leonard_host

A pure-Dart VM-service host for Leonard. ExplorationHost exposes a set of leonard_contract extensions over the same ext.leonard.* VM-service surface the Flutter binding hosts — minus the Flutter-only core fragment (semantics / routes / screenshot) — so a non-Flutter Dart program can be perceived and driven live by leonard_cli / leonard_drive.

final host = ExplorationHost(extensions: [MyExtension()]);
await host.install(); // registers ext.leonard.core.handshake,
                      // core.get_stable_observation, and a per-tool extension.

Run the hosting program with the VM service enabled (e.g. dart run --enable-vm-service); the driver connects to the printed ws://…/ws.

example/canonical_perception_extension.dart is a runnable pure-Dart extension using the canonical synchronous Component contract:

dart run example/canonical_perception_extension.dart

Its observation remains nested under extensions.example.

Pre-1.0 and experimental; APIs may change before 1.0.