Module search 

Hybrid search engine: BM25 + vector similarity + Reciprocal Rank Fusion.

Structs

Bm25Hit

A BM25 search hit from FTS5.

SearchOmissionReceipt

SEM-001: Receipt for rows skipped during degraded search.

VectorHit

A vector search hit.

VectorSearchOutcome

Enums

SearchCorruptionPolicy

SEM-001: Search corruption policy — strict or degraded.

Functions

brute_force_vector_outcome

cosine_similarity

Compute cosine similarity between two vectors.

deduplicate_results

Deduplicate results by (source_type, source_id), keeping the first occurrence.

fts_only_search

Full-text search only (no embeddings needed). Synchronous.

hybrid_search

Perform a hybrid search (BM25 + vector + RRF).

hybrid_search_explained

Perform a hybrid search and return the exact score decomposition.

hybrid_search_explained_with_hnsw

Perform a hybrid HNSW-backed search and return the exact score decomposition.

hybrid_search_with_hnsw

Perform a hybrid search using pre-computed HNSW hits for the vector component.

per_dim_vector_outcome

rrf_fuse

Fuse BM25 and vector results via Reciprocal Rank Fusion.

rrf_fuse_with_context

sanitize_fts_query

Sanitize a raw query string for safe use in an FTS5 MATCH expression.

source_dedup_key

vector_only_search

Vector-only search. Called after embedding the query.

vector_only_search_with_hnsw

Vector-only search using pre-computed HNSW hits.