Aahar Nearby

// Deterministic radius bounding and stream subscription
Stream<List<RestaurantEntity>> watchNearbyOutlets({
  required Coordinate userLocation,
  required double radiusKm,
}) {
  return _firestoreRepository
      .streamActiveMenuSnapshots()
      .map((outlets) => outlets.where((outlet) {
            final distance = Haversine.computeDistance(
              lat1: userLocation.latitude,
              lon1: userLocation.longitude,
              lat2: outlet.coordinate.latitude,
              lon2: outlet.coordinate.longitude,
            );
            return distance <= radiusKm && outlet.hasActiveMenuToday;
          }).toList()
        ..sort((a, b) => a.distance.compareTo(b.distance)));
}