"""Knowledge base (RAG, #60): clinical guidelines -> citable chunks -> BM25 retrieval -> grounded answers.

    from app.llm.rag import answer, retrieve
    hits = retrieve("синдром отмены антидепрессантов", audience="doctor")
    reply = await answer(scrub(text), audience="patient")   # None -> rag.fallback_text()

Corpus and parameters: `config/rag/sources.yaml`; PDF sources and the converter: `docs/source/rag/`.
"""

from app.llm.rag.corpus import Chunk, load_chunks
from app.llm.rag.index import Hit, get_index, retrieve
from app.llm.rag.qa import Citation, RagAnswer, answer, fallback_text

__all__ = [
    "Chunk",
    "Citation",
    "Hit",
    "RagAnswer",
    "answer",
    "fallback_text",
    "get_index",
    "load_chunks",
    "retrieve",
]