test limit_k=6

app/api/rag_routes.py

@@ -194,7 +194,6 @@ async def chat(request: ChatRequest, background_tasks: BackgroundTasks):
 
         retriever = get_chain(
             top_k=request.similarity_top_k,
-            limit_k=request.limit_k,
             similarity_metric=request.similarity_metric,
             similarity_threshold=request.similarity_threshold
         )