hf_hub_download(local_files_only=True) intermittently failed to locate the
cached sparse_linear.pt inside the engine process, so _is_bge_m3 returned
False and bge-m3 silently degraded to the dense-only sentence-transformers
path. _resolve_repo_file now falls back through try_to_load_from_cache and a
direct filesystem glob of the HF cache (models--org--name/snapshots/*/file),
which resolves reliably regardless of process context. Detection keys off the
sparse head file rather than the model_type string. (Debug scaffolding removed.)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Mw2KQiswmD69T45fTfjKwW