I find it difficult locate the core search features ... please correct me if I'm mistaken, but it appears that the search feature is a wrapper built on top of Qdrant ?
I think "wrapper" is a bit of a reductive term, but we do use Qdrant for indexing and search. There are a lot features we implement client-side though like the ingestion-microservice, relevancy weighting, hybrid with cross-encoder, date-recency biasing, etc.