Remote development preview

CLI: remote-cli.exe --help
Agent: remote-agent.exe (notification-area icon; no console window)
First launch / double-click opens the local settings UI in your browser to set device_id and token.
When configured, the agent stays in the tray; double-click the tray icon to reopen settings.
Website: https://remote.ivjn.us
Default Exchange: wss://exchange.ivjn.us
