Add vLLM-Omni library info to Hugging Face Hub requests (#5381)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

vllm_omni/model_executor/model_loader/weight_utils.py

@@ -1,3 +1,6 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM-Omni project
+
 import os
 import time
 from pathlib import Path
@@ -10,7 +13,11 @@ from vllm.model_executor.model_loader.weight_utils import DisabledTqdm, get_lock
 if envs.VLLM_USE_MODELSCOPE:
     from modelscope.hub.snapshot_download import snapshot_download
 else:
-    from huggingface_hub import snapshot_download
+    from vllm_omni.transformers_utils.repo_utils import hf_api
+
+    def snapshot_download(*args, **kwargs):
+        return hf_api().snapshot_download(*args, **kwargs)
+
 
 logger = init_logger(__name__)