josix/agentic-retrieval

Six retrieval strategies compared offline-first: contextual lexical retrieval (TF-IDF/BM25/RRF fusion), its LLM-enriched lexical+ctx variant, turbovec (dense ANN), pi-serini (Lucene BM25 via Pyserini), hybrid (lexical + dense fused with RRF), and tree-sitter (AST-boundary chunking with enclosing scope context)