Hybrid Retrieval Magic: Fixing RAG Pipeline Failures in Cloud Searches

In my last post, I built a RAG pipeline from scratch — no LangChain, just FastAPI + FAISS. It scored 17/19 on my test set. But two questions failed: "Who is the CEO?" — couldn't find it "How many employees does Zentara have?" — couldn't find it Both answers were right there on page 1. So what went w