/// Cross-app interoperability contracts for the Halkyon ecosystem.
///
/// This package is pure Dart and defines:
/// - `TaskShape`: a minimal type for representing tasks across apps
///   (e.g., a Halkyon Learn review session surfaced in Halkyon ToDo).
/// - `HalkyonEvent`: a sealed class hierarchy for cross-app events.
/// - `EventPublisher`: an interface for emitting events to other apps,
///   with `DormantPublisher` as a no-op default for apps running standalone.
library;

export 'src/event_publisher.dart';
export 'src/events.dart';
export 'src/task_shape.dart';