Semantic Retrieval Engine
RAG retrieval shipped as reusable MCP infrastructure — index a corpus once, query it from any AI client.
- recall@5 ≥ 0.90 (CI-gated)
- 2 storage backends, 1 test battery
- runs keyless or scales to Postgres
Hybrid vector + BM25 fused with Reciprocal Rank Fusion; interchangeable SQLite / Postgres+pgvector stores; pluggable OpenAI or keyless embeddings; a recall@k eval harness gates CI.