feat: Implement cutout tool and depth generation features

- Added a new cutout tool for selecting regions in images, allowing users to choose mesh shapes based on selected areas.
- Introduced depth generation capabilities for rasterized images, including normal data extraction.
- Created jobs for generating depth planes and region data, enhancing the AI data generation workflow.
- Developed a selection refinement process for cutout regions, improving accuracy in generated outputs.
- Established a new region module for handling rasterized image regions and their associated AI generation tasks.
- Enhanced node graph builders for asset generation, facilitating smoother integration of new features.

docs/internals/operators/index.md

@@ -1,6 +1,6 @@
 # Operator 实现索引
 
-`src/anyimage/operators/` 负责 Blender 侧交互、Job 请求组装和结果导入。内部实现按完整功能包或顶层业务模块拆页；只提供共享能力的 `common/` 不单独成页，其职责统一放在[程序架构](../architecture.md)中说明。
+`src/anyimage/operators/` 负责 Blender 侧交互、Job 请求组装和结果导入。内部实现按完整功能包或顶层业务模块拆页；`common/` 的边界见[程序架构](../architecture.md)，实际公开入口见[Common 公共函数](../common.md)。
 
 | Operator 路径 | 实现页 | 主要职责 |
 | --- | --- | --- |
@@ -8,11 +8,11 @@
 | `operators/ai_setup.py` | [AI 环境管理](ai-setup.md) | 环境安装、模型下载与缓存释放 |
 | `operators/clipboard_image/` | [Clipboard Image](clipboard-image.md) | 系统剪贴板读取、粘贴与快捷键 |
 | `operators/convert_to_plane/` | [Convert to Plane](convert-to-plane.md) | Mesh Plane 与 Depth Plane 创建 |
-| `operators/cutout_tool/` | [Cutout Tool](cutout-tool.md) | 区域选择、轮廓生成与 Shape 构建 |
+| `operators/cutout_tool/` | [Cutout Tool](cutout-tool.md) | Region 选择、基础 Shape 构建与 Blender 对象创建 |
 | `operators/debug.py` | [Debug Operator](debug.md) | 模型接口与原始产物验证 |
 | `operators/image_tool/` | [Image Tool](image-tool.md) | Box、Lasso、Line 与 Polyline 编辑 |
 | `operators/perspective_tool/` | [Perspective Tool](perspective-tool.md) | 四点透视框与透视校正 |
 | `operators/remove_background.py` | [Remove Background](remove-background.md) | BEN2 去背与结果替换 |
-| `operators/upscale.py` | [Upscale](upscale.md) | 4× 高清与原图引用维护 |
+| `operators/upscale.py` | [Upscale](upscale.md) | 当前 Image 的 4× 高清与输入长边检查 |
 
 `operators/__init__.py` 只聚合注册类，不承载独立业务流程。具体类的注册和逆序注销由扩展入口统一管理，整体边界见[程序架构](../architecture.md)。