Module query 

Hybrid query — combines semantic search, graph expansion, and episode search.

Pipeline:

1. Semantic phase: HNSW KNN with limit * 2 to gather candidates
2. Graph phase: 1-hop expansion from top-N results, scored as parent_score * 0.5
3. Merge + deduplicate by entity ID, keeping highest score
4. Episode search (optional) — separate KNN on episodes

Functions

pipeline_entities

Get all pipeline entities for a given stage, optionally filtered by status.

pipeline_flow

Trace the lineage of a pipeline entity through relationship chains.

pipeline_stats

Get pipeline stats: counts by (stage, status), stale entities.

query

Run a hybrid query: semantic search + graph expansion + optional episode search.