Add tools and tests for AnyImage model management and documentation

- Implement sync_models.py for preparing and uploading ONNX artifacts.
- Create build_node.py for building and validating Blender scripts.
- Add docs.py for building and previewing documentation with Mike or MkDocs.
- Introduce model_exports.py for exporting PyTorch models to ONNX format.
- Develop pack.py for packaging the project with dependencies for different platforms.
- Add test_sync_models.py to validate sync_models functionality.
- Add test_tool_commands.py to ensure repository tools have correct command scripts.
- Initialize tools package with __init__.py.

docs/internals/operators/convert-to-plane.md

@@ -15,7 +15,7 @@ flowchart TD
     Import --> Depth["创建 Depth Plane Object"]
 ```
 
-两条路径共用 Image Empty 的显示范围、颜色材质和基础 Plane。Depth Plane 多出一次 Server Job，并由节点根据相机元数据把 Z Depth 转换为局部位移。正式流程只使用 MoGe-2；DA3 只保留 Debug 入口。
+两条路径共用 Image Empty 的显示范围、颜色材质和基础 Plane。Depth Plane 通过一次 MoGe-2 Server Job 生成 Z Depth，再由节点根据相机元数据转换为局部位移。
 
 ## 节点说明