Fix: Support HF_HOME and HF_ENDPOINT

[DayNice]

Change Api::new() into ApiBuilder::from_env().build(). This fixes cases not handled in PR #179.

You can see in the source code that Api::new() is simply a call to ApiBuilder::new().build(). To opt-in for supporting environment variables HF_HUB and HF_ENDPOINT, we must explicitly use ApiBuilder::from_env().build() for all API calls.

Affected files are as follows:

• rust/src/
  • embeddings/local/
  • clip.rs: L206
  • colbert.rs: L55
  • colpali.rs: L46
  • colpali_ort.rs: L34
  • colsmol.rs: L24
  • ort_bert.rs: L65, L421
  • ort_colsmol.rs: L37
  • ort_jina.rs: L66
  • file_processor/audio/audio_processor.rs: L461
  • models/idefics3/
    • array_processing.rs: L68, L704
    • tensor_processing.rs: L506, L528
  • reranker/model.rs: L44

Tested that it works as follows.

export HF_HOME=/tmp/hf_home

hf cache scan
# Cache directory not found: /tmp/hf_home/hub

# trigger local caching
python -c 'from embed_anything import Reranker, Dtype; Reranker.from_pretrained("zhiqing/Qwen3-Reranker-0.6B-ONNX", dtype=Dtype.F32)'

hf cache scan
# REPO ID                          REPO TYPE SIZE ON DISK NB FILES LAST_ACCESSED     LAST_MODIFIED     REFS LOCAL PATH              
# -------------------------------- --------- ------------ -------- ----------------- ----------------- ---- ----------------------------------------------------------
# zhiqing/Qwen3-Reranker-0.6B-ONNX model             1.2G        4 a few seconds ago a few seconds ago main /tmp/hf_home/hub/models--zhiqing--Qwen3-Reranker-0.6B-ONNX
# 
# Done in 0.0s. Scanned 1 repo(s) for a total of 1.2G.

[sonam-pankaj95]

Thank you @DayNice for your contributions!! I will soon review the others.