Implement BiRefNet and HAT Sharper models with background removal capabilities

- Added validation documentation for AI model tiers.
- Introduced `background.py` for background removal logic, including inference functions for alpha and foreground extraction.
- Created `onnx_birefnet.py` to handle BiRefNet model sessions and alpha inference.
- Developed tests for background models, ensuring proper dispatch and session reuse.
- Added tests for BiRefNet ONNX model to validate alpha output and error handling for invalid values.
- Implemented model export scripts for BiRefNet and HAT Sharper, ensuring proper weight compression and licensing.
- Created `deform_sampling.py` for deformable convolution operations used in BiRefNet.
- Added utility functions for compressing ONNX weights without altering graph arithmetic.
- Introduced a reference plane node for depth field adjustments in geometry processing.

src/anyimage/operators/cutout_tool/operators.py

@@ -6,15 +6,16 @@ import bpy
 
 from ...preferences import (
     addon_preferences,
+    configured_geometry_model,
     configured_max_ai_input_size,
     configured_max_cutout_mesh_resolution,
 )
 from ...properties import (
-    DEFAULT_MOGE2_MODEL_KEY,
     cutout_alpha_threshold_property,
     cutout_fine_outline_property,
 )
 from ...runtime import JobOperatorBase
+from ...server.model_catalog import DEFAULT_GEOMETRY_MODEL_KEY
 from ...server.media.resolution import (
     DEFAULT_MAX_AI_INPUT_SIZE,
     MAX_MAX_AI_INPUT_SIZE,
@@ -169,7 +170,7 @@ def _generated_color_result(input_path, source_bounds):
 
 def cutout_geometry_settings(context):
     preferences = addon_preferences(context)
-    model = getattr(preferences, "geometry_model", DEFAULT_MOGE2_MODEL_KEY)
+    model = configured_geometry_model(context)
     return (
         model,
         int(getattr(preferences, "geometry_resolution_level", 5)),
@@ -196,7 +197,7 @@ class CutoutSelectionToShape(JobOperatorBase, bpy.types.Operator):
         options=_HIDDEN,
     )
     model: bpy.props.StringProperty(
-        default=DEFAULT_MOGE2_MODEL_KEY,
+        default=DEFAULT_GEOMETRY_MODEL_KEY,
         options=_HIDDEN,
     )
     resolution_level: bpy.props.IntProperty(