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The FactRetriever's _fts_candidates passed the raw query string directly to FTS5's MATCH operator. FTS5 defaults to AND-between-tokens, which means any multi-word prose query like 'what happened with the deployment rollback' required every single token to co-occur in a fact — dropping recall to zero on the kind of queries agents actually issue via prefetch(). Fix: add _sanitize_fts_query() that: - tokenizes the query and drops English stopwords - strips FTS5 operator characters per token - OR-joins the remaining content tokens as phrase literals For pathological inputs (all stopwords, empty), falls back to the raw query so the caller sees zero results instead of a SQL error. This is a pure-retrieval-quality fix — the HRR + Jaccard reranking stages still keep precision high. Ships with 10 tests covering the sanitizer and retrieval integration. |
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| byterover | ||
| hindsight | ||
| holographic | ||
| honcho | ||
| mem0 | ||
| openviking | ||
| retaindb | ||
| supermemory | ||
| __init__.py | ||