Replace direct mutation of the global EMBEDDING_MODEL with patch.object on _get_embedding_model, eliminating shared state that caused flakiness under pytest-xdist parallel execution. Fixes #454 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Kimi Agent <kimi@timmy.local> Co-committed-by: Kimi Agent <kimi@timmy.local>