feat: harden governed PyTorch training programme

backend/tests/test_sprint130_operator_yolo_tile_dataset.py

@@ -75,6 +75,9 @@ def test_operator_yolo_tile_dataset_export_help_does_not_require_gis_dependencie
     assert "--background-negative-repeat" in result.stdout
     assert "--drop-low-variance-negatives" in result.stdout
     assert "--blank-range-threshold" in result.stdout
+    assert "--class-name" in result.stdout
+    assert "--reference-source" in result.stdout
+    assert "--reference-layer" in result.stdout
 
 
 def test_default_validation_split_is_explicit_and_rejects_holdout_leakage() -> None:
@@ -305,7 +308,11 @@ def test_export_can_skip_low_variance_negative_tiles(tmp_path: Path, monkeypatch
 
     monkeypatch.setattr(module, "rasterio", FakeRasterio)
     monkeypatch.setattr(module, "Image", FakeImage)
-    monkeypatch.setattr(module, "load_reference_pixel_boxes", lambda reference_path, dataset, min_label_px: [])
+    monkeypatch.setattr(
+        module,
+        "load_reference_pixel_boxes",
+        lambda reference_path, dataset, min_label_px, **kwargs: [],
+    )
     monkeypatch.setattr(module, "image_array_from_raster_window", fake_image_array_from_raster_window)
 
     records = module.export_sample_tiles(
@@ -327,6 +334,8 @@ def test_export_can_skip_low_variance_negative_tiles(tmp_path: Path, monkeypatch
         background_negative_repeat=1,
         drop_low_variance_negatives=True,
         blank_range_threshold=3,
+        reference_source="grb",
+        reference_layer="buildings",
     )
 
     skipped = [record for record in records if not record["kept"]]