The HTTP handler now emits a tracing::warn on load_model failures with
the expanded anyhow chain (format!("{e:#}")) before returning the 400.
journalctl -u neuron will surface the underlying hf-hub /
materialisation error without needing to capture the curl response
body separately.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>