"""Retrieval — ground tax answers in the regulation corpus (local, no cloud API).

A small on-disk TF-IDF index over dated SAT / IRS source text. The "cite or abstain"
guardrail lives in ``Retriever.cite``: if retrieval does not support a claim above a
similarity threshold, the agent abstains and recommends a human CPA rather than
free-styling tax law.
"""

from .corpus import Document, load_corpus
from .index import CiteResult, Passage, Retriever, tokenize

__all__ = [
    "Document",
    "load_corpus",
    "Retriever",
    "Passage",
    "CiteResult",
    "tokenize",
]