What is a non-opaque embedding? Does VectorVFS do retrieval, or store embeddings in EXT4? Is retrieval logic obscured by VectorVFS? If VectorVFS did retrieva

What is a non-opaque embedding? Does VectorVFS do retrieval, or store embeddings in EXT4? Is retrieval logic obscured by VectorVFS? If VectorVFS did retrieval with non-opaque embeddings, how would one debug why a file surfaced?