fix(build): disable HF_HUB_ENABLE_HF_TRANSFER to avoid hf_transfer requirement

Dockerfile

@@ -11,10 +11,11 @@ COPY app.py /app/app.py
 COPY model_handler.py /app/model_handler.py
 
 ARG HF_MODEL_REPO=Jaja-09/authorcheck-model
-ENV HF_HUB_ENABLE_HF_TRANSFER=1
 
-RUN python -c "from huggingface_hub import snapshot_download; snapshot_download(repo_id='${HF_MODEL_REPO}', local_dir='/app/model', local_dir_use_symlinks=False)"
+# Download model snapshot from HF model repo
+RUN python -c "from huggingface_hub import snapshot_download; snapshot_download(repo_id='${HF_MODEL_REPO}', local_dir='/app/model')"
 
+# Ensure NLTK tokenizer data is present
 RUN python -c "import nltk; nltk.download('punkt', quiet=True)"
 
 EXPOSE 7860