refactor(bus): type outbound runtime events

tests/agent/tools/test_long_task.py

@@ -13,6 +13,7 @@ from nanobot.agent.tools.long_task import (
     CompleteGoalTool,
     LongTaskTool,
 )
+from nanobot.bus.outbound_events import GoalStateSyncEvent
 from nanobot.bus.queue import MessageBus
 from nanobot.bus.runtime_events import RuntimeEventBus
 from nanobot.session.goal_state import GOAL_STATE_KEY
@@ -144,8 +145,8 @@ async def test_long_task_publishes_goal_state_ws_after_save(tmp_path):
     call = bus.publish_outbound.await_args.args[0]
     assert call.channel == "websocket"
     assert call.chat_id == "chat-99"
-    assert call.metadata.get("_goal_state_sync") is True
-    assert call.metadata["goal_state"] == {
+    assert isinstance(call.event, GoalStateSyncEvent)
+    assert call.event.goal_state == {
         "active": True,
         "ui_summary": "alpha",
         "objective": "Objective alpha",
@@ -180,7 +181,8 @@ async def test_complete_goal_publishes_inactive_goal_state_ws(tmp_path):
 
     bus.publish_outbound.assert_awaited_once()
     call = bus.publish_outbound.await_args.args[0]
-    assert call.metadata["goal_state"] == {"active": False}
+    assert isinstance(call.event, GoalStateSyncEvent)
+    assert call.event.goal_state == {"active": False}
 
 
 @pytest.mark.asyncio