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Alex
ccd8eb612f
Three faults in the graph tool, all on the agent's path: The store was cached on the tool, and the executor caches the tool for the whole agent run -- so one pgvector pooled connection stayed checked out across every LLM round trip of that run, minutes at a time, and enough concurrent runs exhaust the pool. GraphRAGRetriever releases its store before falling back for this reason. The tool now releases it at the end of each action. It gated on GRAPHRAG_ENABLED where everything else asks graphrag_available(), which also requires the pgvector store. Under any other vector store the graph tables are not the ones the sources were ingested into, but the tool was still offered and still queried Postgres. Pages were labelled by hand rather than through labels_from_metadata, which exists so citation labels match across retrievers. A page read by the tool and the same chunk retrieved by internal_search are one document, and citations key on (source, title) -- so the research agent gave that document two citation numbers. The recorded doc also keeps the full chunk text now, so it dedupes against the retriever's copy; only what the model reads is truncated.