Show HN: Mnemo – local-first AI memory layer for any LLM (Rust, SQLite,petgraph) (github.com) AI

Mnemo is an open-source “local-first” AI memory layer for LLM apps, implemented in Rust with a persistent knowledge graph in SQLite and semantic retrieval via an in-memory petgraph. It runs as a sidecar service that ingests conversation text, uses an LLM for entity/relationship extraction, stores and deduplicates entities across sessions, and then retrieves scored, graph-expanded context to inject into future prompts (with options to use Ollama, OpenAI, Anthropic, or any OpenAI-compatible backend). The GitHub repo also describes REST endpoints, configuration, and performance targets, emphasizing no cloud dependency and no Python runtime.