I'm disappointed that ChromaDB's local, free "single node" version is still getting second-class, hand-me-down features while the "distributed" version (a SaaS offering, unsurprisingly) gets built in hybrid search, BM25, etc. I tried to give the benefit of the doubt and wait, but half a year later there's not even an announcement or discussion of feature parity on the roadmap. What are some truly open source, on-premises alternatives well suited to semantically searching a...