feat(workbench): keep only actionable notifications

tests/unit/test_operational_tasks.py

@@ -357,6 +357,7 @@ async def test_complete_without_same_generation_artifacts_fails_run_explicitly()
     assert repository.run["failure_code"] == "ARTIFACT_INCOMPLETE"
     assert completed.lifecycle_status == "failed"
     assert completed.active_run is None
+    assert [item["kind"] for item in repository.notifications] == ["task_failed"]
 
 
 @pytest.mark.anyio
@@ -451,6 +452,9 @@ async def test_plan_only_keeps_lease_until_same_generation_report_closes_run():
     )
     assert completed.status == "waiting_human"
     assert completed.agent_lease_expires_at is None
+    assert [item["kind"] for item in repository.notifications] == [
+        "human_input_required"
+    ]
 
 
 @pytest.mark.anyio
@@ -521,6 +525,9 @@ async def test_action_proposal_keeps_running_lease_until_plan_and_report_close_r
     )
     assert closed.status == "waiting_human"
     assert closed.actions[0].action_id == action.action_id
+    assert [item["kind"] for item in repository.notifications] == [
+        "action_approval_pending"
+    ]
 
 
 @pytest.mark.anyio
@@ -786,6 +793,9 @@ async def test_interrupted_submit_replays_unknown_without_dispatching_twice():
     assert dispatcher.calls == 1
     assert replay.execution_status == "unknown"
     assert replay.execution_request_id is not None
+    assert [item["kind"] for item in repository.notifications] == [
+        "external_coordination_failed"
+    ]
 
 
 @pytest.mark.anyio