feat: Implement weight cutout boundary smoothing for image depth cutout

- Added a new proposal for boundary smoothing in the weight cutout process, differentiating between Split edges and Outline smoothing requirements.
- Introduced a new capability `cutout-boundary-smoothing` to control smoothing strength and default values.
- Updated specifications to define the behavior of boundary-specific smoothing strength and default settings.
- Created tasks to verify the implementation of boundary behavior and asset updates.
- Developed comprehensive tests for depth symmetry and normal scaling to ensure expected behavior and performance.
- Introduced new attributes for normal mapping to facilitate persistent face attributes sharing between depth symmetry and image materials.
- Built a new node group for O Image Depth Symmetry, integrating the new smoothing capabilities and ensuring compatibility with existing workflows.

tests/anyimage/operators/test_cutout_calibration.py

@@ -28,7 +28,7 @@ def test_base_plane_fit_is_stable_for_a_slender_diagonal_domain():
     assert np.corrcoef(selected_plane, along)[0, 1] > 0.99
 
 
-def test_depth_balloon_plane_calibration_matches_cutout_axes():
+def test_depth_symmetry_plane_calibration_matches_cutout_axes():
     vertices = []
     uv = []
     camera_depth = np.empty((3, 3), dtype=np.float32)
@@ -40,7 +40,7 @@ def test_depth_balloon_plane_calibration_matches_cutout_axes():
             uv.append((column * 0.5, 1.0 - row * 0.5))
             camera_depth[row, column] = 2.0 + 0.2 * local_x + 0.1 * local_y
 
-    reference, direction = depth_calibration.depth_balloon_projection_parameters(
+    reference, direction = depth_calibration.depth_symmetry_projection_parameters(
         vertices,
         uv,
         camera_depth,
@@ -58,7 +58,7 @@ def test_depth_balloon_plane_calibration_matches_cutout_axes():
     assert np.allclose(direction, expected_direction, atol=1e-6)
 
 
-def test_depth_balloon_reference_uses_the_shared_upper_depth_percentile():
+def test_depth_symmetry_reference_uses_the_shared_upper_depth_percentile():
     size = 10
     row, column = np.indices((size, size))
     camera_depth = np.full((size, size), 2.0, dtype=np.float32)
@@ -70,7 +70,7 @@ def test_depth_balloon_reference_uses_the_shared_upper_depth_percentile():
             vertices.append((float(x), float(size - 1 - y), 0.0))
             uv.append((x / (size - 1), 1.0 - y / (size - 1)))
 
-    reference, direction = depth_calibration.depth_balloon_projection_parameters(
+    reference, direction = depth_calibration.depth_symmetry_projection_parameters(
         vertices,
         uv,
         camera_depth,