Add bgfilter/weights.py: resolve_model_source() maps a HuggingFace repo id
to a local folder under the weights dir (models/ by default, override with
BGFILTER_WEIGHTS_DIR) when one named after the repo basename exists; otherwise
the repo id is returned unchanged. Opt-in and backward compatible.
- vitmatte_infer.py / segmentation.py resolve model_name through it; anime-seg
reads <dir>/isnetis.onnx directly instead of hf_hub_download when local.
- .gitignore: models/, model-cache/
- README: document bundling weights as plain project folders.
Verified: anime-seg loads from a local models/anime-seg/ folder offline.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
