"""Vendored subset of the ai-rag-chat-evaluator (`evaltools`) package.

Only the pieces this repo needs are included: the evaluation runner, its
metrics, service setup helpers, and the markdown summary/diff reviewers. The
synthetic-data generation module and the Textual TUI reviewers are omitted.

Upstream: https://github.com/Azure-Samples/ai-rag-chat-evaluator (MIT License,
Microsoft Corporation).
"""
