Fix FastAPI index rendering

Use the current TemplateResponse signature and cover the live controls page.

tests/test_status.py

@@ -18,3 +18,16 @@ def test_status_contains_service_configuration(tmp_path, monkeypatch):
     assert "movies_root" in payload
     assert "tv_root" in payload
     assert "auth_enabled" in payload
+
+
+def test_index_renders_queue_controls(tmp_path, monkeypatch):
+    monkeypatch.setenv("IMPORTARR_STATE_PATH", str(tmp_path / "state.db"))
+    import importarr.main as main
+
+    from fastapi.testclient import TestClient
+
+    response = TestClient(main.app).get("/")
+
+    assert response.status_code == 200
+    assert "Queue controls" in response.text
+    assert "cancel-current" in response.text