Add Backend enum

src/vector_search_mcp/engine/base_engine.py

@@ -30,7 +30,7 @@ class BaseEngine(ABC, Generic[ResponseType, ConditionType]):
 
     async def semantic_search(
         self,
-        vector: list[float],
+        embedding: list[float],
         collection: str,
         limit: int = 10,
         conditions: list[Condition] | None = None,
@@ -38,6 +38,6 @@ class BaseEngine(ABC, Generic[ResponseType, ConditionType]):
     ) -> list[SearchRow]:
         transformed_conditions = self.transform_conditions(conditions)
         response = await self.run_similarity_query(
-            vector, collection, limit, transformed_conditions, threshold
+            embedding, collection, limit, transformed_conditions, threshold
         )
         return self.transform_response(response)