Add v9.1.1: Device registry and remote blocking system

- Implement DeviceRegistry for remote device management
- Add dashboard for device tracking and blocking
- Remote device blocking capability with admin control
- Support for device aliasing and notes
- Enhanced device management interface
- Dashboard with real-time device status
- Configurable registry URL in build config

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

dashboard/node_modules/has-flag/index.js

@@ -0,0 +1,8 @@
+'use strict';
+module.exports = (flag, argv) => {
+	argv = argv || process.argv;
+	const prefix = flag.startsWith('-') ? '' : (flag.length === 1 ? '-' : '--');
+	const pos = argv.indexOf(prefix + flag);
+	const terminatorPos = argv.indexOf('--');
+	return pos !== -1 && (terminatorPos === -1 ? true : pos < terminatorPos);
+};