RadarScreen class

A full-screen radar widget with centered content, optional search results displayed in a circle, and a bottom action.

When results is provided and showResults is true, the result widgets appear around the center icon with a staggered scale + fade animation. Each result widget is positioned evenly on a circle of resultsRadius.

{@tool snippet}

// Searching state
RadarScreen(
  centerIcon: Icon(Icons.wifi, color: Colors.white, size: 28),
  label: 'Searching...',
  config: RadarEffectConfig.classic,
)

// Results found
RadarScreen(
  centerIcon: Icon(Icons.wifi, color: Colors.white, size: 28),
  label: 'Found 3 users',
  config: RadarEffectConfig.classic,
  showResults: true,
  resultsRadius: 130.0,
  results: [
    CircleAvatar(child: Text('A')),
    CircleAvatar(child: Text('B')),
    CircleAvatar(child: Text('C')),
  ],
)

{@end-tool}