total_chunks is the full index size (post-exclusion filtering), useful
for sanity-checking that the agent's build-embeddings actually ran on
the expected corpus.
v3.1.0 — present + true when retrieval used the agent-supplied
hypothetical_answer as the embedding seed (HyDE). Lets clients
audit whether they're seeing raw-query or HyDE-augmented results.
Envelope returned by embeddingsSearch.
total_chunksis the full index size (post-exclusion filtering), useful for sanity-checking that the agent'sbuild-embeddingsactually ran on the expected corpus.