Add new tests and functionality for image processing and geometry handling

- Introduced color_image.py for preparing standalone color images for tests.
- Added hdr_image.py to create HDR textures for testing.
- Implemented test_image_depth_panorama.py to evaluate panorama topology, UVs, and depth discontinuities.
- Created test_shadeless.py to validate the opacity and HDR color endpoints of the Shadeless group.
- Developed moge3_export.py for exporting dynamic MoGe-3 backbone and ONNX graphs.
- Added material.py to inherit material slots onto generated geometry.
- Built image_depth_panorama.py to construct a quad panorama with depth separation and sampling.

src/anyimage/server/model_catalog.py

@@ -178,10 +178,28 @@ MOGE2_MODELS = {
         ),),
     ),
 }
+MOGE3_VITL = ModelSpec(
+    key="MOGE3_VITL",
+    label="MoGe-3 ViT-L",
+    directory_name="moge-3-vitl-onnx",
+    repository="Ruicheng/moge-3-vitl",
+    license_name="MIT",
+    description="MoGe-3 geometry with three refinement steps using ONNX Runtime",
+    download_patterns=("backbone.onnx", "refiner.onnx"),
+    ready_patterns=("backbone.onnx", "refiner.onnx"),
+    r2_directory="moge-3-vitl-onnx",
+    r2_files=(
+        ("backbone.onnx", 1324190318, "f21246c6921373c8c79ecdb8c78818a79bd2506c2fb88f4d4cdec21b92f725e3"),
+        ("refiner.onnx", 157729628, "67ad7297aba18f8ef7939e8f700a5b25c41a19ddb68656bc2cd08b54c248fe2a"),
+    ),
+)
+
+MOGE_MODELS = {**MOGE2_MODELS, MOGE3_VITL.key: MOGE3_VITL}
+
 DOWNLOADABLE_MODELS = {
     BEN2_MODEL.key: BEN2_MODEL,
     **UPSCALE_MODELS,
-    **MOGE2_MODELS,
+    **MOGE_MODELS,
 }
 
 
@@ -200,8 +218,8 @@ def model_record(model, ready=False):
         "description": model.description,
         "license": model.license_name,
         "family": (
-            "moge2"
-            if model.key.startswith("MOGE2_")
+            "moge"
+            if model.key in MOGE_MODELS
             else "ben2"
             if model.key == BEN2_MODEL.key
             else "upscale"