Module fusion 

Multi-source result fusion.

Implements Reciprocal Rank Fusion (RRF) to combine results from text search and semantic search into a unified ranked list.

Formula: score = sum(1 / (k + rank_i)) where k defaults to 60.

Structs

FusedResult

Fused search result combining scores from multiple sources.

Functions

fuse_ast_only

Fuse only AST pattern search results.

fuse_semantic_only

Fuse only semantic results (used when text search is not applicable).

fuse_text_only

Fuse only text results (used when semantic search is not applicable).

rrf_fuse

Perform Reciprocal Rank Fusion (RRF) on multiple result lists.

rrf_fuse_three

Perform three-way RRF fusion across text, semantic, and AST results.