Both search tools pass their results through HaikuRAG.expand_context, as
every other consumer of search results already did, so a client reads
the hit in its section rather than the chunk that matched. The rendering
gains an opt-in include_chunk_meta that shows the metadata stored with
the matched chunk beyond haiku.rag's structural keys, labelled as the
matched chunk's because an expanded passage spans several chunks and
only the anchor's metadata survives expansion. The capabilities' rendering
is unchanged.
Refs #599
2582f2c05a