Clean up dead code and add startup model loading

Add data/tag_utils.py required by refnet.modules.embedder

Add refnet/models and ldm/models source files previously excluded by .gitignore

Fix .gitignore and add missing refnet/models/__init__.py

Add @spaces.GPU decorator to inference function for ZeroGPU

Remove torch/torchvision: use ZeroGPU pre-installed version

Pin torch==2.8.0 and torchvision==0.23.0 (known working versions)

Restore torch/torchvision without version pin

Remove torch/torchvision from requirements to avoid ZeroGPU conflicts

Pass HF_TOKEN explicitly to list_repo_files and hf_hub_download

Trigger Space rebuild after HF_TOKEN secret added

Add HF_TOKEN auth for private model repo access

Fix IndexError when model list is empty at startup

Fix gradio version, model repo, and remove rmbg-v2

Fix Space startup: defer model loading, fix sdk_version

Fix huggingface_hub version incompatibility with gradio

Add README.md for HuggingFace Space and requirements.txt

initialize huggingface space demo