Show HN: Omneum – Local, text-blind context control plane for AI agents

Omneum is an open-source context control plane that sits between retrieval and generation, using provenance-aware graph inference to estimate source reliability and dependency-adjusted claim support, then selecting original passages under a token budget. It runs locally by default, persisting observations in SQLite or PostgreSQL, and evaluates structured observations without reading source text or calling an LLM judge. The project reports precision gains of 3.02–8.44 percentage points and 14.46–18.51% lower reconstructed-context token usage across BM25, MiniLM, BGE Reranker v2-m3, and Cohere Rerank v4.0 Pro integrations.