feature/api-core: API-V1-Gerüst und Entitäten-Endpoint

app/api/v1/entities.py

@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+from typing import List, Sequence
+
+from fastapi import APIRouter
+
+from app.ha.models import HaEntitySummary
+
+router = APIRouter(prefix="/v1", tags=["entities"])
+
+
+@router.get(
+    "/entities",
+    summary="Home-Assistant-Entities auflisten",
+    description="Gibt eine kompakte Zusammenfassung aller erreichbaren HA-Entitäten zurück.",
+    response_model=List[HaEntitySummary],
+)
+def list_entities() -> Sequence[HaEntitySummary]:
+    raise NotImplementedError("Integration mit dem HA-Client folgt in separatem Issue.")

tests/api/test_entities.py

@@ -0,0 +1,10 @@
+from fastapi.testclient import TestClient
+from app.main import app
+
+client = TestClient(app)
+
+
+def test_openapi_docs_are_available() -> None:
+    response = client.get("/docs")
+    assert response.status_code == 200
+    assert "SillyHome Next API" in response.text