable services to start on boot
+/root/aitbc/scripts/manage_services.sh enable
+
+# Disable services from starting on boot
+/root/aitbc/scripts/manage_services.sh disable
+```
+
+## Individual Service Control
+
+You can also control services individually using systemctl:
+
+```bash
+# Start a specific service
+sudo systemctl start aitbc-coordinator-api
+
+# Stop a specific service
+sudo systemctl stop aitbc-coordinator-api
+
+# Restart a specific service
+sudo systemctl restart aitbc-coordinator-api
+
+# Check if service is enabled
+sudo systemctl is-enabled aitbc-coordinator-api
+
+# Enable service on boot
+sudo systemctl enable aitbc-coordinator-api
+
+# Disable service on boot
+sudo systemctl disable aitbc-coordinator-api
+```
+
+## Service Files Location
+
+Service definition files are located at:
+- `/etc/systemd/system/aitbc-coordinator-api.service`
+- `/etc/systemd/system/aitbc-exchange-api.service`
+- `/etc/systemd/system/aitbc-exchange-frontend.service`
+- `/etc/systemd/system/aitbc-wallet.service`
+- `/etc/systemd/system/aitbc-node.service`
+
+## Troubleshooting
+
+### Service Not Starting
+1. Check the service status: `sudo systemctl status aitbc-service-name`
+2. View the logs: `sudo journalctl -u aitbc-service-name -n 50`
+3. Check if port is already in use: `netstat -tlnp | grep :port`
+
+### Service Keeps Restarting
+1. The service is configured to auto-restart on failure
+2. Check logs for the error causing failures
+3. Temporarily disable auto-restart for debugging: `sudo systemctl stop aitbc-service-name`
+
+### Manual Override
+If systemd services are not working, you can run services manually:
+```bash
+# Coordinator API
+cd /root/aitbc/apps/coordinator-api
+/root/aitbc/.venv/bin/python -m uvicorn src.app.main:app --host 0.0.0.0 --port 8000
+
+# Exchange API
+cd /root/aitbc/apps/trade-exchange
+/root/aitbc/.venv/bin/python simple_exchange_api.py
+
+# Exchange Frontend
+cd /root/aitbc/apps/trade-exchange
+/root/aitbc/.venv/bin/python server.py --port 3002
+```
+
+## Benefits of Systemd
+
+1. **Automatic Startup**: Services start automatically on boot
+2. **Automatic Restart**: Services restart on failure
+3. **Centralized Logging**: All logs go to journald
+4. **Resource Management**: Systemd manages service resources
+5. **Dependency Management**: Services can depend on each other
+6. **Security**: Services run with specified user/group permissions