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.

docs/internals/operators/index.md

@@ -5,11 +5,12 @@
 | `operators/ai_setup.py` | [AI 环境管理](ai-setup.md) |
 | `operators/clipboard_image/` | [剪贴板图片](clipboard-image.md) |
 | `operators/convert_to_plane/` | [Plane 与 Depth Plane](convert-to-plane.md) |
+| `operators/convert_to_panorama/` | [Panorama](convert-to-panorama.md) |
 | `operators/cutout_tool/` | [Cutout](cutout-tool.md) |
-| `operators/frame_tool.py` | [Frame 多图合成](frame.md) |
+| `operators/frame_tool/operators.py` | [Frame 多图合成](frame.md) |
 | `operators/mask_tool.py` | [Mask Alpha 编辑](mask.md) |
-| `operators/rectify_tool.py` | [Rectify 透视校正](rectify.md) |
+| `operators/rectify_tool/operators.py` | [Rectify 透视校正](rectify.md) |
 | `operators/remove_background.py` | [Remove Background](remove-background.md) |
 | `operators/upscale.py` | [Upscale](upscale.md) |
 
-单文件功能按业务命名；复杂功能包在 `operators.py` 定义 Operator、对应 WorkSpaceTool 和入口协调逻辑，其余模块承载具体实现。包的 `__init__.py` 汇总导出，类型在 `operators/__init__.py` 和扩展 `__init__.py` 汇总注册。AI Operator 使用普通字典提交任务，并在主线程响应中读取文件和修改 Blender 数据。
+单文件功能按业务命名；复杂功能包在 `operators.py` 定义 Operator、对应 WorkSpaceTool 和入口协调逻辑，其余模块承载具体实现。包的 `__init__.py` 汇总导出与 `CLASSES` 注册清单，类型在 `operators/__init__.py` 和扩展 `__init__.py` 汇总注册。AI Operator 使用普通字典提交任务，并在主线程响应中读取文件和修改 Blender 数据。