Refactor Cutout and Image Editing Logic

- Renamed "Base Plane Depth" to "Reference Depth" across validate_cutout.py for consistency.
- Introduced a new specification for Cutout mesh sampling to ensure source pixel spacing is preserved and limits are applied correctly.
- Unified naming conventions for image editing results to maintain consistency across Remove Background, Upscale, and Crop operations.
- Updated the handling of Refine Selection to ensure it retains the original bounds and does not apply unnecessary cropping.
- Enhanced material generation logic to connect image color directly to IOR Level, improving the rendering of dark areas.
- Established clear requirements for geometry depth controls and image result materials to ensure consistent behavior across different components.
- Removed outdated logic and ensured all changes are documented and tested for regression.

src/anyimage/operators/upscale.py

@@ -19,7 +19,7 @@ from ..common.image import (
     cleanup_image_input,
     default_extract_frames,
     is_image_empty,
-    load_color_result_image,
+    load_image_edit_result,
     prepare_image_input,
     source_start_frame,
     replace_empty_image,
@@ -148,7 +148,7 @@ class UpscaleImage(JobOperatorBase, bpy.types.Operator):
         source_image = bpy.data.images.get(self.source_image_name)
         if source_image is None:
             raise RuntimeError("The source image is no longer available")
-        result_image = load_color_result_image(
+        result_image = load_image_edit_result(
             source_object,
             result.directory,
             frame_prefix="upscale.",