feat(perception): qualify conservative static occupancy

tests/test_geometry_association_provider.py

@@ -152,6 +152,15 @@ def test_profile_is_strict_digest_bound_and_store_accepts_exact_evidence() -> No
     assert store.profile.local_surface_sha256 == (
         "f57eb2485b6cef47f2a97a2d9ff1aa9fd9265fe1eb69cd5852d12f39e13b8bc6"
     )
+    step_candidates = store.point_step_candidates_for_frame(0)
+    assert step_candidates is not None
+    assert step_candidates.shape == (2389,)
+    assert step_candidates.dtype == np.uint8
+    assert step_candidates.flags.writeable is False
+    with pytest.raises(ValueError):
+        step_candidates[0] = 0
+    with pytest.raises(GeometryProviderError, match="frame index"):
+        store.point_step_candidates_for_frame(True)
 
 
 def test_provider_arbitrates_points_and_publishes_classless_geometry_only() -> None: