b127cafb01
Two minimal additions for the upcoming v0.1.11 client work:
- /kb/search hits now include chunk_index, so the client can call
/source/{id}/chunks?around=N&ctx=K to fetch the matched chunk plus K
chunks before/after as context. Required by the new search-preview
layout for text sources, which until now duplicated the matched chunk
in both panes.
- /source/{id}/chunks accepts around (chunk_index) + ctx (window radius
clamped to 0..10). When around is given, returns only the windowed
range; otherwise unchanged (returns all chunks of the source).
Refs Task Master #1