After the WebLLM → transformers.js migration, the first attempt to load
Gemma 4 E2B in /llm-test was blocked by CSP at the *weight shard*
download step (tokenizer.json got through fine — it lives on
huggingface.co directly). HF has rolled out a new XET-backed CDN for
large model files at cas-bridge.xethub.hf.co, served from
*.xethub.hf.co (the parent zone is hf.co, NOT huggingface.co — so our
existing wildcard `*.huggingface.co` did not cover it).
Open the broader hf.co wildcard (`https://*.hf.co`) so future XET host
rotations don't bite us, plus the explicit cas-bridge.xethub.hf.co
entry for older CSP-strict browsers that want narrower matches first.
The legacy huggingface.co + cdn-lfs.huggingface.co entries stay in place
for repo metadata and any model still on the old LFS path.
Update the comment block above the CSP additions to reflect that the
package now uses transformers.js + ONNX shards rather than the old
WebLLM/MLC path, including a quick map of which HF domain serves what.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
0af9094096