# Brief: rag-eval-hybrid-baseline

## Background

Offline RAG eval (golden × fixture × key-field baseline) existed but generator/docs still used dead `retrieval.vector-store.mode=spring`. Fixtures lacked search meta and did not reflect hybrid main path.

## Goals (knife-1 only)

- Snapshot generation uses `retrieval.search.mode` (default hybrid; dense override).
- Fixtures record `searchMode` / `kbScope`.
- README documents hybrid-era offline vs live loop.
- Best-effort live seed + regenerate fixtures + update baseline.

## Non-goals

Dense/hybrid dual fixture trees; golden mustNot/chunk/level hard gates; new eval frameworks.