Gate real train curve evidence

backend/tests/test_agents.py

@@ -11,6 +11,7 @@ def test_evaluation_agent_returns_checks():
     checks = {item["name"]: item["passed"] for item in result["checks"]}
     assert checks["real_workspace_acceptance"] is True
     assert checks["real_train_acceptance"] is True
+    assert checks["single_epoch_curve_support"] is True
 
 
 def test_validation_agent_lightweight(monkeypatch):

backend/tests/test_capabilities.py

@@ -19,5 +19,6 @@ def test_capability_matrix_tracks_user_requirements():
     assert requirements["runtime_readiness"]["passed"] is True
     assert requirements["yolo_heatmap"]["passed"] is True
     assert requirements["training_curves"]["passed"] is True
+    assert requirements["real_train_curve"]["passed"] is True
     assert requirements["real_workspace_acceptance"]["passed"] is True
     assert requirements["real_train_acceptance"]["passed"] is True