Clean up nanobind typing and source layout

tests/test_interface.py

@@ -56,7 +56,7 @@ def test_camera_structure_repr():
         [[1, 0, 0], [0, 1, 0], [0, 0, 1]],
         [0, 0, 0, 0, 0],
         [[1, 0, 0], [0, 1, 0], [0, 0, 1]],
-        [[1], [2], [3]],
+        [1, 2, 3],
         640,
         480,
         rpt.CameraModel.PINHOLE,
@@ -65,6 +65,7 @@ def test_camera_structure_repr():
     rendered = repr(camera)
     assert "Camera 1" in rendered
     assert "pinhole" in rendered
+    np.testing.assert_allclose(np.asarray(camera.T, dtype=np.float32).reshape(3), [1.0, 2.0, 3.0])
 
 
 @pytest.mark.parametrize(

tests/test_typing_artifacts.py

@@ -0,0 +1,18 @@
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_checked_in_core_stub_exists():
+    assert (ROOT / "src" / "rpt" / "_core.pyi").exists()
+
+
+def test_checked_in_core_stub_matches_generated_stub():
+    generated_stub = ROOT / "build" / "bindings" / "rpt" / "_core.pyi"
+    if not generated_stub.exists():
+        pytest.skip("Build-generated nanobind stub is unavailable.")
+
+    checked_in_stub = ROOT / "src" / "rpt" / "_core.pyi"
+    assert checked_in_stub.read_text(encoding="utf-8") == generated_stub.read_text(encoding="utf-8")