feat: Implement upscale functionality with ONNX models

- Added upscale operator to handle image upscaling by 4x using AI models.
- Introduced new jobs for upscale processing in the server, including debug and standard upscale jobs.
- Created a new ONNX model handler for upscale operations, supporting tiled inference and resource management.
- Updated tests to cover new upscale functionality, including input validation and output verification.
- Added documentation for the upscale feature, detailing usage and model options.

docs/surface.md

@@ -57,7 +57,7 @@ DA3 使用 `O DA3 Surface`，MoGe-2 使用 `O MoGe2 Surface`。两者采用相
 
 ## 材质与文件
 
-颜色统一写为 `color.0001.*` 并导入为 `.color` Image。MoGe-2 还会输出 `normal.png`，用于材质法线。材质名称以源 Image datablock 为基名。
+颜色统一写为 `image.0001.*`，导入时沿用源 Image 名称，由 Blender 自动解决同名冲突。MoGe-2 还会输出 `normal.png`，用于材质法线。材质名称以源 Image datablock 为基名。
 
 单图结果可以 Pack 到 `.blend`。模型原始结果与 `mesh.npz` 保留在 Job 目录中，便于调试和重新检查。