Add new functionality for image rectification and depth metadata handling

- Implemented a preview tool for rectifying images with interactive aspect controls in `preview.py`.
- Added tests for depth metadata loading to ensure consistent schema usage in `test_depth_metadata.py`.
- Developed comprehensive tests for cutout calibration processes in `test_cutout_calibration.py`, including stability checks and depth calibration.
- Created tests for frame compositing operations in `test_frame_compositing.py`, ensuring correct handling of depth and transparency.
- Introduced material slot inheritance functionality in `material_slots.py` to manage geometry material assignments.
- Built shared shader nodes for material processing in `shader.py`, including roughness and bump mapping setups.

tests/anyimage/operators/test_cutout_depth.py

@@ -3,7 +3,8 @@ import numpy as np
 import pytest
 from anyimage.operators.cutout_tool.object import load_cutout_node_group
 from anyimage.operators.cutout_tool.operators import normal_mode_for_shape
-from anyimage.operators.cutout_tool.geometry import refine_balloon_triangles, poisson_balloon_profile
+from anyimage.operators.cutout_tool.geometry import refine_balloon_triangles
+from anyimage.operators.cutout_tool.balloon import poisson_balloon_profile
 
 
 @pytest.mark.parametrize("enabled", [False, True])
@@ -20,18 +21,18 @@ def test_new_cutout_does_not_reuse_a_saved_wrapper():
     saved.interface.new_socket(name="Shape", in_out="INPUT", socket_type="NodeSocketMenu")
     saved.use_fake_user = True
     current = load_cutout_node_group("SOLID")
-    assert current != saved and current.get("anyimage_asset_revision") == 11
+    assert current != saved and current.get("anyimage_asset_revision") == 13
     assert saved in bpy.data.node_groups.values()
     assert current == load_cutout_node_group("FLAT")
     assert any(item.name == "Shape" for item in saved.interface.items_tree)
 
 
-def test_depth_cutout_loads_boundary_blur_revision_and_preserves_existing_group():
+def test_depth_cutout_loads_uniform_thickness_revision_and_preserves_existing_group():
     bpy.ops.wm.read_factory_settings(use_empty=True)
     saved = bpy.data.node_groups.new("O Image Depth Cutout", "GeometryNodeTree")
     saved["anyimage_asset_revision"] = 11
     current = load_cutout_node_group("DEPTH_SOLID")
-    assert current != saved and current["anyimage_asset_revision"] == 23
+    assert current != saved and current["anyimage_asset_revision"] == 26
     assert saved in bpy.data.node_groups.values()
     assert saved["anyimage_asset_revision"] == 11
     assert load_cutout_node_group("DEPTH_SOLID") == current