feat(cutout_tool): Implement cutout region to shape functionality

- Added interaction helpers for cutout region validation and shape menu interaction.
- Created main operator for converting image regions into cutout shapes, including AI artifact generation.
- Introduced object creation logic for cutout shapes, handling depth and normal textures.
- Defined cutout shape identifiers and node groups for various shape types.
- Implemented depth texture writing and prediction artifact generation for MoGe-2.
- Developed server jobs for generating cutout artifacts, depth planes, and refining image regions.
- Added region refinement logic to enhance gesture masks using BEN2.

docs/guides/depth-plane.md

@@ -16,12 +16,6 @@ Depth Plane 将一张静态图片转换为带深度位移的网格，适合快
 
 默认推荐。MoGe-2 估算尺度一致的深度与相机信息，使用 **MoGe Resolution Level** 控制处理精度。第一次使用建议保持 `5`。
 
-### DA3
-
-DA3 提供另一种深度结果，使用 **DA3 Resolution Scale** 按原图长边计算处理尺寸。比例越高，通常会保留更多细节，也会增加耗时和内存占用。
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-切换模型后，如果对应文件尚未下载，先在同一设置区点击 **Download**。
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 ## 调整结果
 
 生成对象使用运行时创建的 `O Image Depth Plane` Geometry Nodes 修改器：