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_ai_image_operators.py

@@ -21,11 +21,11 @@ class AiImageOperatorsTest(BlenderTestCase):
         self.assertEqual(operator_type.bl_options, {"UNDO"})
         operator = operator_type()
         operator.input_path = "input.png"
-        operator._image_target = SimpleNamespace(start_frame=4)
+        operator._image_target = SimpleNamespace()
         operator.model = "HAT_GAN_X4_SHARPER"
         operator.max_input_size = 1024
         context = SimpleNamespace(
-            scene=SimpleNamespace(anyimage_settings=SimpleNamespace(video_frames=7))
+            scene=SimpleNamespace(anyimage_settings=SimpleNamespace())
         )
         with (
             patch.object(self.upscale, "require_environment"),
@@ -44,8 +44,6 @@ class AiImageOperatorsTest(BlenderTestCase):
                 "input": "input.png",
                 "model": "HAT_GAN_X4_SHARPER",
                 "device": "cuda",
-                "video_frames": 7,
-                "start_frame": 4,
                 "max_input_size": 1024,
             },
         )
@@ -89,7 +87,7 @@ class AiImageOperatorsTest(BlenderTestCase):
 
 
     def test_remove_background_loads_a_plain_image_edit_result(self):
-        result = SimpleNamespace(directory=Path("result"))
+        result = SimpleNamespace(file=lambda key: Path("result") / f"{key}.png")
         operator = self.remove_background.RunBackgroundRemoval()
         operator._image_target = Mock()
         ops = SimpleNamespace(
@@ -100,12 +98,12 @@ class AiImageOperatorsTest(BlenderTestCase):
         ):
             operator.response(None, result)
 
-        operator._image_target.apply.assert_called_once_with(Path("result"))
+        operator._image_target.apply.assert_called_once_with(Path("result/foreground.png"))
         ops.ed.undo_push.assert_called_once_with(message="Remove Background")
 
 
     def test_upscale_loads_a_plain_image_edit_result(self):
-        result = SimpleNamespace(directory=Path("result"))
+        result = SimpleNamespace(file=lambda key: Path("result") / f"{key}.png")
         operator = self.upscale.UpscaleImage()
         operator._image_target = Mock()
         operator.model = "HAT_GAN_X4_SHARPER"
@@ -119,7 +117,6 @@ class AiImageOperatorsTest(BlenderTestCase):
             message = operator.response(None, result)
 
         operator._image_target.apply.assert_called_once_with(
-            Path("result"),
-            frame_prefix="upscale.",
+            Path("result/upscale.png"),
         )
         self.assertEqual(message, "Image is upscaled with HAT Sharper")