- Add user-agent-updater.js to automatically fetch latest factory-cli version
- Fetch version from https://downloads.factory.ai/factory-cli/LATEST on startup
- Automatically refresh version every hour
- Implement retry mechanism: max 3 retries with 1-minute intervals on failure
- Use user_agent from config.json as fallback value
- Update config.js to use dynamic user-agent
- Initialize updater in server.js startup sequence
