- Engine: stato SQLite, state machine, 10 approved tools, parser azioni - LLM: multi-provider (Ollama/OpenRouter/Local), system prompt DCC - DM cycle: LLM decide tool → engine esegue → narrazione + meccanica - Dati avventura: JSON machine-readable con 9 aree, mostri, enigmi, quest - Web: FastAPI + WebSocket backend, SPA frontend dark fantasy - Ref: architecture-patterns/neon-scratch-lounge (separazione reasoning/execution)