fix: resolve all ruff lint errors

feat: CI/CD, Langfuse tracing, drift monitor, startup checks, explicit scheme links

feat: rule-based refinery layer — structured scheme cards, clean output

README align

docs: final production README

docs: production README with architecture diagram and metadata fix

chore: exclude large data files from repo

feat: production UI complete, deployment ready

feat: state-aware retrieval, city-to-state mapping, profile parser improvements

feat: evaluation complete — relevancy 0.95, precision 0.86, overall 0.77

feat: FastAPI layer complete — /query endpoint working

feat: week 2 complete — LangGraph agent working end-to-end

feat: add agent node package and update gitignore

feat: ingestion pipeline complete — 3400 schemes, 27262 chunks

feat: ingestion pipeline complete — 3400 schemes, 27262 chunks

chore: initial project scaffold