Update src/qa.py

src/qa.py

@@ -87,7 +87,7 @@ def _hash_name(file_name: str, chunk_size: int, overlap: int, num_chunks: int):
     combo = f"{file_name}_{chunk_size}_{overlap}_{num_chunks}"
     return hashlib.md5(combo.encode()).hexdigest()[:8]
 
-def _clean_old_caches(base_name: str, keep_latest: int = 3):
+def _clean_old_caches(base_name: str, keep_latest: int = 5):
     """
     Retains only the latest few embedding cache files for a given document.
     Prevents /tmp from filling with redundant embeddings.