Release v0.1.9: enforce Photos API boundary and finalize Server migration

tests/test_photo_failures.py

@@ -1,3 +1,4 @@
+import pytest
 from PIL import Image
 
 from pigway_frame_flow.providers.photo_sources import PhotoSourceInput
@@ -101,3 +102,7 @@ def test_random_bad_images_bounded_to_five(client, service, settings, monkeypatc
         "SELECT write_started FROM operations WHERE id=?", (op["operation_id"],)
     )
     assert row["write_started"] == 0
+
+
+# Legacy algorithms remain covered; production filesystem access is tested separately.
+pytestmark = pytest.mark.usefixtures("legacy_photo_engine")