Stabilize backend route tests

backend/tests/test_results_service.py

@@ -1,9 +1,6 @@
 from pathlib import Path
 
-from fastapi.testclient import TestClient
-
 from app import main
-from app.main import app
 from app.modules.results.service import parse_training_curve
 
 
@@ -39,9 +36,9 @@ def test_results_api_honors_limit(monkeypatch):
         return [{"name": "a.png", "relative_path": "var/a.png"}]
 
     monkeypatch.setattr(main, "scan_results", fake_scan_results)
-    response = TestClient(app).get("/api/results?limit=123")
+    response = main.api_results(limit=123)
 
-    assert response.status_code == 200
+    assert response == [{"name": "a.png", "relative_path": "var/a.png"}]
     assert calls["limit"] == 123
 
 
@@ -53,7 +50,7 @@ def test_results_curve_api_honors_limit(monkeypatch):
         return [{"name": "results", "relative_path": "var/results.csv"}]
 
     monkeypatch.setattr(main, "scan_training_curves", fake_scan_training_curves)
-    response = TestClient(app).get("/api/results/curves?limit=77")
+    response = main.api_result_curves(limit=77)
 
-    assert response.status_code == 200
+    assert response == [{"name": "results", "relative_path": "var/results.csv"}]
     assert calls["limit"] == 77