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/common/test_input_preparation.py

@@ -7,20 +7,6 @@ from tests.support.blender import BlenderTestCase
 
 
 class InputPreparationTest(BlenderTestCase):
-    def test_sequence_format_is_checked_before_copy(self):
-        with tempfile.TemporaryDirectory() as directory:
-            path = Path(directory) / "frame.0001.exr"
-            path.touch()
-            image = SimpleNamespace(source="SEQUENCE")
-            with (
-                patch.object(self.image_data, "image_path", return_value=path),
-                patch.object(self.image_data, "image_is_packed", return_value=False),
-                patch.object(self.image_data.tempfile, "mkdtemp") as create,
-            ):
-                with self.assertRaisesRegex(RuntimeError, "Unsupported input format: .exr"):
-                    self.image_data.prepare_image_input(image, None)
-            create.assert_not_called()
-            self.assertTrue(path.exists())
 
     def test_packed_export_failure_removes_temporary_directory(self):
         for failure in (OSError("disk full"), None):
@@ -34,21 +20,11 @@ class InputPreparationTest(BlenderTestCase):
                 self.assertEqual(image.file_format, "OPEN_EXR")
                 self.assertFalse(output.exists())
 
-    def test_sequence_copy_failure_preserves_originals(self):
-        with tempfile.TemporaryDirectory() as directory:
-            root = Path(directory)
-            source = root / "frame.0001.png"
-            source.write_bytes(b"source")
-            output = root / "prepared"
-            output.mkdir()
-            with (
-                patch.object(self.image_data, "image_path", return_value=source),
-                patch.object(self.image_data, "image_is_packed", return_value=False),
-                patch.object(self.image_data, "collect_sequence_frames", return_value=[source]),
-                patch.object(self.image_data.tempfile, "mkdtemp", return_value=str(output)),
-                patch.object(self.image_data.shutil, "copy2", side_effect=OSError("disk full")),
-            ):
-                with self.assertRaises(OSError):
-                    self.image_data.prepare_image_input(SimpleNamespace(source="SEQUENCE"), None)
-            self.assertFalse(output.exists())
-            self.assertEqual(source.read_bytes(), b"source")
+
+    def test_animated_inputs_are_rejected_before_export(self):
+        for source in ("MOVIE", "SEQUENCE"):
+            with self.subTest(source=source), patch.object(self.image_data, "save_packed_image") as export:
+                image = SimpleNamespace(source=source, packed_file=object())
+                with self.assertRaisesRegex(RuntimeError, "Only still images"):
+                    self.image_data.prepare_image_input(image, None)
+                export.assert_not_called()