LLM agent brain for Rustok.
- Intent parsing: natural language → structured actions
- Tool registry: selecting which core functions to call
- Memory: short-term (dialog) + long-term (user preferences)
- Dialog manager: states, confirmations, clarifications
- Risk explainer: translating txguard verdicts into human language
TBD — Rust (Rig) or Python (FastAPI + LangChain) after architecture decision.