add some env in ci

packages/leann-core/src/leann/__init__.py

@@ -8,6 +8,10 @@ if platform.system() == "Darwin":
     os.environ["MKL_NUM_THREADS"] = "1"
     os.environ["KMP_DUPLICATE_LIB_OK"] = "TRUE"
     os.environ["KMP_BLOCKTIME"] = "0"
+    # Additional fixes for PyTorch/sentence-transformers on macOS ARM64 only in CI
+    if os.environ.get("CI") == "true":
+        os.environ["PYTORCH_ENABLE_MPS_FALLBACK"] = "0"
+        os.environ["TOKENIZERS_PARALLELISM"] = "false"
 
 from .api import LeannBuilder, LeannChat, LeannSearcher
 from .registry import BACKEND_REGISTRY, autodiscover_backends

packages/leann-core/src/leann/api.py

@@ -23,6 +23,11 @@ from .registry import BACKEND_REGISTRY
 logger = logging.getLogger(__name__)
 
 
+def get_registered_backends() -> list[str]:
+    """Get list of registered backend names."""
+    return list(BACKEND_REGISTRY.keys())
+
+
 def compute_embeddings(
     chunks: list[str],
     model_name: str,