Refactor and clean up codebase by removing unused functions and reorganizing imports

- Removed unused model keys and functions from properties.py.
- Deleted projection.py as its functions were no longer needed.
- Cleaned up model_catalog.py by removing unused model directory function.
- Updated imports in various test files to reflect new module structure.
- Removed deprecated test cases related to image editing tools.
- Added new tests for ONNX runtime provider selection logic.

docs/internals/operators/index.md

@@ -6,10 +6,10 @@
 | `operators/clipboard_image/` | [剪贴板图片](clipboard-image.md) |
 | `operators/convert_to_plane/` | [Plane 与 Depth Plane](convert-to-plane.md) |
 | `operators/cutout_tool/` | [Cutout](cutout-tool.md) |
-| `operators/image_edit_tool/frame.py` | [Frame 多图合成](frame.md) |
-| `operators/image_edit_tool/mask.py` | [Mask Alpha 编辑](mask.md) |
-| `operators/image_edit_tool/rectify.py` | [Rectify 透视校正](rectify.md) |
+| `operators/frame_tool.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/remove_background.py` | [Remove Background](remove-background.md) |
 | `operators/upscale.py` | [Upscale](upscale.md) |
 
-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，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。