Split dashboard views and compact detail loading

tests/api/test_actuators.py

@@ -462,6 +462,23 @@ def test_dashboard_reports_performance_budget_and_anomalies(tmp_path: Path) -> N
     assert anomalies_response.json()
 
 
+def test_actuator_detail_uses_compact_payload(tmp_path: Path) -> None:
+    with TestClient(app) as client:
+        _install_service(tmp_path)
+        client.get("/v1/actuators/discovery")
+        client.post("/v1/actuators", json={"actuator_entity_id": "light.abstellkammer"})
+
+        response = client.get("/v1/actuators/light.abstellkammer/detail")
+
+    assert response.status_code == 200
+    payload = response.json()
+    assert payload["behavior"]["patterns"] == []
+    assert all(
+        snapshot["patterns"] == []
+        for snapshot in payload["behavior"]["model_snapshots"]
+    )
+
+
 def test_discovery_reads_entities_once_and_reuses_them(tmp_path: Path) -> None:
     with TestClient(app) as client:
         _install_service(tmp_path)