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.

tools/nodes/common/shader.py

@@ -5,22 +5,18 @@ BUMP_BASE_DISTANCE = 0.001
 def build_material_nodes(group):
     nodes = group.nodes
     group_input = nodes.new("NodeGroupInput")
-    group_input.location = (-500.0, 100.0)
     group_output = nodes.new("NodeGroupOutput")
-    group_output.location = (300.0, 100.0)
     roughness_curve = nodes.new("ShaderNodeFloatCurve")
     roughness_curve.mapping.initialize()
     curve_points = roughness_curve.mapping.curves[0].points
     curve_points[0].location = (0.0, 0.5)
     curve_points[-1].location = (1.0, 0.1)
     roughness_curve.mapping.update()
-    roughness_curve.location = (-250.0, 350.0)
     bump = nodes.new("ShaderNodeBump")
-    bump.location = (100.0, 0.0)
     return group_input, group_output, roughness_curve, bump
 
 
-def connect_material_outputs(group, group_input, group_output, roughness_curve, bump, processed_alpha, bump_location):
+def connect_material_outputs(group, group_input, group_output, roughness_curve, bump, processed_alpha):
     nodes, links = group.nodes, group.links
     links.new(group_input.outputs["Color"], group_output.inputs["Color"])
     links.new(group_input.outputs["Color"], roughness_curve.inputs["Value"])
@@ -33,7 +29,6 @@ def connect_material_outputs(group, group_input, group_output, roughness_curve,
     bump_distance = nodes.new("ShaderNodeMath")
     bump_distance.operation = "MULTIPLY"
     bump_distance.inputs[1].default_value = BUMP_BASE_DISTANCE
-    bump_distance.location = bump_location
     links.new(group_input.outputs["Bump Scale"], bump_distance.inputs[0])
     links.new(bump_distance.outputs[0], bump.inputs["Distance"])
     links.new(bump.outputs["Normal"], group_output.inputs["Normal"])