Building FoJin (https://fojin.app) — an open-source platform that
  aggregates Buddhist digital texts from 440+ global sources (CBETA,
  SuttaCentral, BDRC, SAT, 84000, GRETIL, etc.) into one searchable
  interface.

  Stack: React + TypeScript, FastAPI, PostgreSQL with pgvector,
  Elasticsearch 8 (ICU analysis for CJK), Redis. Features include a
  knowledge graph (9,600+ entities), 237K dictionary entries, full-text
  reading of 4,488 fascicles, and RAG-powered AI Q&A grounded in 11M
  characters of canonical text.

  GitHub: https://github.com/xr843/fojin