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## Summary `KGSearchRetrieval` composes entity search, type search, relation search, N-hop analysis, score fusion, LLM-based query\_rewrite, and community reports into a single synthetic chunk for KG-enhanced retrieval. ### Components | Component | Source | Status | |-----------|--------|--------| | Entity/relation/community search | Direct `DocEngine.Search` calls | ✅ | | N-hop analysis + score fusion | `common.AnalyzeNHopPaths` / `DoubleHitBoost` / `FuseRelationScores` | ✅ #15666 | | Query rewrite prompt + parser | `common.BuildQueryRewritePrompt` / `ParseQueryRewriteResponse` | ✅ #15669 | | Token budget | `common.BuildKGContent` + `NumTokensFromString` | ✅ #15666 | | LLM query rewrite integration | `queryRewrite` function with fallback | ✅ | ### Testing 11 tests (pure function + mock engine): ``` === RUN TestKgEntityFromChunk_Basic --- PASS === RUN TestKgEntityFromChunk_ScoreFallback --- PASS === RUN TestKgEntityFromChunk_MissingFields --- PASS === RUN TestKgRelationFromChunk_Basic --- PASS === RUN TestKgRelationFromChunk_MissingFrom --- PASS === RUN TestSearchKGTypeSamples_Success --- PASS === RUN TestSearchKGTypeSamples_Empty --- PASS === RUN TestKGSearchRetrieval_Basic --- PASS === RUN TestKGSearchRetrieval_NoEntities --- PASS === RUN TestQueryRewrite_Fallback --- PASS === RUN TestQueryRewrite_EmptyQuestion --- PASS ``` --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>