https://muskanagarwal.dev/articles/ Engineering writing by Muskan Agarwal: AI agents, RAG systems, Angular performance, and honest build logs. en-us https://muskanagarwal.dev/articles/building-clauselens-rag/ https://muskanagarwal.dev/articles/building-clauselens-rag/ Wed, 15 Jul 2026 00:00:00 GMT Build log for ClauseLens, a hybrid-retrieval RAG pipeline for contracts: structural chunking, BM25 + dense fusion with RRF, citation validation, and the three real bugs the benchmark caught.