Add ONNX model inference implementations for MoGe-2, BEN2, and DA3

- Introduced `onnx_moge2.py` for MoGe-2 ONNX inference with NumPy post-processing.
- Added `onnx_ben2.py` for BEN2 ONNX inference with Pillow and NumPy preprocessing.
- Created `onnx_da3.py` for Depth Anything 3 inference with ONNX Runtime and NumPy.
- Implemented shared ONNX Runtime session helpers in `onnx_runtime.py`.
- Developed unit tests for server functionalities in `test_server.py`, including model caching and job management.
- Enhanced job server to handle frame extraction without requiring models.

src/snapform/preferences.py

@@ -1,8 +1,7 @@
-from pathlib import Path
-
 import bpy
 
-from .client import device_enum_items
+from .job_runtime import DEFAULT_STORAGE_ROOT, runtime
+from .properties import device_enum_items
 
 
 class SnapFormPreferences(bpy.types.AddonPreferences):
@@ -15,7 +14,7 @@ class SnapFormPreferences(bpy.types.AddonPreferences):
             "all Blender versions can use the same directory"
         ),
         subtype="DIR_PATH",
-        default=str(Path.home() / ".snapform"),
+        default=str(DEFAULT_STORAGE_ROOT),
     )
     device: bpy.props.EnumProperty(
         name="Device",
@@ -28,19 +27,16 @@ class SnapFormPreferences(bpy.types.AddonPreferences):
     )
 
     def draw(self, _context):
-        from .operators import active_job
-        from .client import venv_directory, env_installed
-
         layout = self.layout
         layout.prop(self, "storage_root")
         layout.prop(self, "device")
         layout.separator()
-        layout.label(text=f"Environment: {venv_directory()}")
-        if env_installed():
+        layout.label(text=f"Environment: {runtime.environment_directory()}")
+        if runtime.environment_ready():
             layout.label(text="Environment is installed", icon="CHECKMARK")
         else:
             install_row = layout.row()
-            install_row.enabled = active_job() is None
+            install_row.enabled = runtime.active_job is None
             install_row.operator(
                 "snapform.install_environment",
                 text="Install Environment",
@@ -48,8 +44,7 @@ class SnapFormPreferences(bpy.types.AddonPreferences):
             )
         layout.separator()
         operator = layout.operator(
-            "snapform.control_service",
-            text="Open Service Log",
+            "snapform.open_server_log",
+            text="Open Server Log",
             icon="TEXT",
         )
-        operator.action = "LOG"