feat(cloud-store): support SQLite and PostgreSQL engines

apps/cloud-api/tests/test_app.py

@@ -1,6 +1,9 @@
 from __future__ import annotations
 
+from fastapi.testclient import TestClient
+
 from cloud_api.app import create_app
+from cloud.control_config import CloudControlConfig
 
 
 def test_create_app_returns_independent_cloud_application() -> None:
@@ -8,3 +11,23 @@ def test_create_app_returns_independent_cloud_application() -> None:
 
     assert app.title == "Device Cloud API"
     assert callable(create_app)
+
+
+def test_cloud_application_owns_database_lifecycle() -> None:
+    events: list[str] = []
+
+    class FakeDatabase:
+        def close(self) -> None:
+            events.append("closed")
+
+    fake_database = FakeDatabase()
+    app = create_app(
+        config=CloudControlConfig(database_url="sqlite:///:memory:"),
+        database_factory=lambda _config: fake_database,  # type: ignore[arg-type,return-value]
+    )
+
+    with TestClient(app):
+        assert app.state.database is fake_database
+        assert events == []
+
+    assert events == ["closed"]