Prepare SillyHome Next 1.0.0 dashboard and API rework

tests/api/test_actuators.py

@@ -28,8 +28,10 @@ class FakeHaReader(HaReader):
     def __init__(self, entities: list[HaEntitySummary], history: dict[str, list[float]]) -> None:
         self._entities = entities
         self._history = history
+        self.read_entities_calls = 0
 
     def read_entities(self) -> list[HaEntitySummary]:
+        self.read_entities_calls += 1
         return list(self._entities)
 
     def discover(
@@ -230,6 +232,36 @@ def test_summary_is_lightweight_and_uses_cached_entity_metadata(tmp_path: Path)
     assert "numeric_candidates" not in payload[0]
 
 
+def test_dashboard_overview_uses_cache_without_ha_roundtrip(tmp_path: Path) -> None:
+    with TestClient(app) as client:
+        _install_service(tmp_path)
+        reader = app.state.ha_reader
+        client.get("/v1/actuators/discovery")
+        client.post("/v1/actuators", json={"actuator_entity_id": "light.abstellkammer"})
+        calls_before = reader.read_entities_calls
+
+        response = client.get("/v1/actuators/dashboard")
+
+    assert response.status_code == 200
+    assert reader.read_entities_calls == calls_before
+    payload = response.json()
+    assert payload["cache"]["available"] is True
+    assert payload["cache"]["entity_count"] == 4
+    assert payload["actuators"][0]["friendly_name"] == "Abstellkammer Licht"
+    assert payload["discovery_groups"]
+
+
+def test_discovery_reads_entities_once_and_reuses_them(tmp_path: Path) -> None:
+    with TestClient(app) as client:
+        _install_service(tmp_path)
+        reader = app.state.ha_reader
+
+        response = client.get("/v1/actuators/discovery", params={"refresh": True})
+
+    assert response.status_code == 200
+    assert reader.read_entities_calls == 1
+
+
 def test_context_options_returns_learnable_entities(tmp_path: Path) -> None:
     with TestClient(app) as client:
         _install_service(tmp_path)